478 Mr. R. I. Pocock on Stomatopod Crustaceans. 



longer and stronger than the interior ; in scyllarus they are 

 subequal. 



Measurements in millimetres : — Length (from anterior 

 margin of rostrum to the median notch of telson) 60 ; length 

 of carapace at the side 14, of antennal scale 11 ; width of 

 rostrum 4, length 2 ; length of eye and width of cornea 4 ; 

 width of telson 10, length from anterior end of median keel 

 to median notch 8. 



A single female example from Macclesfield Bank, 35 fath. 



On the whole this species seems to come nearest to 

 O. scyVai'us. It differs, however, in the arrangement of the 

 crests of the telson, tlie size of the eyes, the form of the 

 rostrum, the bifid ophthalmic tergite, and the number of teeth 

 on the raptorial limbs. In having large eyes and many teeth 

 on the raptorial limbs it resembles O. Edwardsii^ Berth., but 

 diflfers in the structure of the telson, the small antennal scales, 

 form of rostrum, &c. 



(12) Gonodactylus carinifer^ sp. n. (PI. XX. B. fig. 4.) 



Belonging to the same section as the preceding, G. Hansemi, 

 but closely related to G, cidtrifer. 



Colour (in alcohol) a uniform ochraceous tint, the dorsal 

 surface marked everywhere with fine, close-set, irregular 

 star-shaped patches of pigment. 



Eyes very large and globular. The dorsal plate of the 

 ophthalmic somite with its antero-lateral margins directed 

 upwards. 



nostrum ovately convex, its extremity bent downwards. 

 Antennal scale rather large, a little shorter than the carapace 

 measured along the dorsal middle line. The manus of the 

 raptorial limb moderately dilated and armed with three 

 distinct sharp subequal teeth. The margins of the free 

 cephalothoracic tergites not dilated ; the posterior angles of 

 the posterior abdominal tergites spinous. The sixth abdo- 

 minal tergite furnished with six posteriorly spined crests. 



The telson almost exactly like that of G. cultrifer (White), 

 except that the median crest is much lower, being only about 

 half as high as it is long, with its upper edge only lightly 

 convex, and that there is no trace of a crest near the external 

 margin of the anterior half of the telson. 



Measurements in millimetres : — Length from anterior edge 

 of rostrum to median notch of telson 27, of carapace at the 

 side 7, of antennal scale 5*6 ; length of eye 3, width of cornea 

 2*8 ; width of telson 5, length from median notch to anterior 

 edge of median keel 3"8. 



