290 CONTKinUTIOXS TO NORTH AMERICAN ICHTHYOLOGY IV. 
the middle of the body; aiud fni small; caudal small, forked, its central 
])art scaly; ])ectoral rather narrow; adijjose llii small, fringed, present 
in the young, but usually disapi)earing with age. llranchiostegals 3 or 4. 
l‘seudobrauchia‘ well develoj>ed. Air-bladder large, silvery. Xo ]»yloric 
cicca ; mucous mend)rane of stomach pai)illose. Atlantic Ocean, in deep 
waters. small; mouth.) 
17 1 . Roiiih. 
“This lish a])pears to be intermediate between Argcniina and Micro- 
stoma^ having the dorsal tin inserted for the greater part in advance of 
the ventrals, and a series of tine teeth in the lower jaw. Teeth on the 
vomer, none on the tongue. Adipose fin conspicuous. The height of 
the body is oue-half the length of the head and one-tenth of the total.” 
r>. 3; 1). 11; A. 10; V. 10. (Giintlicr.) Greeidand. 
(Microntomiis gwiilandiciis Rciiili. Vidensk. Selsk. Naturv. Matliem. Afliandl. viii, 
Ibll, Ixxiv; Giiather, vi, 205.) 
13?>.— .7IAU.,1L«TIJS* Cuvier (young). 
Form and dentition of Tlialciclithijs. Xo trace of scales in the known 
examples, which are immature. Dorsal tin well backward over ventrals, 
its insertion nearer the tip of the caudal than the snout; adipose fin long 
and low, its height much less than the length of its base, its base little 
shorter than that of the dorsal; pectoral rays in increased number; 
anal moderate. I’seudobranchhe well developed. Branchiostegals 9. 
I'yloric ca'ca 4. 
I7JJ. 31. vilSosBBS (Miiller) Cuvier ((/oi(H_7). 
Translucent whitish; a silvery lateral stripe; upper regions closely 
j)unctate. Eye a little shorter than snout, 4 in head. ^Minute teeth in 
both jaws; middle of tongue rough; maxillary reaching front of pupil. 
Ventrals and pectorals about equal in length to the longest dorsal ray, 
which is 7 times in length of body; ventrals inserted below first ray of 
dorsal, not reaching vent; sjiace between dorsal and adipose fin two- 
thirds length of head; length of adipose tin more than twice its height, 
two-thirds base of anal. Head 4; depth 0. D. 12; A. 21; Y. 8; P. 10. 
li. 4 inches. Behring’s Straits. Probably develoiied scales when adult. 
*As those pages arc passing through the press, we learu from Dr. Bean that the 
fish here deseribed, eollected by him in Behring’s Straits, is not a distinct geuns and 
species as .at first supiiosed, hnt the yonug of MaUotus villosus. Wo therefore sup- 
])ress the jiroposed generic and specific names, letting (he description remain, it being 
too late to cancel the latter. 
