EEPORT ON THE ANOMURA. 9 



interlocking teeth, but even when fully closed a sligLt hiatus is left. The first and 

 second pairs of ambulatory limbs are of moderate size, and the propodal and carpal joints 

 have their outer and posterior surfaces strongly tuberculate, the dactyli end in curved 

 horny processes of a yellowish colour, and a small tuft of hairs projects from the lower 

 surface of each. The third and fourth pairs of ambulatory limbs are comparatively of 

 small size, and the proportions of their various joints agree with those of the last species ; 

 each limb terminates in two opposed horny claws. The third pair are slightly tuberculate, 

 while the fourth pair are smooth. The hairs met with on this species — especially those 

 of the ambulatory limbs — are club-shaped. 



The abdomen is strongly tuberculate externally, each segment, except the last, with 

 a median series of three tubercles, two of these being placed near the posterior border of 

 the segment, and a lateral series of two on either side of the median pair. The lateral 

 tubercles are, however, fused on the penultimate and antepenultimate segments, so as to 

 form a single projection. The sexual appendages of the male are well developed, more 

 particularly those of the first pair, and the vasa deferentia are protruded as two mem- 

 branous processes which project forwards under cover of these. In the male also, two 

 rounded tubercles exist on the sterna of the fourth and fifth thoracic segments respec- 

 tively. The sternal tubercles in the female have the normal arrangement met with in 

 species of Cryptodromia. 



Breadth of carapace 8'5 mm., length of carapace 7'5 mm., of chelipede 12'5 mm., of 

 first ambulatory leg 9 mm. These measurements are taken from the larger (male) 

 specimen. 



It is with considerable hesitation that I venture to describe this species under a new 

 name. Mr. Haswell has furnished the description of an Australian species, Dromia 

 sculpta, with which it may subsequently prove to be identical, but not having seen the 

 latter, it is impossible to decide from the short diagnosis in the Catalogue of Aus- 

 tralian Stalk and Sessile- Eyed Crustacea. The Challenger specimens at the same time 

 undoubtedly belong to the genus Cryptodromia. The British Museum collection contains 

 examples erroneously named Dromia nodipes, Lamarck. I have, however, had the 

 opportunity of examining an authentic specimen of the latter in the Paris Museum 

 of Natural History, and of comparing the Challenger specimens with it. Dromia 

 nodipes is a much larger species, tlie carapace is more rotund, its surface glabrous, 

 and the tubercles are small and rounded ; moreover the abdominal segments are 

 smooth. Cryptodromia tuberculata, Stimpson, has the carapace smooth, and the 

 second and third pairs of feet have the carpal joint armed superiorly with from four to 

 five teeth. 



Habitat.— OS ih.Q Australian coast; "April 1874, 2-10 fathoms." 



(ZOOL. CHALL. EXP. PART LXIX. 1887.) Zzz 2 



