276 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvn. 



This species is nearest to M. 'polyacanthocephahix oi Kaiiiehatka and 

 Alaska, Imt differs in color; in having- much higher, sharper ridges 

 and spines on top of head, a larger eye, and in the more scattered 

 warts on head. 



This description is taken from the type which was collected at the 

 Aino village of Edomo, near Mororan. A single cotype was collected 

 at Hakodate, No. 50919, U.S.N.M. 



The type is 19 cm. in length and is numbered 7T0T, Ichthyological 

 Collections, Leland Stanford Junior University Museum. 



24. MYOXOCEPHALUS NIVOSUS ( Herzenstein). 



Coitus nivosiis Herzenstein, Melanges Biologiques du Bull. Acad. Imp. Sci. 



Petersb., XII, 1890, p. 113; St. Olga Bay. 

 Myxocephalus nivosiif^ Jordan and Gilbert, Fish. Bering Sea, in Eept. Fur Seal 



Invest, for 1896-97, 1899, p. 461.— Jordan and Evermann, Fish. N. and M. 



Anier., II, 1898, p. 1984; Iturup Island. 



-2 



"^"^ ^fic'^-^ 



iM^ 



•w^-s. 



iW 



Fig. 19.— Myo^ocephah's Nivosrs. 



Head 2j in length without caudal; depth 1^. Dorsal lX-15; anal 

 12; lateral line 36. Eye .5^ in head; interorbital width 8; snout 4^; 

 maxillary ^1^\ upper preopercular spine 1\\ pectoral If; first dorsal 

 spine 1|; third dorsal spine 3; longest dorsal rays 2f ; longest anal 

 rays 3|; ventral 2|; caudal 2. 



Head long- and comparatively narrow, not depressed; about as deep 

 as wide; body a little compressed behind tip of pectoral. Postorbital 

 part of head equal to twice leng-th of snout and once vertical diameter 

 of eye. Interorbital space wide and rather deeply concave. Maxil- 

 lary reaching to posterior border of e3^e. Lower jaw included; a 

 knob developed at symphysis. Teeth small, conical, in rather wide 

 bands on jaw and vomer; the distance across vomerine patch equal to 

 vertical diameter of eye. Nasal spines moderate, not very sharp. 

 Ridges on each side of vertex continuous, slightly l)roken but without 

 tubercles; the}'' converge toward occiput. Top of head between 

 ridges rather deepl}' concave. The usual ridges outside of these are 

 low and short. There is no trace of a superorbital spine, of digitate 

 spines behind eye, or of occipital spines. A pair of short, simple 



