202 A. Alcock — Carcinological. Fauna of India. [No. 2, 



branchial spines are always prominent and very conspicuous. The 

 rostrum consists of two spines, which are usually long and slender. 

 The eyes are small, and are retractile against a sharp post-ocular pro- 

 cess which commonly is but little cupped : there is also a supra-ocular 

 eave which terminates either in a forwardly directed tooth or in an 

 upturned spine. Basal antennal joint not very broad, sharply trun- 

 cated : the mobile portion of the antenna? freely exposed on either side 

 of the rostrum. 



Merus of the external maxillipeds as broad as the ischium, slightly 

 expanded at the antero-external angle, and bearing the palp at the 

 antero-internal angle. 



Chelipeds in the adult male (but not in the female and young male) 

 enlarged, with the palms broadened and compressed. 



First pair of ambulatory legs markedly the longest. 



The abdomen in both sexes consists of seven distinct segments. 



There is certainly a close superficial resemblance between this genus 

 and Anamathia ; but I quite agree with Prof. Sars that the two forms 

 are not very closely united. Prof. Sars thinks that Scyramathia is 

 nearest to Hyastenus, an opinion with which I concur, although I also 

 think that there are quite as close relations to Pugettia. 



Scyramathia pulchra, Miers. 



Anamathia pulchra, Miers,' Challenger ' Brachyura, p. 26, pi. iv. fig. 1 (adult 

 male). 



Anamathia livermorii, Wood-Mason, Ann. Mag. Nat. Hist. March 1891, p. 260 

 (young male and adult female). 



Body and limbs everywhere closely covered with short hairs, which 

 on the carapace are peg-shaped ; and with numerous long scattered 

 setae. The carapace, which is subpyriform, is armed with twenty 

 long sharp spines disposed in five longitudinal series. Of these spines 

 five are on the gastric region, one is on the cardiac, and one on the 

 intestinal region, one stands above either eye, one on each hepatic, and 

 four on each branchial region : in addition there is a distinctly cupped 

 post-ocular lobe. 



The rostrum consists of two slender divergent spines, the length of 

 which is more than half that of the carapace. 



The eyes are small, and the cornea, though retractile against the 

 post-ocular lobe, can never be concealed. 



The basal antennal joint is broad, and has its antero-external angle 

 somewhat produced : the mobile portion of the antenna is completely 

 exposed to dorsal view. 



