CRUSTACEA. 



247 



although the beaded row of granules on the upper margin of the 

 mobile finger is much less distinctly marked than in the specimen 

 figured by De Haan. 



Several species of this genus have been described agreeing with 

 S. bidens in the bidentate lateral margins of the carapace, and in 

 having two small oblique pectinated ridges on the upper surface of 

 the palm. Of these, I regard S. lividum and S. guttatum, A. M.- 

 Edwards *, as very doubtfully distinct. 



S. dussumieri, M.-Edwards t, from Bombay, is very briefly cha- 

 racterized ; but as the words " pouce subcrenele " occur in the de- 

 scription, it may be that our specimens belong to it. 



There are specimens that I refer, at least provisionally, to this 

 species in the collection of the Museum from the Philippine Islands 

 (Cuming, Veitch), Koo-Keang-San (H.M.S. ' Samarang '), Malaysian 

 Seas without locality (Dr. P. Bleelcer), and New Hebrides (J. Macgil- 

 livray). This latter example does not differ appreciably from the 

 figure of 8. lividum, A. M.-Edw., founded on a New-Caledonian 

 example (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 the 

 Oriental region. 



There are, besides, in the collection two very small specimens of 

 a species of this geuus belonging to the section having a carapace 

 with entire lateral margins, which I will not venture to determine. 

 The larger, a female, is from Port Jackson (0-5 fins.), the smaller, 

 a male, from Port Curtis. It cannot, I think, be identified with 

 Sesarma eryihrodactyla, Hess, from Sydney zj:, in which the outer 

 border of the mobile finger is ribbed, and the inner provided with 

 two larger and several smaller teeth, &c. 



92. Pinnotheres villosulus. 



? Pinnotheres villosulus, Guerin-Meneville, Or. in Voyage de la Co- 

 guille, Zool. ii. p. 13 (1S30) ; Icon. R'egne Animal, Cr. p. 7, pi. iv. 

 fig. 6 (1829-44). 



? Pinnotheres villosus, M.-Edwards, Ann. Sci. Nat. ser. 3, Zool. xx. 

 p. 218, pi. xi. fig. 8 (1853). 



A female in Dr. Coppinger's collection, obtained at Warrior Reef, 

 Torres Straits, agrees in nearly all particulars with M. Guerin's 

 description based on specimens from Timor, and the maxillipede is 

 almost exactly of the form delineated by Milne-Edwards. Guerin, 

 however, describes the front as emarginate, whereas in the specimen 

 I have before me it is triangulate and deflexed. In the slight out- 

 line sketch of the front and antennae in his ' Iconographie ' the 

 rostrum appears, however, to be triangulate and bent down between 

 the oblique antennules just as in Dr. Coppinger's specimen. I prefer, 

 therefore, to refer the latter provisionally to Guerin-Meneville's 

 species 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). 



J Arclriv. Mus. Hist. Nat. p. 151, pi. vi. fig. 10 (1865). 



