1 90 Carcinological Fauna of India. 



always enlarged and acuminate. The tubercles, the tumid intestinal 

 region, and sometimes also the intervening hollows, are crisply 

 granular. 



The buccal cavern is elongate. 



The chelipeds in both sexes are little longer than the carapace, and 

 are rather slender : they are finely granular, especially the arms. The 

 band is a little broader at its proximal than at its distal end, where it 

 is about half as long as broad : the fingers are little more than half the 

 length of the hand. 



Colours in spirit ivory white. 



The carapace of the male is about 6 millim. long and 5 millim. 

 broad : that of the adult female is 9 millim. long and 7 millim. broad. 



Numerous specimens are in the Indian Museum, from the Maldives 

 and Andamans. 



Nucia, Dana. 



Nucia, Dana, U. S. Expl. Exped., Crust, pt. I. p. 397. 

 Nucia, Bell, Cat. Leucos. Brit. Mus. p. 24. 



Carapace strongly convex, broad, transversely somewhat ovoidal 

 in shape, its surface uneven and densely covered with vesiculous or 

 pustulous granules, and with the regions usually well demarcated. 



The front is narrow, broadly bidentate, and somewhat sunk behind 

 the level of the front edge of the buccal cavern. The pterygostomian 

 regions are puffed out so as to inci'ease the squat and sunken appear- 

 ance of the front. There is a remarkably broad interval between the 

 orbits and the edge of the buccal cavern. 



The eyes are large, and the orbits have the upper edge deeply 

 emarginate so that the retracted eye is hardly at all concealed. The 

 antennules fold obliquely, and the antennas have the basal joint rather 

 closely filling the gap at the inner canthus of the orbit and the flagel- 

 lum small but distinct. 



The buccal cavern is moderately elongate : the exognath is not 

 dilated and has the outer border almost straight : the triangular merus 

 of theendognath is not much shorter than the ischium measured along 

 its inner edge. 



The chelipeds are very short and stout : the legs also are remark- 

 ably stout. 



In tlie Indian Museum Collection, the only representative of this genus is a 

 male specimen of Nucia speciosa, Dana, from Opolu. This is, quite clearly, closely 

 allied to the species named Randallia pustulosa and Randallia lamellidentata by 

 Wood-Mason. [Whether these are really Randallia as defined by Stimpson it is 

 difficult to say ; but they are certainly congeneric with Miers' Randallia gramulata 

 ('Challenger' Brachyura, p. 317, pi. xxvi. fig. 1)]. 



