444 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.41. 



This species closely resembles C. nigrotseniatus, but tlie caudal 

 peduncle is longer, the snout shorter, and the coloration distinctive. 



Genus SYNAGROPS Gunther. 



Four species have previously been described, S. japonicus from 

 Japan, S. 'pMlipjnnensis from the Philippines, S. argyrea from the 

 Hawaiian Islands, and S. splendens from the Gulf of Oman. 



SYNAGROPS SERRATOSPINOSA Smith and Radcliffe, new species. 

 Plate 38, fig. 2. 



Dorsal ix-i,9; anal ir,7; scales about 3 + 7-28. 



General form cylindrical ovate, compressed; head 3, short, depth 

 nearly equaling length, dorsal and ventral contour lines nearly sym- 

 metrical, convex; body short, deep, depth 3; caudal peduncle com- 

 pressed, depth 2.75, length 1.46; eye 2.65, large; snout 3.93, short, 

 rounded; mouth small, oblique; maxillary 1.93, reaching vertical 

 from middle of eye; interorbital 3.15, broad, convex, rugose; angle 

 and horizontal margin of preopercle strongly serrate, angle of crest 

 with four or five strong serrations; opercle ending in two feeble 

 spines; subopercle produced beyond opercle; posterior angle of inter- 

 opercle serrate ; a pair- of elongate, recurved canines at symphysis of 

 lower jaw, in front of these a broad band of unequal cardiform teeth, 

 narrowing posteriorly to a single row of long, slender canines with a 

 very narrow outer band of small teeth, which entirely replaces the 

 canines posteriorly; a pair of long canines on upper jaw, wider apart 

 and allo\ving pair on lower jaw to close between them; a band of 

 villiform, almost cardiform, teeth widening out on sides of lower jaw 

 and again narrowing posteriorly; a semilunar patch of small paved 

 teeth on vomer and a narrow band of cardiform teeth on palatines; 

 throat blackish, peritoneum brownish black; pyloric coeca six; scales 

 cycloid, very deciduous. 



Origin of dorsal from tip of snout 2.50 in length; dorsal spines 

 well developed, third longest, 1.63, first with a single spinule, second 

 with strong regular close-set serrations, projecting tip of third with a 

 single spinule; spine of second dorsal serrate, longest ray about 2.20; 

 caudal forked; anal similar to second dorsal, about 2.20, second spine 

 strong, serrate, 2.32; ventrals 1.46, spine serrate; pectorals 1.30. 



Color in alcohol: Ground color cream-buff, dorsal surface dusky, 

 ventral silvery; fins dusky. 



Type.— C&t. No. 70254, U.S.N.M., 8.1 cm. in length, taken with a 

 beam trawl at station 5365 (lat. 13° 44' 24" N.; long. 120° 45' 30" 

 E.), Batangas Bay, Luzon, at a depth of 214 fathoms. 



This species is frequently taken with *S^. p)Tiilippinensis . It is 

 smaller, with a deeper body, shorter, more robust head, larger eye, 



