40 CEYLON PEAEL OYSTER REPORT. 



the front margin, but has no process. The fourth joint has a spine at the front apex 

 and three on the hind margin, the small triangular fifth has two spines, and the sixth 

 three on the hind margin ; the finger has a horny principal nail, but the accessory 

 nail is only represented by a small pellucid spine. 



The second gnathopods have similar fingers, but the four preceding joints more 

 elongate, the fifth joint being of the same character as in the perseopods. Most of 

 these limbs show a fur-like clothing of the inner margin of the fourth and two 

 following joints ; the spines are quite small and not very numerous ; the proportions 

 of the joints are variable, in the long fifth perseopods the fourth joint being as long as 

 the third or the sixth and a little longer than the fifth. 



The first pleopods have the inner branch triangular with no distal emargination of 

 the inner border. Both branches are covered with scale-like markings. The male 

 appendix of the second pair is produced only a little way beyond the branches and is 

 subapically widened but apically narrowed to a short obtuse point, thus differing 

 from the longer, not subapically widened, stilet in C. granulata. The third pleopods 

 differ from those of C. latreillii by having the inner branch considerably shorter than 

 the outer, and the part of the outer branch below the suture with a breadth much 

 less in excess of its length. 



The uropods have a dorsal tubercle on the peduncle ; the peduncle is widened 

 above on the inner side, and is still more widened below into the short unjointed 

 inner ramus. The outer ramus is very long and nearly straight, the tolerably acute 

 tip tending to bend outwards. 



Length at full stretch from front of head to end of dorsal process of pleon, 

 8 '5 millims. The uropods reach little beyond the dorsal process. 



Localities : Cheval Paar, Gulf of Manaar ; deep water off Galle ; off Foul Point, 

 Trincomalee, Station XXIV. 



Female. The form which I regard as the female of this species is devoid of the 

 long dorsal process and has the rami of the uropods subequal. It is also considerably 

 smaller than the male. But in other respects the agreement between the two forms 

 is so close as to leave little room for doubt that they are the same species. The 

 maxillipeds are especially characteristic. The antennae, first gnathopods, and fifth 

 peraeopods, as will be seen by the illustrative figures, are in close agreement. The 

 pleopods, in addition to agreement in shape, show the same scale-like markings. 



The uropods have the fixed branch squarely truncate, the outer narrowly ovate, 

 with its apex acute, turned slightly outward. The front division of the pleon has a 

 faintly marked medio-dorsal projection of its hind margin. The telsonic segment has 

 two prominent submedian bosses and a semicircular apical notch. 



Localities : Trincomalee, Station XXIV., off Foul Point; deep water off Galle. 



Cilicsea beddardi, n. sp. Plate X. (A), (B). 

 Male. This species is nearly related to C. caudata (Say), but, according to the 



