BRACHYURA. 353 



Cryptodromia gilesi, ALCOCK, 1899 A.5, p. 146 ; A.Cat., pi. iii., fig. 13. 

 Locality : Gulf of Manaar, one specimen. 



Description : Male, C.I. = 8'25 ; C.b. -i-C.l. = 1'03 (C.b. = straight line uniting tips 

 of last antero-lateral teeth). 



Conchcecetes artificiosus (FABR.). 1798 A.5, p. 151 ; A.Cat., pi. iii., fig. 16. 



Locality : Trincomalee, three young specimens (a, b, c). 



Description : (a) (b) (c) 



C.I 7'00 7-00 7-25 



C.b. -rCl 0-96 0-96 



Remarks : New to the Ceylon fauna. 



Conchcecetes andamanicus, ALCOCK, 1899 A.5, p. 152 ; A.Cat., pi. iii., fig. 17. 



Locality : Pearl banks, Gulf of Manaar, one specimen. 



Description : Male, probably adult. C.I. (frontal teeth included) = 10'25 ; 

 C.b.-*- C.I. = 1-00. 



It confirms ALCOCK'S doubtfully created species, showing, however, certain additional 

 points of difference from C. artificiosus not mentioned by ALCOCK: (1) Prominent 

 fringe of longish hairs on antero-lateral borders of carapace ; (2) well-marked median 

 longitudinal groove on anterior part of the carapace running back from notch between 

 the frontal teeth (its length -f- C.I. = 0*19) ; (3) the well-developed pair of frontal teeth 

 more strongly deflexed ; (4) sub-hepatic regions by no means so swollen, in correlation 

 with which one finds that the antero-lateral border of the buccal cavern slopes down- 

 wards from the straight anterior border of the same region at a more obtuse angle (80 

 approximately instead of 65 approximately) ; (5) a kind of elongated tubercle 

 occupies middle region of a not very well-marked ridge connecting lateral termination 

 of cervical groove and antero-lateral angle of buccal cavern. 



The specimen is protected by a Pectunculus valve. 



OXYSTOMATA. 



Calappa lophos (HERBST), 1785 A. 2, p. 144. 



Localities : Trincomalee, one specimen (a) ; Gulf of Manaar, one specimen (b). 



Description : (a) young female. (b) young male. 



C.I 8-50 1475 



C.b. -r- C.I T26 T36 



Remarks. Eecorded as fossil by DE MAN from post-tertiary of Celebes (' Samm. 

 Geol. Mus. Leiden,' (1), vii., p. 277, 1904). 



Calappa philargius (LINNAEUS), 1764 A. 2, p. 145. 



Localities ; Gulf of Manaar, one specimen (a); Station I., off Negombo, one 



2 Z 



