BRACHYTJRA. 353 



Crjrptodromia gilesi, Alcock, 1800 A. 5, p. 146; A.Cat., pi. iii., fig. 13. 



Locality : Gulf of Manaar, one specimen. 



Description ; Male, C.L = 8 - 25 ; C.b. -S-C.L = 1 -03 (CM). = straight line uniting tips 

 of last antero-lateral teeth). 



ConchcBcetes artificiosus (Fabr.), 1708 A.5, p. 151 ; A.Cat., pi. iii., fig. 16. 



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



Description : (a) (h) (c) 



C.l 7-00 7-00 7-25 



C.b. -r- CI 0-06 0-06 



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.l. (frontal teeth included) = 10-25 ; 

 C.b. -r C.l. = TOO. 



It confirms Alcock's doubtfully created species, showing, however, certain additional 

 points of difference from C artificiosus not mentioned by Alcock : (l) Prominent 

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

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

 the frontal teeth (its length -=- C.l. = - 10) ; (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. (I>) young male. 



C.l 8-50 14-75 



C.b. -=- C.l 1-26 T36 



Remarks. Recorded as fossil by de Man from post-tertiary of Celebes (' Samm. 

 Geol. Mus. Leiden,' (1), vii., p. 277, 1004). 



Calappa philargius (Linn.eus), 1764 A.2, p. 145. 

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



2 Z 



