390 FISHES OF KAMCHATKA AND JAPAN— BEAN ^ BEAN. 



jaw very slightly protractile. Oill membranes broadly united, free 

 from the isthmus. Scales very small, cycloid, with concentric stri.t ; no 

 lateral line. 



Dorsal fin as in Pholis, beginnin<? over the end of the head; analloiif,'- 

 and low, composed of two very slender, short spines, and many rays; 

 caudal rather long and rounded, barely separate from dorsal and anal: 

 ])ectorals moderate, on a broad base; no ventrals. Intestinal canal 

 slender and short, with a few i)yl()ric co'ca of une(]nal size. 



PHOLIDAPUS GREBNITSKII, new species. 

 (Phito XXXIV.) 



This Xiphidiine blenny strongly resembles some species of Pholis, but 

 the body is deeper and shorter, and the ventrals are wanting. Thr 

 species is based ui)on two individuals, Xo. -tT.jG-l, U.S.X.M., from Yesso. 

 Japan, where they were obtained by ]Mr. X. Grebuitski. 



The specimens are 141 mm. long, including- caudal; lUO mm. to base 

 of caudal. The head (22 mm.) is equal to the greatest depth of body. 

 The eye is slightly longer than the snout and one fourth as long as tlic 

 head. The interorbital space is narrow, two-thirds of the length ot 

 the eye. 



The naked head resembles that of PhoJis; its length is contained 

 about oi times in total length without the caudal. The inouth is small 

 and very oblique; the mandible is slightly included and has a well 

 developed lip. The maxilla is ])artly concealed under the i)reorbital 

 bone: it does not quite reach to below the anterior margin of the pupil. 

 The anterior nostril is midway between the eye and the tip of the inter 

 maxilla. Seven mucous pores around the orbit; three on the ])reorbital 

 bone. The pore in the origin of the semicircular dark band iiround 

 the nape is continued backward by a series of (> similar ones ending 

 near the upper angle of the gill opening. A series of 10 or 11 pores 

 beginning near the front of the chin on each side, extending backward 

 and curving upward to the upper anterior edge of the operculum. 

 The gill membranes are broadly united, but they are not joined to the 

 isthmus. 



The dorsal origin is over the end of the head; the lin is low, and 

 consists of si)ines, the longest and st>rongest in the posterior third 

 being slightly longer than the eye. The distance of the vent from 

 the tip of the snout contains the head length 2§ tinu's. Tlie anal is 

 slightly lower than the dorsal, the rays longest posteriorly. The caudal 

 is rounded, and is barely separated from the dorsal and anal. The 

 pectoral base is broad, and the fin is two-thirds as long as the head. 



The intestine is slender, and is more than twice as long as the head. 

 Stomach short, pear-shaped, with C slender jjyloric cceca of uneciual 

 length, the longest about twice as long as the eye. 



The body is completely scaled, the scales very small, cycloid, closely 

 imbri(;ated, with numerous concentric stria', and they extend halfway 

 up the membrane connecting the dorsal spines. 



