622 
BULLETIN OP THE UNITED STATES FISH COMMISSION. 
Color in life light red, abdomen and opercles silvery. 
A. eos is nearer A. rubescens than A. sleindachneri, agreeing with rubescens in weaker spination and 
more complete scaling of head, in shape of scales, and in the presence of 9 instead of 8 dorsal spines. 
The two differ strikingly in outline and in the much shorter dorsal and anal fins of rubescens. In 11 
specimens of eos, not including the type, the fin rays are as follows: Dorsal, 32, 32, 32, 32, 33, 33, 33, 33, 
33, 34, 34; anal, 30, 31, 31, 31, 30, 30, 30, 31, 31, 31, 31. 
In 5 specimens of A. rubescens, from Suruga Bay, Japan (Albatross station 3734), the fin rays are as 
follows: Dorsal, 27, 27, 27, 27, 27; anal, 25, 25, 26, 27, 27. In both species the dorsal spines are 
constantly 9 in number. 
Specimens were taken at the following stations: No. 3858, Pailolo Channel, 128 to 138 fathoms; 
4070, north coast of Maui, 45 to 52 fathoms; 4072, north coast of Maui, 56 to 59 fathoms; 4077, north 
coast of Maui, 99 to 106 fathoms; 4102, Pailolo Channel, 122 to 132 fathoms; 4104, Pailolo Channel, 
123 to 141 fathoms. 
Family ZEIIDE. 
Stethopristes, new genus. 
Related to Cyttopsis and still more closely to Zen Jordan and Fowler. From the latter it differs in 
having the ventral spine greatly reduced and in having a continuous series of carinated spinous buck- 
lers from throat to anus. From Cyttopsis it differs also in having 9 instead of 7 ventral rays. In 
Cyttopsis there are but 3 or 4 spinous plates, confined to the mid-ventral line behind ventral fins, the 
thorax being transversely flattened and without plates. In Zen there are in addition 2 flattened 
plates on the thorax, which is broad and transversely flattened, without trace of keel. In Stethopristes 
the breast is sharply keeled throughout, the ventrals appearing lateral in position. 
Stethopristes Gilbert, new genus of Zeiche (eos). 
Stethopristes eos, new species. Fig. 241. 
Type, 130 mm. long, from Albatross station 3867, Pailolo Channel, between Molokai and Maui, 
depth 284 to 290 fathoms; type, No. 51626, U. S. Nat. Mus. 
Head 40 hundredths of total length without caudal; eye 17.5; least frontal width 10.5; length of 
snout 16.5; length of maxillary 21; greatest depth of body 53; least depth of caudal peduncle 8; length 
of second dorsal spine 11; longest ventral ray 43; longest pectoral ray 14. D. vii, 27, the last ray cleft 
to the base; A. i, 29; V. i, 9; P. 14. Pores in lateral line 82 or 88; 15 oblique rows of scales between 
lateral line and middle of base of soft dorsal; branchiostegals 7. 
Body deeply oval, with back and belly nearly equally curved, depth greatest under middle of 
spinous dorsal ; maxillary reaching vertical from front of pupil, its length measured from tip of snout 
half length of head; teeth minute, in narrow bands in jaws and on von\er, these not more than half 
the width of the bands in the Japanese Zen itea Jordan and Fowler; preorbital of moderate width only, 
half as wide as diameter of eye, concealing only a very little of proximal end of maxillary ; eye very 
large, slightly greater than length of snout; interorbital space and occiput flat, the median portion 
occupied by a deep elongate-oval pit which lodges the long premaxillary processes; each side of occiput 
occupied by a plate with minutely roughened surface, sending forward a triangular process which 
terminates in a spinous point above front of eye; the free margin of this process forms the upper 
orbital rim, and is furnished with minute teeth which increase in size anteriorly; mandibles terminat- 
ing posteriorly in a blunt spinous point and anteriorly in a sharp spinous projection at each side of 
symphysis; other bones of the head smooth, without spines or serrations; branchiostegal membranes 
moderately joined across throat, forming a free fold; gills 3£, the 1 ami me short; no slit behind last 
gill; gill-rakers little developed, short and barely movable, 9 on anterior arch; pseudobranchise well 
developed. 
Anterior dorsal with strong short spines, the fin rounded in profile; second, third, and fourth 
spines about equal in length, two-thirds diameter of eye, the last spine joined by very low membrane 
to first soft ray; soft dorsal low, the rays increasing in length backward; dorsal rays, like those of 
pectoral and anal fins, all simple, unbranched, flattened in their distal half; anal similar to soft dorsal, 
but beginning and ending a little more posteriorly; it is preceded by a simple short strong curved 
spine, connected by membrane with the first' ray; ventrals very large, their tips reaching to' or beyond 
