ICHTHYOLOGICAL COLLECTIONS OF THE ALBATROSS. 433 
spines. The maxillary is contained 3 times, not 3}, in head. A distinct slit exists 
behind fourth gill-arch. The origin of the spinous dorsal is above the middle of 
opercle, not over its posterior portion. The lower portion of pectoral fin has its rays 
very much exserted and somewhat produced, apparently not the case in P. hopliticus. 
Following is a detailed description of our type: 
Diagnosis: Elongate, with slender spinous head. Branchiostegal membranes 
broadly united, free from the isthmus. Preopercular spine simple; a distinct slit 
behind last gill-arch. Teeth in jaws and on vomer and palatines. <A palmate supra- 
orbital cirrus; others present on preopercle. Nasal spine strong. Body thickly 
beset with short, stiff villiform prickles. A series of plates along each side of base 
of dorsals, bearing each a strong spine. Platesof lateral line spinous. Both dorsals 
and the anal fin very long. Caudal rounded. Pectorals with the lower rays simple, 
exserted, produced. Ventrals broad, 1, 5. 
Paricelinus is thus not very closely related to any other genus. It seems to stand 
nearest Icelus (rather than Icelinus), but differs widely in the structure of its ventrals 
and pectorals, in the very spinous head, and in the nature of the body covering. 
Dorsal x111-19 ; anal 23; pectoral 15; ventral1,5; lateral line 43 on right side, 
44 on the left; branchiostegals 6. Very slender and elongate, the ventral line 
straight, the dorsal outline descending rapidly forward to the slender sharp snout 
and declining very gently backward to the comparatively short and compressed 
caudal peduncle. Body highest at the shoulders, compressed, everywhere deeper 
than wide. Depth 7inlength. Depth of caudal peduncle half its length from base 
of last dorsal ray. 
Head 34 in length, narrow, its greatest width equaling its depth, its profile convex 
above the orbits. Mouth nearly horizontal, the maxillary reaching a vertical mid- 
way between front of eye and front of pupil, 2in head. Teeth cardiform, in rather 
broad bands on jaws, vomer, and palatines. Snout slightly greater than length of 
eye, 3h in head; eye 33. Supraorbital rim greatly elevated, the interorbital space 
a deep narrow groove, with a pair of low, rounded, lengthwise ridges along its floor. 
Interorbital width 3} in diameter of orbit. The anterior half of supraorbital rim is 
smooth, its posterior portion beset with crowded clusters of short, strong spines, 
occupying the upper posterior quadrant of the orbital rim. Three of these spines, 
somewhat larger than the others, lie one on either side, the other in front of the 
supraorbital cirrus. Upper margin of suborbital stay continuous with that of pre- 
orbital, elevated to form a thin knife-like crest which is irregularly serrate, with 
short spinous teeth, the anterior of which are the largest. Between this ridge and 
the eye lies a deep narrow groove. Astrong postocular spine is directed backward, 
followed after an interval by two similar spines on occiput, the two series thus 
formed diverging backward. Nasal spines very strongly developed. The upper 
edge of the posterotemporal is minutely serrated. In advance of this is a series of 
three spines parallel with the occipital series, the posterior one remote from the two 
anterior. Opercle unarmed. Preopercle with three simple strong spines directed 
backward, the middle one on a line with suborbital stay and slightly the longest, 
its length three-fourths diameter of pupil. Branchiostegal membranes broadly 
united, free from the isthmus for its entire width. Gills 3}, a distinct and compara- 
tively long slit behind the fourth arch. Gill-rakers undeveloped, tubercular. 
Body covered with slender, short, villiform prickles, which leave only a very 
narrow naked strip along base of anal, and are continuous over the dorsal series 
of plates, reaching base of the dorsal fins. A narrow band of prickles occupies axil 
of pectorals, behind which is a widenaked area extending downward and backward 
to behind base of ventrals, the two areas separated by a narrow mesial band of 
prickles on belly. Similar prickles cover continuously the occiput, the opercles, 
and the portion of cheeks and preopercles which lie above suborbital stay. A narrow 
lengthwise band of prickles on cheeks below suborbital stay; the lower side of head, 
together with snout and interorbital region, otherwise naked. 
F. R. 93——28 
