Syntype series of S. laevis Caullery, 944 consists of two different species based
Syntype series of S. laevis Caullery, 944 consists of two different species according to their ventrocaudal shields: three syntypes have an hirsute integument with abundant sediment particles firmly attached, as well as the shield basal layer is soft, porous, and one more one particular features a shield using a stiff basal layer. So as to redefine the species delineation due to the fact these two shield patterns differ PubMed ID:https://www.ncbi.nlm.nih.gov/pubmed/11836068 a lectotype has been chosen (ICZN 999, Art. 74.), the term has been purchase NS 018 hydrochloride introduced in the supplies section and inside the description (ICZN 999, Art. 74.7.), described and illustrated (ICZN 999, Art. 74.7.two) plus the two other specimens are regarded as paralectotypes (ICZN 999, Recomm. 74F). This proposal has been made to restrict the use of this species name to these specimens obtaining hirsute shields with abundant, firmly attached sediment particles (ICZN 999, Art. 74.7.3). The chosen specimen (lectotype) corresponds for the originally illustrated specimen (ICZN 999, Recomm. 74B). A further syntype 
of S. laevis (ZMA 49) is damaged, most physique papillae had been eroded, most shield fascicles chaetae had been broken, its introvert is invaginated, and itsKelly Sendall Sergio I. SalazarVallejo ZooKeys 286: four (203)papillae are arranged in transverse groups; the shield has a stiff layer, with concentric lines and ribs, showing a banded pigmentation. It resembles S. spinosa and doesn’t belong to P. laevis. On the other hand, from the ten syntypes of S. laevis var. minor, five (ZMA 528), are extremely modest specimens possibly of C. laevis, but their modest size complicates their positive identification; the other five syntypes (ZMA 504), are driedout, and their identification is even more problematic. Consequently, S. laevis var. minor have to be regarded as indeterminable. Caulleryaspis laevis (Caullery, 944) comb. n. differs in two major characters from C. gudmundssoni sp. n.: the relative improvement of your anterior shield depression as well as the relative improvement of peg chaetae. In P. laevis the anterior depression is shallow and peg chaetae are usually not properly developed, producing them difficult to be detected, whereas in P. gudmundssoni the anterior depression is deep and peg chaetae are very robust, getting conveniently noticed from the surrounding shield surface. Distribution. Andaman Sea to Southeastern Australia, 3947 m depth. Kastoro et al. (989) consider this is an extremely common estuarine species in East Java, in 0.30.0 m, and salinities of 29.34.0 . Genus Petersenaspis gen. n. urn:lsid:zoobank.org:act:7AEC3E5B68D457AAD7508A956F5B736 http:speciesid.netwikiPetersenaspis Sort species. Sternaspis capillata Nonato, 966. Diagnosis. Sternaspids with introvert hooks subdistally expanded. Preshield area with 8 segments. Ventrocaudal shield stiff with feebly created ribs, and no concentric lines. Remarks. Petersenaspis gen. n. and Sternaspis have stiff shields, whereas Caulleryaspis has soft shields. Even so, Petersenaspis differs from Sternaspis for the reason that its introvert hooks are subistally expanded, you can find 8 segments inside the preshield area, and the shield has deeply created ribs but no concentric lines, whereas in Sternaspis introvert hooks are tapered, you will find 7 segments within the preshield area, plus the shield has properly developed ribs, typically with concentric lines. As stated above, Petersenaspis gen. n. contains, besides the type species, P. capillata (Nonato, 966) comb. n from Central and Southern Brazil, P. palpallatoci sp. n. in the Philippine Islands, and a further species which is characterized bel.