2146 Bulletin 4.7 , United States National Museum. 



separated by a space -J- as wide as pupil, are 2 barbels directed forward, 

 each as long as the interspace. Maxillary reaching vertical from posterior 

 border of orbit, 2 in head ; bony portion of interorbital width narrow, f 

 diameter of pupil; gill slit narrow, beginning opposite upper pectoral 

 rays, f diameter of orbit; 110 pseudobranchire ; opercle prolonged posteri- 

 orly into a narrow pointed flap; round mucous pores along under side of 

 snout and suborbital, and on under side of mandible. Pectorals of 2 lobes, 

 the lower narrow, containing but 4 or 5 rays, the upper with about 15, 

 1 or 2 rays widely spaced connecting the 2, none of the rays free, the fin 

 inserted high, the upper end of base on a level with upper edge of pupil ; 

 below, the fins are not approximated as closely as usual, the lowermost rays 

 of the 2 fins separated by an interspace as wide as pupil, inserted on a ver- 

 tical through middle of cheek ; dorsal originating slightly in front of 

 gill slit. Vent anterior in position, its distance from front of pectorals f its 

 distance from front of anal fin. In spirits, light gray, dusky along bases of 

 dorsal and anal fins and on the nape; the black lining of abdominal cavity, 

 gill cavity, and mouth can be seen through the transparent integuments; 

 eye also black ; barbels transparent, hence very inconspicuous. Length 

 about 3 inches. Bering Sea ; north of Unalaska Island, in deep water. 

 (barbula, a small barbel; fero, I bear.) 



Rhinoliparis barbulifer, GILBERT, Kept. U. S. Fish Comm. 1893 (1896), 445, Bering Sea 

 north of Unalaska Island, at Albatross Stations 3227, 3325, 3326, and others, in 225 

 to 576 fathoms. 



Suborder CEAKIOMI. 



Scapular arch abnormal, the post-temporal forming an integral part of 

 the cranium and the postero-temporal crowded out of place by the side 

 of the proscapula above or at the edge of the post-temporal. In other 

 respects essentially as in the Loricati, from which the Craniomi are derived. 

 The suborbital stay characteristic of both groups, in the Craniomi is highly 

 developed, its surface forming part of the bony armature of the head. 

 Fishes mostly of the warm seas, often singular in form, the head always 

 with a coat of mail, (updviov, skull; GOJUOS, shoulder.) 



a. Myodome* developed and cranial cavity open in front; prosethmoid and anteal nor- 

 mally connected by suture. Infraorbital chain with its anterior bones excluded 

 from the orbit and functional as rostrolateral, the series covering the cheeks, the 

 third a large buccal bone articulating with the anterior wall of the preopercu- 

 lum ; post-temporal suturally connected with the opiotic and pterotic by inferior 

 processes, and with the upper surface forming an integral part of the cranium; 

 intermaxillaries with the ascending pedicles atrophied and connected with the 

 knob of the anteal by ligament. Postero-temporal contiguous to the proscapula ; 

 ventral rays I, 5; the fins inserted wide apart; gill membranes free from the 

 isthmus. 

 k. Pectoral fin with its 3 lowermost rays detached as feelers ; teeth present. 



TRIGLID^E, CLXXXIV. 

 bb. Pectoral fin with its 2 lowermost rays detached as feelers; mouth toothless. 



PERISTEDIID^E, CLXXXV. 



567-5Q2 ) skeletal cliarac ters here given are taken from Dr. Gill. ( Proc. U. S. Nat. Mus. 1888, 



