20 DR. W. T. CALMAN ON A COLLECTION OF 



The reticulations on the carapace of our specimen are rather larger and more symmetri- 

 cally disposed than in Milne-Edwards's figure. 



Locality. " Murray Island." 



Distribution. Ceylon to Tahiti. 



Trapezia crMODOCE (Herbst). 



Trapezia cymuduce, Ortmaim, Zool. Jalirb. Syst. x. p. 203 (with synonymy) ; Alcock, Journ. Asiatic 

 Soc. Bengal, Ixvii. (2) p. 219 (1898). 



Three specimens are referable to this species as defined by Ortmann. The pubescence 

 on the outer surface of tlie chela is rather scanty and not conspicuous in dried specimens, 

 and the lower margin of the chela is faintly granular. The carpus, of the chelipeds bears 

 internally an acute spiniform tooth ; only in one detached cheliped is this tooth blunt 

 {of. De Man, Arch. Naturg. liii. (1) p. 310). 



Locality. " Murray Island, channels between reefs, 15-20 fath." 



Tetralia GiiABERUiMA (Herbst). 



Tetralia glaberrima. Ortmann, Zool. Jahrb. Syst. x. p. 209 (with synonymy); Alcock, Jouru. Asiatic 

 Soc. Bengal, Ixvii. (2) p. 223 (1898). 



Two specimens, one of which resembles tlie form named T. nigrifrons by Dana (U.S. 

 Expl. Exp., Crust, i. p. 262, pi. xvi. fig. 2). The dark marginal band extends across the 

 wdiole front edge of the carapace and halfway down the sides. 



Locality. " Reef, Wyer." 



Distribution. Red Sea to Marquesas. 



LissocARCiNrs ORBICULARIS, Dana. 



Lissocarcinus orbiadaris, Dana, U.S. Expl. Exp., Crust, i. p. 288, pi. xviii. figs. 1 a-e; A. Milne- 

 Edwards, Arch. Mus. Paris, x. p. 418 (1861) ; Alcock, Journ. Asiatic Soc. Bengal, Ixviii. (2) 

 p. 20 (1899). 



Six specimens presenting all the characters of Dana's species, but showing some slight 

 variation in the distinctness of the antero-lateral teeth and in the concavity of the 

 postero-lateral borders and consequent prominence of the lateral angles. 



Locality. " Murray Island, reef." 



Distribution. Mauritius to Fiji. 



Caphyra rotundiprons, a. Milne-Edwards. 



Camptonyx rotundifrom, A. Milne-Edwards, N. Arch. Mus. Paris, v. 1869, p. 156, pi. vii. figs. 11-12. 

 Cajihyra rotundifrons, A. Milne-Edwards, N. Arch. Mus. Paris, ix. 1873, p. 174. 



Two female specimens of this very rare species are in the collection. They agree very 

 exactly with Milne-Edwards's description and figure, the only observable differences 

 being that the frontal lobes are slightly more prominent in the middle and are separated 

 from the supra-orbital margin on either side by a shallow notch ; the anterior margin of 

 the merus of the chelipeds bears three teeth, and the merus of the second legs has no 



