Report on the zoological collections made in the Indo-Pacific Ocean ...

CRT7STACEA. 247although the beaded row of granules on the upper margin of themobile finger is much less distinctly marked than in the specimenfigured by De Haan.Several species of this genus have been described agreeing withS. hidens in the bideutate lateral margins of the carapace, and inhaving two small oblique pectinated ridges on the upper surface ofthe palm. Of these, I regard S. lividum and S. guttatum, A. M.-Edwards *, as very doubtfully distinct.S. dussumieri, M.-Edwards f, from Bombay, is very briefly characterized;but as the words " pouce subcrenele " occur in the description,it may be that our specimens belong to it.There are specimens that I refer, at least provisionally, to thisspecies in the collection of the Museum from the Philippine Islands(Cuming, Ve itch), Koo-Kcang-iian {H.M.S. 'Samcarmg'), MalaysianSeas without locality (Dr. P. Blecl-er), and New Hebrides (J. Macgillivray).This latter example does not differ appreciably from thefigure of S. lividum, A. M.-Edw., founded on a New-Caledonianexample (vide N. Arch. Mus. H. N. ix. p. 303, pi. xvi. fig 2, 1873).This, as M. de Man has shown, is a species ranging throughout theOriental region.There are, besides, in the collection two very small specimens ofa species of this genus belonging to the section having a carapacewith entire lateral margins, which I will not venture to determine.The larger, a female, is from Port Jackson (0-5 fms.), the smaller,a male, from Port Curtis. It cannot, I think, be identified withSesarma ergthrodactj/la, Hess, from Sydney J, in which the outerborder of the mobile finger is ribbed, and the inner provided withtwo larger and several smaller teeth, &:c.92. Pinnotheres villosulus.? Pinnotheres villosulus, Oiiemi-Meneville, Cr. in Voyage de la Coquille,Zool. ii. p, 13 (1830) ; Icon. E'egne Animal, Or. p. 7, pi. iv.tig. 6 (1829-44).? Piunotheres villosus, M.-Edwards, Ann. Sci. Nat. &6x. 3, Zool. xx.p. 218, pi. xi. fig. 8 (1853).A female in Dr. Coppinger's collection, obtained at Warrior Eeef,Torres Straits, agrees in nearly all particulars with M. Guerin'sdescription based on specimens from Timor, and the maxLUipede isalmost exactly of the form delineated by Milne-Edwards. Guerin,however, describes the front as emarginate, whereas in the specimenI have before me it is triangulate and deflexed. In the slight outlinesketch of the front and antennce in his Iconographie ' ' therostrum appears, however, to be triangulate and bent down betweenthe oblique autennules just as in Dr. Coppinger's specimen. I prefer,therefore, to refer the latter provisionally to Guerin-Mencville'sspecies rather than to incur the risk of adding needlessly to the* N. Arch. Mus. Hist. Nat. v. Bulletin, pp. 25, 26 (1869).t Ann. Sci. Nat. ser. 3, Zool. xx. p. 185 (1853).\ Archiv. Mus. Hist. Nat. p. 151, pi. vi. fig. 10 (1865).