620 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
spines, the last spines projecting beyond margin of scales; scales on breast similar, but smaller, with 
shorter spines; those on top and sides of head similar to those on body, but anteriorly on snout their size 
is greatly decreased and the radiating ridges reduced to 2 or 3; lower side of head is wholly naked, 
except 3 or 4 very small scales in a series below preopercular angle. No depressed area or naked pit on 
breast. 
Color light brownish above, under parts lighter, fins blackish; buccal, branchial, and abdominal 
cavities lined with black, scarcely apparent externally. 
Only one specimen seen; it was taken on long lines at Misaki by Kuma Aoki and presented to us 
by Professor Mitsukuri. 
C. anatirodris is closely related to C. tokiensis (Steindachner & Doderlein ) , but differs in its shorter 
snout, much larger eye, shorter maxillary, sharper keels on occiput, and much wider interspace 
between dorsals. There is but one instead of two series of enlarged scales along the lateral ridge of the 
head, and the median series on the snout are not square. 
105. Coelorhynclius tokiensis (Steindachner & Doderlein). 
Maerurus tokiensis , Steindachner & Doderlein, Fische Japans, iv, 283, 1887; Tokyo. 
This species is known to us from the original description only. 
NEZUMIA Jordan. 
Nezumia Jordan, new genus (condylura ) . 
This genus is close to Macrourus, differing from that in the many-rayed ventral fins, the number of 
rays being 13 to 15 instead of 7 to 10, as in all other Macrouridx. 
( Nflzumi , a rat, in Japanese.) 
106. Nezumia condylura Jordan & Gilbert, new species. (PI. 4, fig. 2.) 
Type 195 mm. long, from station 3721, Suruga Bay, Japan, depth 207 to 250 fathoms, No. 50937, 
TJ. S. Nat. Mus. Cotvpes, No. 8551, L. S. Jr. University. 
First dorsal n, 11 (or ii, 10); ventrals 14 or 15, rarely 13; pectorals 21 to 23. Scales in a series 
between lateral line and anterior portion of second dorsal, 10 or 11. Head 6.3 in total length (the tip 
of tail broken) ; depth 7.4. 
The profile is strongly angulated at origin of first dorsal, base of fin very oblique; head com- 
pressed, its sides vertical, its width less than two-thirds its greatest depth. Upper profile evenly and 
gently convex from tip of snout to origin of dorsal, without depression above the orbits. No con- 
spicuous ridges on top of head; snout short, depressed, its tip about on level with middle of eye, its 
lower profile descending very obliquely to front of premaxillaries, from which it is separated by a 
distance equaling width of mouth, and a very little less than length of snout. The snout terminates 
in a median and a pair of lateral tubercles bearing rosettes of short spines; a strong ridge extends from 
its tip alongside of snout and suborbital to below posterior part of eye, dividing a scaly upper portion 
from the naked under side of head; eye large, subcircular, its horizontal diameter half longer than 
width of convex interorbital space, one-third length of head. Length of snout 3.5 in head. 
Mouth is narrow, its width scarcely two-thirds that of head opposite angle of mouth, greatly 
overpassed by snout both anteriorly and laterally; length of maxillary one-third that of head, its tip 
reaching a vertical from behind middle of pupil; mandibular teeth small, cardiform, none of them 
enlarged, anteriorly in a wide band which tapers to a point near angle of mouth; premaxillary teeth 
similar, in a narrower band, outer series not enlarged. Mandibular barbel robust, more than half 
length of mandible, three-fifths diameter of orbit. Preopercular margin nearly vertical, evenly rounded 
at angle, the angle not at all produced backward. Branchiostegal membranes narrowly joined to 
isthmus, with a slight free border posteriorly. Branchiostegal rays 7. Pseudobranchise present, cov- 
ered by the lining membrane of opercles; anterior gill slit much' contracted, its width slightly less 
than half diameter of orbit; posterior gill slit two-thirds the anterior; base of pectorals and ventrals 
and origin of first dorsal approximately in same vertical; second dorsal spine slender, produced 
beyond soft rays but not filamentous, furnished with 10 to 14 long slender retrorse barbs, evenly 
spaced from near base to tip; length of spine about equal to that of head; space between dorsals equals 
length of base of anterior dorsal, which equals diameter of eye; second dorsal low throughout; a 
series of smooth cycloid scales along its base anteriorly on each side; first anal ray under or slightly 
behind last ray of first dorsal; pectorals five-eighths length of head; outer ventral ray filamentous, 
reaching base of the seventh anal ray; distance from base of ventrals to first anal ray equals length of 
snout and half eye; vent about equidistant between ventral base and anal and passed by all the 
ventral rays. 
