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.I. = 23*50, i.e., two-thirds measurement given by ALCOCK for large 

 male. In the smallest specimens (C.I. = 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.I. = 23 '50) it quite does so. In ALCOCK'S still larger specimens 

 it projects beyond the frontal teeth. In an immature male (C.I. = 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.I. = IS'OO. 



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



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



Description: C.I. C.b.^C.l. 2nd W.L. -=- C.I. 2nd W.L. -r 4th W.L. 



(a) Young male . . 10'25 1*10 3*25 (approx.) 2'50 (approx.) 



(b) . . 10*25 1-12 



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.I. ranges from 6*50 to 15*25. 



OXYRHYNCHA. 



Achaeus lacertosus, STIMPSON, 1857 A.1, p. 172. 



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

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



Description: C.I. (exclusive of rostrum) of an adult male = 11*00. 



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



Localities : Pearl banks, Gulf of Manaar, four specimens (a, d, /, 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). 



