BRACHYURA. 393 



the 1st and 4th pairs their lower border also, armed with a spiniform crest ; the other 

 segments are a little compressed from side to side, hut not carinate. 



Differences from Cryptopodia fornicata are : (1) The duller surface of the carapace 

 and chelipeds (due largely to fine pitting) ; (2) the more rounded surfaces of the 

 prominences, and less sharply cut armature ; (3) the angular wrist ; (4) form of rostrum ; 

 and (5) the swollen external maxillipeds. The last-named particular separates the 

 new species at a glance from any other member of the genus known to me. 



Heterocrypta petrosa, KLUNZINGER, 1906 (K., p. 53, pi. ii., figs. 9a, 6). 



Locality : Gulf of Manaar, one specimen (a) ; off Mutwal Island, one specimen (b). 

 Description: C.I. C.b.^C.l. Ch.l.-7-C.l. Rt.H.b. + Lt.H.h. 



(a) Ovigerous ? . . . 13'25 1'47 2'00 1'50 



(b) Adult 3 .... 18-00 1'57 2'44 1'35 



In the female specimen the true posterior border of the carapace forms a convex 

 bulge. The carapace regions are more rounded in the male specimen than in the 

 female. The latter variation is probably not concerned with sex, for KLUNZINGER' s 

 figure of a male bears a stronger resemblance to my female than to my male example 

 in this respect. 



Remarks. This species falls decidedly into the genus Heterocrypta, as defined by 

 ALCOCK, but, having conformed so far, its further resemblances are rather to Crypto- 

 podia spatulifrons than to any Heterocrypta. Such resemblances concern (1) general 

 appearance of cheliped (no crest, however, on outer surface of wrist) ; (2) general 

 shape of posterior border of the animal (i.e., true posterior border of carapace together 

 with posterior border of clypeiform expansions) ; (3) sculpture of exposed surface of 

 the external maxillipeds, of uncovered portions of thoracic sterna, and of the 

 abdominal terga. 



On its part, Cryptopodia spatulifrons (as also C. dorsalis) makes some approach to 

 Heterocrypta in the slight posterior expansion of its carapace much slighter, for 

 example, than in Cryptopodia fornicata. 



Zebrida adamsi, WHITE, 1847 A.I, p. 287. 



Localities : Gulf of Manaar, one specimen ; south of Manaar Island, two specimens. 

 Description: C.I. of an adult male (rostral lobes included) = 8'0. 



Harrovia albolineata, ADAMS & WHITE, 1848 (' " Samarang" Zool.,' Crust., p. 56). 



Localities: South of Manaar Island, hauls 3, 4 and 5, two specimens (adult <?, 

 adult' ? ) ; pearl banks, Gulf of Manaar, one specimen (young ? ) ; coral reefs, Gulf of 

 Manaar, one specimen (ovigerous ? ). 



Description; C.I. of ovigerous female = 7 '00. 



3 E 



