BRACHYURA. 403 



from its fellow of the opposite side; (7) lobe IP is not subdivided by a longitudinal 

 groove and is more or less top-shaped, an anterior strip being marked off. 



Actaea ruppelli (KnAussJ, 1843 A. 3, p. 144. 

 Locality : Navakaddu Paar, Gulf of Manaar, three specimens. 



Actaaa alcocki, n. sp. Text-fig. 5. 



Locality : Gulf of Manaar. 



Description: An adult male. C.I. = 16 '5. 



The breadth of the carapace across region of last pair of antero -lateral teeth is 

 1*53 its length; breadth across region of next to last pair of antero-lateral teeth 

 is 1-48 its length; frontal b.-rC.l. = 0'36 ; fronto-orbital b.-i-C.l. = 0'64 ; antero- 

 lateral border l.-s-C.l. = 071 ; postero-lateral border 1.-=- C.I. =0'60 ; posterior border 1. 

 -T- C.I. = 0'60 (the junction of the posterior and postero-lat. border is the posterior end 

 of a finely marked groove). The carapace and exposed surfaces of chelipeds and 

 walking legs are covered with a short down which does not conceal the lobulation or 

 granulation ; the anterior two-thirds of the carapace are tabulated, the lobules are 

 distinctly though not strongly demarcated by shallow grooves ; on the posterior one- 



Fig. 5. Ada alcocki, n. sp. 



third of the carapace the lobulation is obsolete. The whole dorsal surface of the 

 carapace, grooves and lobules, and the exposed surfaces of chelipeds and walking legs, 

 are covered with crisp, not particularly strong, granules. The lobes of the antero- 

 lateral border are bluntly pointed, increasing in size from before backward ; the first 

 is obsolescent. The front is vertically deflexed, continuing the curve of the anterior 

 part of the carapace ; it is quite obviously bilobed ; at the outer base of each lobe the 

 inner supra-orbital angle is produced vertically downwards to form a distinct tooth. 

 Supra-orbital margin moderately tumid, cut by two fissures in its outer portion and 

 separated from the lower border by a third fissure. 



Basal autennal segment does not quite reach the inner orbital angles. 



The surfaces of the arm are smooth, a row of small sharp granules borders its lower 

 edge. The upper and lower borders and the outer surfaces of hand and wrist (i.e., the 



3 F 2 



