BRACHYURA. 367 



Dorippe dorsipes (Linnaeus), 1764 A.2, p. 277. 



Localities : South end of Cheval Paar, two specimens ; Pearl banks, Gulf of Manaar. 

 six specimens ; Coral reefs, Gulf of Manaar, five specimens ; Galle, one specimen. 



Description : There are no ovigerous females ; probably none of the females are 

 adult. Of the males perhaps two or three of the largest specimens are adult. The 

 largest male has C.l. = 23 "50, i.e., two-thirds measurement given by Alcock for large 

 male. In the smallest specimens (C.l. = 8'50 and 9 - 00) the spine at outer angle of 

 orbit falls far short of level of frontal teeth ; it nearly reaches it in larger specimens ; 

 in the largest of all (C.l. = 23 '50) it quite does so. In Alcock's still larger specimens 

 it projects beyond the frontal teeth. In an immature male (C.l. = 12*00) from " Pearl 

 Banks, Gulf of Manaar," there is on abdominal tergum IV. a small acute tubercle on 

 either side of the larger median tubercle. The hands are still symmetrical in a male 

 whose C.l. = 18-00. 



Dorippe facchino (Herbst), 1785 A.2, p. 278. 



Locality : Pearl banks, Gulf of Manaar, two specimens. 



Description: C.l. C.b. h-C.1. 2nd W.L. ~- C.l. 2nd W.L. -=- 4th W.L. 



(a) Young male . . 10 - 25 1 - 10 3 '2 5 (approx.) 2 "50 (approx.) 



(6) . . 10-25 112 



In neither does the spine at the external orbital angle project so far forward as the 

 level of the frontal teeth. They are less hairy than Alcock describes for the adult ; 

 hair is entirely absent from walking legs 1 and 2. In this respect they suggest the 

 specimens included by Alcock as " ? D. granulata, de Haan" (A.2, p. 279). 



Raninoides serratifrons, Henderson, 1893 A.2, p. 293. 



Localities : South of Galle, deep water, three specimens ; west of Periya Paar, 

 17 to 24 fathoms, four specimens. 



Description: All are apparently immature. C.l. ranges from 6 -50 to 15 2 5. 



OXYRHYNCHA. 



Achaeus lacertosus, Stimpson, 1857 A.l, p. 172. 



Localities : Aripu coral reefs, Gulf of Manaar, two specimens (adult S ) ; pearl 

 banks, Gulf of Manaar, one specimen (adult <?). 



Description: C.l. (exclusive of rostrum) of an adult male = 11-00. 



Achaeus dubia, n. sp. Text-fig. 3. 



Localities : Pearl banks, Gulf of Manaar, four specimens [a, d, f, g) ; Chilaw Paar, 

 one specimen (e) ; west of Periya Paar, 17 to 24 fathoms, one specimen (b); off 

 Negombo, Gulf of Manaar, one specimen (c). 



