460 



THE FUE SEALS OP THE PKIBILOF ISLANDS. 



dorsal. In these dark markings can be made out small roundish or polygonal spots of 

 of black, separated by reticulating lighter lines. Under side of head and body whitish, 

 the lower lip dusky ; breast minutely black speckled ; dorsal mottled light and dark, 

 without definite color pattern ; anal whitish, with oblique series alternately of small, 

 roundish spots, and of still smaller dots 5 caudal with a dark crossbar at base, and two 

 or three more or less irregular ones on outer half; pectorals with a large black area at 

 base, the ijosterior portion with elongate spots forming ill-defined cross series, the 

 lighter area with smaller dark markings of varying shapes; ventrals whitish, with 

 two or three faint dusky crossbars. 



Specimen 117 mm. agreeing well with types. The interorbital is narrow and very 

 deep. There is no cross ridge on occiput ; the occipital ridges are very high, com- 

 pressed, knife-like, with serrulate edge. There are three strong hooks on one preopercu- 

 lar spine, two on the other. Each plate of the lateral liue has a central, backwardly 

 directed spine. D., VII-14; A., 13; P., 18; plates 35. Lines of plates converging at 

 interspace between dorsal, then again at end of second dorsal. 



91. Gymnocanthus pistilliger (Pallas). (Plate LVIII.) 



Petropaulski; station 3646, oft' Eobben Island, 18 fathoms. liecorded by Dr. 

 Gilbert from many specimens from Bristol Bay, and by Ur. Bean from Kyska, Point 

 Belcher, and Caije Tchaplin, Siberia. Mr. Scofield found it at Port Clarence, and 

 Dr. Stejneger on Bering Island and at Petropaulski. 



No males are included in the number taken. The females differ from those we 

 have examined from Bristol Bay in having the top of head more extensively plated, 

 the rough plates extending onto middle of interorbital space, or in one specimen onto 

 snout. The preorbital ridges are less regular and have lower tubercles. The speci- 

 mens indicate an approach therefore in this respect to O. galeatus. The fin rays are 

 as previously given. In eight specimens they are as follows : 



Number of ray 



Number of specimens. 



Dorsal 

 spines. 



IX X 



1 7 



Dorsal rays. 



U 15 16 

 16 1 



Anal rays. 



16 17 

 3 5 



92. Gymnocanthus galeatus Bean (Plate LIX). 



Seined in Captains Harbor, recorded by Dr. Bean from the same waters, and by 

 Dr. (lilb^rt from Chernofsky, all tliese localities being about the island of Unalaska. 

 Dr. Bean records it from Unalaska and from Cape Sabine in the Arctic, and Mr, Sco- 

 field from Point Barrow. 



Many very young specimens, about 35 mm. long, were also collected by Mr. Wil- 

 liam Palmer on St. Paul Island. In these, the preopercular spine is simply furcate 

 at tip, without trace of the upwardly directed processes characteristic of the adult. 

 The roughened plates on head are also undeveloped. Fin rays are: D., XI, 16; A., 19; 

 P., 20 or 21. 



93. Argyrocottua zander! Herzenstein. (Plato LX.) 



Three specimens of this beautifully Tnarked cottoid were taken in Shana Bay, 

 Iturup Island. Originally described from Sakhalin Island. 



The branchiostegal membranes are widely joined across the throat, narrowly 



