ICHTHYOLOGICAL COLLECTIONS OF THE ALBATROSS. 449 
LETHOTREMUS gen. nov. (CYCLOPTERID.) 
Differing from Eumicrotremus in the total absence of the bony plates and in the 
absence of pores on sides of head or body. 
109. Lethotremus muticus sp. nov. (Plate 31.) 
Represented by three young specimens, the largest 30 mm. long. They closely 
resemble in form, fin-rays, and general appearance Eumicrotremus orbis, but differ, in 
addition to the generic characters already stated, in the much larger eye, the lower 
spinous dorsal, and the extreme reduction of the posterior nasal tube. In young 
specimens of L. orbis, the posterior nasal tube is much longer than the anterior, and 
equals half the diameter of the eye. In ZL. muticus both tubes are short and the 
posterior is little more than an elevated rim to the nasal opening. 
Dorsal vul-11; anal 10; pectoral 23. Depth 2 to 24 in length; head 2} to 2}. Eye 
very large, 24 to 24 in head, equaling interorbital width. In JZ. orbis of equal size 
the length of the slit is slightly less than its distance from upper base of pectorals. 
Diameter of ventral disk five-sixths length of head, equal to width of mouth. No 
barbels or filaments. Origin of spinous dorsal slightly in advance of gill-slit. The 
distance between dorsals equals half the diameter of the eye. Origin of anal under 
that of second dorsal. No notch between upper and lower portions of pectoral fin, 
the lower rays thickened but not lengthened, the length of upper ray equaling that 
of snout and eye. Vent separated from disk by slightly more than half its distance 
from front of anal. 
Color in spirits: Brownish above, white below, the upper parts finely freckled 
with small black specks. 
Three specimens from stations 3223 and 3258, near Unimak Pass, depths 56 and 70 
fathoms. The naked specimens from the Atlantic, reported on by Dr. Giinther, 
under the name Humicrotremus spinosus, are probably referable to this genus. 
Family BATRACHIDA:. The Toadfishes. 
110. Porichthys notatus Girard. 
Near Point Reyes, California; station 3351; depth 51 fathoms. 
Family TRICHODONTIDZ. 
111. Trichodon trichodon (Tilesius). 
An adult specimen was taken from the stomach of a codfish at station 3260, 
Bristol Bay, 13 fathoms. Others were seined at Herendeen Bay. 
Family BLENNIIDZ. The Blennies. 
112. Chirolophus polyactocephalus (Pallas). 
Two specimens, stations 3213 and 3274, north and south of the Alaska Peninsula; 
depths 41 and 19 fathoms. 
113. Pholis fasciatus (Bloch & Schneider). 
Several specimens of this species have 86 to 89 dorsal spines and 42 to 44 soft rays 
in the anal. The coloration agrees more closely with that described by Cuvier & 
Valenciennes for Atlantic specimens (Gunnellus grenlandicus Cuvier & Valenciennes, 
Hist. Nat. des Poissons, x1, 442, pl. 340). Ground color yellowish gray; base of 
dorsal occupied by 10 or 11 oblong blotches of dark brown which extend to the tips 
of the fins; these blotches each divided upon the fin by a median spot of the ground 
color. The areas of the ground color alternating with these blotches is finely 
speckled with brown, a larger spot of brown usually occupying a median position 
upon the fin. Middle and lower part of sides occupied by vermiculating brown 
lines on the ground color, these vermiculations arranged in more or less distinct 
_erossbars, about 20 in number. They reach to or nearly to the mid-ventral line; and 
' the posterior ones are often continued faintly onto the anal fin. Pectoral and caudal 
F. RB. 93 29 
