244 PERCY SLADEN TRUST EXPEDITION. 



2. Prseopercular spine moderate, extending about | the distance from its base to the vertical 

 from the base of pectoral. 



a. Third and fourth branched rays of the ventral fins longest, considerably longer than the 



first branched ray. 



Diameter of eye 6 in the length of bead, which is 3^ in the length of the fish 

 (in specimens of 55 to 60 mm.) ; origin of anal nearer to tip of snout than 

 to base of caudal micropJdhalmus , sp. n. 



Diameter of eye 4 to 5 in the length of head, which is 4 in the length of the 

 fish (in specimens of 40 to 75 mm.) ; origin of anal equidistant from tip 

 of snout and base of caudal, or nearer the former capensis, sp. n. 



Diameter of eye 4i to 5 in the length of the head, which is 3^ to 3i in the 

 length of the fish (in specimens of 50 to 75 mm.) ; origin of anal nearly 

 equidistant from tip of snout and base of caudal arafurensis, sp. n. 



b. Branched rays of the ventral fins subequal, the third and fourth not or scarcely longer than 



the first. 



Distance from tip of snout to extremity of maxillary 3 the length of head ; 



least distance between eye and maxillary a little less than the diameter of eye. omanensis, sp. n. 



Distance from tip of snout to extremity of maxillary | the length of head ; 

 least distance between eye and maxillary considerably less than the 

 diameter of eye vorax, Gthr., 1867. 



B. Distance between origins of dorsals less than ^ of the distance from 



tip of snout to origin of spinous dorsal fimbriatus, Gilb., 1905. 



Champsodon guentheri, sp. n. 



Champsodon vorax {non Giinth., 1867), Giinth. 'Challenger' Shore Fishes, p. 52, pi. xxiii. fig. A 

 (1880). 



Depth of body o\ in the length, length of head 3g to 3f. Snout 1^ to If as long as 

 eye, the diameter of which is 5 to 5^ in the length of head and greater than the inter- 

 orbital width. Prsemaxillaries without anterior notch; maxillary extending to below 

 posterior edge of eye or a little beyond ; distance from tip of snout to end of maxillary a 

 little more than \ the length of head ; least distance between eye and maxillary f to f 

 the length of head, prseopercular spine of moderate length ; 11 or 12 gill-rakers on the 

 lower part of the anterior arch. Dorsal V, 1 19-20 ; second dorsal spine nearly \ the 

 length of head ; distance between origins of dorsals about \ of the distance from tip of 

 snout to origin of spinous dorsal. Anal I 17-18 ; origin equidistant from tip of snout 

 and base of caudal or nearer the latter. Ventrals f to f the length of head, extending 

 to the origin of anal in the young, but not in the adult. Silvery ; back darker ; caudal 

 dark at the base. 



Philippine Islands, 115 fathoms ; and Nares Harboui-, Admiralty Islands. 



Two specimens, 90 and 140 mm. in total length, from the ' Challenger ' collection. 

 The smaller example, from the Admiralty Islands, has not been included in the 

 description. 



Champsodon capensis, sp. n. (Plate 27. fig. 2.) 



Depth of body 5 in the length, length of head 4. Snout from as long to If as long 

 as eye, the diameter of which is 4 to 5 in the length of head and greater than the inter- 



