1899.] A. Alcock — Carcinological Fauna of India. 87 



(2) the teeth of the antero-lateral border gradually decrease in 

 size from before backwards, the 4th and 5th being extremely small ; 

 moreover there is a tiny tooth cut in the base of the first, somewhat 

 after the manner of Goniosoma orientate, but very much smaller : 



(3) the carapace is three-quarters as long as broad, and the length 

 of the posterior border is more than half the greatest breadth of the 

 carapace : 



(4) all surfaces of the chelipeds, except that part of the upper 

 surface of the arm that is concealed by the carapace, are covered with 

 transverse squamiform markings ; the hand is costate and there are at 

 least 4 distinct spines on its upper surface, two of which along the inner 

 border are particularly large ; the fingers are as long as the palm. 



(5) the legs are not particularly long and slender ; the merus of 

 the last pair is about two-thirds as broad as long, and the posterior 

 border of the propodite is smooth. 



A mature female and a young male from off the Malabar coast, 

 26-31 fms. 



A small species, the carapace being 9 millim. long and 12 millim. 

 broad. It is more nearly related to Charyhdis { — Goniosoma) than is 

 any other of these small Thalamites with reduced basal antenna-joint. 



59. Thalamita imparimanus, n. sp. 



Closely resembles 7!. investigatoris, from which it differs in the 

 following particulars : — 



(1) the transverse ridges of the carapace are prominent : 



(2 ) the median frontal teeth are about as broad as, are on a lower 

 plane than, and are to some extent overlapped by, the submedian teeth : 



(3) the basal antenna- joint is quite Goniosoma-like, its greatest 

 extent being less than half the major diameter of the orbit : its crest is 

 almost indistinguishable : 



(4) the chelipeds, though otherwise similar, have the inequality in 

 the male even more marked and there are no points on the outer angle 

 of the wrist that are distinct from the general granulation : 



(6) the legs are even longer and slenderer, and the posterior border 

 of the propodite of the last pair is smooth : 



(6) the line of junction between the 6th and 7th abdominal terga 

 of the male is concave instead of straight. 



Three specimens from off the Ganjam coast, 35 fathoms. 



The carapace of the largest is 7 millim. long and 10 millim. broad. 



60. Thalamita sexlohata, Miers. 



Thalamita sexlohata, Miers, Challenger Brachyura, p. 196, pi. xvi. fig. 2 1 

 Henderson, Trans. Linn. Soc, Zool., (2; V. 1893, p. 373. 



