438 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 
22. COELORHYNCHUS QUINCUNCIATUS, new species. 
Type-specimen.—Cat. No. 78213, U.S.N.M., a mature female 237 
mm. long to end of a pseudocaudal of 7 rays, or 93.3 mm. to anus: 
from Albatross station 5392, between Samar and Masbate, in 135 
fathoms. 
List of paratypes. 
Depth | Bottom | Number 
gear Locality. in tempera- | of speci- 
as Z fathoms. ture. mens. 
5121/3)" OF east:coastio£ Mindoro scot a. eee eee eee eee 
5392 | Between Samar and Masbate 
3O90 eee ee do 
ips dal peer GOSS See ac eee ee Rene pai re Be eet ae 
5412 | Between Cebu and Bohol 
5454 | Off southeastern Luzon 
oh 
ete 
ys- 
This species is not recorded at depths so great as are C. argentatus 
(318 fathoms) and @. thompsoni (200 fathoms). : 
In the description which “follows, those measurements and counts 
included in the parentheses after each measurement or count of the 
type, were taken on paratypes 60 to 77 mm. long to anus. When 
markedly different, there are added, separately, the measurements 
of three smaller specimens, 50 iG 57 mm. long to anus. 
Fin-rays—first dorsal, II, 9 (or II, 10); pectorals, 16 (to 18); 
ventrals, 7. 
The greatest depth of the body is contained 2.1 (1.85 to 2.3) times 
in the head; the greatest width, across the pectoral bases, 3.0 (2.5 to 
3.3) times. The dorsal contour is slightly concave on the snout and 
weakly convex between the snout and the first dorsal. The snout 
closely resembles that of C. argentatus; it has a slightly acuminate 
tip, which is on a horizontal passing below (or through) the lower 
margin of the pupil. The proportions of the snout follow: preocular 
length, 2.4 (2.3 to 2.55) in head; preoral length, 3.15 (2.8 to 3.3) ; 
width of snout at front of orbits, 3.5 (3.33 to 3.5); width across 
snout at anterolateral angles, 1.2 (1.1 to 1.3) in the distance anterior 
to the angle. The occipital ridges diverge strongly toward both 
ends: the least distance between them is contained 3.0 (2.9 to3.8) times 
in the interorbital; the ridge is followed by a naked groove which 
bounds above that area of scales which covers the large sensory canal 
anterior to the origin of the lateral line. The postorbital ridge 
curves slightly downward behind the preopercular angle. Length of 
the orbit in the type-specimen (93.3 mm. to anus), 4.65 in head, 1.9 in 
snout, 1.7 in posterbital; orbit in specimens 60 to 77 mm, to anus, 
4.0 Pa 4, 15 in head, 1.65 to 1.75 in snout, 1.35 to 1.5 in postorbital ; 
orbit in paratypes from 50 to 57 mm. to anus, 3.9 in head, 1.6 in 
snout, 1.3 in postorbital. The least interorbital width fotene to 
