246 PERCY SLADEN TRUST EXPEDITION. 
back darker; fins yellowish or dusky ; a dark spot on the basal part of the caudal 
continued into a dusky stripe on each lobe. 
Sea of Oman, 140 to 200 fathoms. 
Three specimens, 70 to 100 mm. in total length, collected and presented to the British 
Museum by F. W. Townsend, Esq. 
Champsodon vorax. 
Champsodon vorax, Giinth. Proc. Zool. Soc. 1867, p. 102. 
Depth of body 5 in the length, length of head 33. Snout scarcely longer than eye, the 
diameter of which is 44 in the length of head and greater than the interorbital width. 
Przemaxillaries with a double notch anteriorly ; maxillary extending beyond the vertical 
from posterior edge of eye; distance from tip of snout to end of maxillary 3 the length 
of head; least distance between eye and maxillary considerably less than the diameter 
of eye. Dorsal V, 119; distance between origins of dorsals about 3 the distance from 
tip of snout to origin of spinous dorsal. Anal I 17; origin a little nearer to base of 
caudal than to tip of snout. Ventrals $ the length of head. 
China Seas. 
A single specimen, less than 60 mm. in total length, in poor condition; type of. the 
species. 
Parapercidide. 
145. Parapercis punctulata, ©. & V. 
Maldives, N. Male, 35 fathoms. 
Trichonotide. 
PSAMMICHTHYS, gen. nov. 
Body elongate, compressed, scaleless. Head naked; eyes very small, superior, placed 
close together; anterior nostril tubular; mouth oblique; lower jaw pointed, strongly 
projecting; maxillary exposed; teeth conical, in narrow bands in the jaws; gill- 
membranes narrowly attached to the isthmus. A single dorsal fin with 19 rays, the 
first 5 of which are flexible spines ; anal with 14 rays, the first spinous ; caudal somewhat 
pointed; pectoral with 8 rays; ventrals close together, a little in advance of the 
pectorals, each with a spine and 5 soft rays, the inner rays the longest. 24 myotomes. 
146. Psammichthys nudus, sp.n. (Plate 31. fig. 1.) 
Depth of body 7 to 74 in the length, length of head 4 to 43. Snout short, maxillary 
extending to below the eye or a little beyond. Dorsal V 14, the fifth spine rather 
widely separated from the fourth and from the first articulated ray. Anal I 138. 
Pectoral shorter than ventrals, which are 4 the length of head. Uniformly brownish. 
Seychelles Group, Praslin Reef, from sand-siftings. 
Three specimens, the largest 38 mm. in total length. 
147. Trichonotus setigerus, Bl. Schn. 
Cargados Carajos, 20-80 fathoms. 
