238 PERCY SLADEN TRUST EXPEDIT[OX. 



123. Flatyceplialns cooperi, sp. n. (Plate 29. fig. 5.) 



Depth of body about 6 in the length, length of head about 2f. Snout longer than 

 eye, the diameter of which is 3 J to 4| in the length of head and about 4 times the 

 interorbital width. Maxillary extending to below anterior j of eye. A more or less 

 developed spine in the middle of each bone of the upper surface of the cranium and also 

 on the prcBorbital and first suborbital ; supraorbital ridges serrated ; second suborbital 

 with a serrated ridge ; three prseopercular spines, the upper ^ to f the diameter of eye. 

 58 to 65 scales in a longitudinal series ; anterior 5 to 8 scales of the lateral line spiniferous. 

 Dorsal IX, 11-12. Anal 11. Caudal subtruncate. Ventrals extending to third or 

 fourth ray of anal. Spinous dorsal blackish superiorly ; pectorals and ventrals obscurely 

 spotted. 



Seychelles Group, Amirante, 30 fathoms ; Cargados Carajos, 20-30 fathoms. 



Seven specimens, the largest 200 mm. in total length. 



Named after Mr. C. Forster Cooper, M.A., who accompanied Mr. Gardiner on his 

 expeditions. 



124. Flatycephalus 2)risti(jer, C. & V. 

 Seychelles Group, Amirante, 80 fathoms. 



125. PJatycephalits oli(jolepis, sp. n. (Plate 29. fig. 4.) 



Depth of body 5f in the length, length of head 2|. Breadth of head If in its length. 

 Snout as long as eye, the diameter of which is 3| in the length of head and 4 times 

 the interorbital width. Maxillary extending to below anterior ^ of eye ; vomerine teeth 

 in 2 separate patches. Head with numerous, compressed, curved spines ; two pairs on 

 the snout, 3 in front of each orbit, 10 or 11 on each supraorbital ridge, which is followed 

 on each side by a group of 4 ; a spine on each parietal, 2 or 3 behind the middle of each 

 orbit, 2 on each supratempoi-al, a series of 3 on each post-temporal. Suborbital ridge 

 spiuate throughout, ending in a prseopercular spine of moderate length, below which 

 are 2 others. Two opercular spines and one on the clavicle. 5 gill -rakers on the lower 

 part of the anterior arch. 31 scales in a longitudinal series ; only the anterior 3 or 4 

 scales of the lateral line spiny. Dorsal IX, I 10. Anal 11. Ventrals extending to the 

 fovirth or fifth ray of anal. Caudal subtruncate. A dusky spot on each ventral fin. 



Cargados Carajos, 20 to 30 fathoms. 



A single specimen, 100 mm. in total length. 



126. Flatycephalus pediviacula, sp. n. 



Closely allied to the preceding, differing as follows : — Four spines in front of each 

 orbit ; supraorbital ridge entire anteriorly, serrated posteriorly, followed by a series of 

 3 spines ; 2 spines on each parietal, a series of 4 or 5 behind the middle of each orbit. 

 Suborbital ridge less strongly serrated than in P. oligolepis (a series of about 26 serrse 

 in this species instead of 17 as in the preceding one). 



Maldives, Kolumadulu, 35 fathoms. 



A single specimen, 62 mm. in total lengtli. 



