248 PEECT SLADEN TEUST EXPEDITION. 



150. Callionymus affinis, sp. n. 



Length of head (to gill-opening) 3f in the length of the fish. Diameter of eye 2| in 

 the length of head ; eyes contiguovis ; gill-openings small, superior ; preeopereular spine 

 straight, with serrated inner edge and an outer antrorse process at the base ; maxillary 

 extending nearly to the vertical from anterior margin of eye ; occipital region rugose, 

 not covered by skin. Lateral line single. Dorsal IV, 9 ; the anterior fin, in the male, 

 elevated, bixt with the rays scarcely produced ; rays of the second dorsal equal, the last 

 reaching the caudal when laid back. Anal 8, the rays increasing in length posteriorly. 

 Pectorals and ventrals extending beyond origin of anal. Caudal, in the male, elongate, 

 f as long as the fish. Body with dark spots or bars. Males with a heart-shaped 

 blackish blotch on the throat and with stripes on the gill-membranes. Spinous dorsal 

 dark, with undulating oblique white lines and with two small black spots at the upper 

 margin behind the second and third rays respectively ; second dorsal with 3 series 

 of oblong spots ; caudal crossed by dark bars or series of spots ; outer half of anal 

 blackish. 



Maldives, S. Nilandu, 30 fathoms. 



A single specimen, 85 mm. in total length. 



Closely allied to C. i^ersicus, Regan, which has a shorter head (i| in the length of the 

 fish in specimens of this size), the spinous dorsal rather more elevated and with the rays 

 more produced and the caudal fin longer (as long as the fish in specimens of 90 mm.). 

 The two species are very similar in coloration, but in C persicus there is only one black 

 spot at the edge of the anterior dorsal fin, behind the second ray. 



151. Callionymus gardineri, sp. n. (Plate 30. fig. 5.) 



Closely allied to C. maldivensis. Length of head (to gill-opening) 3f in the length of 

 the fish. Diameter of eye 3f in the length of head ; maxillary not extending to below 

 the eye. Dorsal IV, 9; first ray of anterior dorsal, in the male, produced into a 

 filament ; second and third rays equal in length, f the length of head. Anal 8. Caudal, 

 in the male, elongate, slightly more than f the length of the fish. Head and body 

 marbled or variegated ; a small dusky area on the throat ; spinous dorsal with un- 

 dulating oblique stripes with dark edges, which break up posteriorly into series of spots 

 enclosed in dark rings ; a blackish spot just behind the tip of the third ray ; second 

 dorsal and caudal with white (in spirit) spots and vermiculations ; caudal also with 

 some dark spots ; anal with a dark edge. 



Cargados Carajos, 20 to 30 fathoms. 



A single specimen ( d ), 220 mm. in total length. 



152. Callionymus kaianus, Gthr. 



This species, hitherto known only from the type, a male specimen dredged by the 

 ' Challenger ' at a depth of 129 fathoms near the Ki Islands, between Australia and 

 New Guinea, is represented in the Gardiner collection by a female, dredged at a depth 

 of over 123 fathoms on the Saya de Malha Bank. The first dorsal ray is not produced, 

 but in other respects this example closely resembles the type. 



