tOG ME. J. R. HENDERSON — 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. Red Sea (Rilppell) ; Mozambique (Hilgendorf) ; Mergui (De Man). 



196. Dromidia australiensis (Haswell). 



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



Silavaturai Par, three males (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 (Haswell) ; Amboina (De Man). 



Genus Cryptodromia, Stimpson. 



197. Cryptodromia pentagonalis, Hilgendorf. 



ft pentagonalis, Hilgendorf, Monatsb. 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 C. pentagonalis 

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

 an indentation on the lateral margin of the carapace, between the antero-lateral angle 

 and the tooth 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 position in C. tomentosa, Heller (= C. canaliculata, Stm., fide 

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

 are not distinct. 



Distribution. Ibo, E. Africa (Hilgendorf) ; Mauritius (Brit. Mus.). 



Genus Dromia, Eabr. 



198. Dromia Rumphii, Eabr. 



D. Rumphii (Fabr.), De Haan, Crust. Japou. p. 107, tab. xxxii. (1850). 



Ceylon (Halg). 



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



Genus Pseudodromia, Stimpson. 



199. Pseudodromia integrifrons, Henderson. (PI. XXXVIII. figs. 7-9.) 



P. integrifrons, 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, 

 both 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 indenting the lateral 



