406 'SIR. J. E. IIEXDERSON — A CONTRIBUTION 



The largest specimen, a female, is covered by a sponge ; its carapace is 19'5 mm. long 

 and 19 mm. in breadth. 



Distribution. V\.q(\. ^ea, {Bi'q^pell) ; Moziimhique (IlllgeiidorJ) ; Mevgai {De Man). 



196. Dromidia atjstraliensis (Haswell). 



D. australiensis (Haswell), De Man, Brock's Crust, p. 396, Taf. xvii. fig. 6 (1888). 



Silavaturai Par, three mal(\s {Thurston). 



These certainly belong to the species as figured and described by De Man. One 

 specimen is covered by a sponge ; the largest is only 9 mm. long. 

 Distribution. E. Australia [Ilasioell) ; Amboina {De 31aii). 



Genus Cryptodkomia, Stimpson. 



197. Cryptodromia pentagonalis, Hilgeudorf. 



C. pentagonaUs, Hilgendorf, Mouatsb. Ak. Wissensch. Berlin, p. 814, Taf. ii. figs. 1, 2 (1878). 

 Muttuwartu Par, four specimens (one covered by a sponge) ; Silavaturai Par, two 



specimens {Thurston). 



I refer these with some uncertainty to this species, as the antero-lateral margin of 

 the carapace is scarcely so long as represented by Hilgendorf ; otherwise they agree 

 well with it, and are identical with specimens from Mauritius named G. pentagonaUs 

 in the British Museum. The Silavaturai examples have a rudimentary tooth or almost 

 an indentation on the lateral margin of the caraj)ace, between the antero-lateral angle 

 and the tootli which marks the cervical groove. A trace of this may also be seen in the 

 Muttuwartu examples, but it is not represented by Hilgendorf. A more prominent 

 tooth is seen in the same 2)Osition in C. tomentosa. Heller (= C. canaliculata, Stm., fide 

 De Man), and as the latter species otherwise resembles C. pentagonaUs perhaps the two 

 are not distinct. 



Distrilmtion. I1)o, E. Africa {Hilgendorf) ; Mauritius {Brit. 2Ius.). 



Genus Dromia, Eabr. 



198. Dromia RrMPHii, Eabr. 



D. RumjjJdi (Fabr.), De Haaii, Crust. Japon. p. 107, tab. xx\ii. (1850). 



Ceylon {Haly). 



Distribution. Red Sea, E. Africa, Mauritius, Malay Archipelago, Japan. 



Genus Pseudodbomia, Stimpson. 



199. PsEUDODROMiA INTEGRIFRONS, Henderson. (PL XXXVIII. figs. 7-9.) 

 P. integrij'runs, Henderson, ' Challenger ' Anomura, p. 16, footnote (1888). 



Tuticorin, two females with ova {Thurston). 



The carapace is smooth and polished, very sparingly pubescent, and regularly convex, 

 l)otb from side to side and from end to end. The surface is a little uneven, and the 

 branchio-cardiac and cervical grooves are well marked, the latter iudenting the lateral 



