2C56 , Bulletin 4.7, United States National Museum. 



colored side. As in other members of this group, the lower jaw is the 

 longer, the upper teeth included. Interorbital space wholly scaled, with 

 a very high, rather sharp ~-shaped ridge. Eyes very large, the upper 

 entering largely into the upper profile, the lower much in advance; front 

 margin of upper orbit on vertical of front of lower pupil; diameter of 

 upper eye 2| to 2* in head. Anterior nostrils of both sides in rather long 

 tubes, the posterior margins produced to form short flaps. Preopercular 

 margins adnate, as usual, concealed by scales. No conspicuous mucous 

 excavations on blind side. Gill rakers weak and rather short, 10 or 11 on 

 anterior of arch. Scales very small, cycloid, in about 165 cross rows, the 

 tubes of lateral line much fewer, not regularly arranged ; over 50 longi- 

 tudinal rows above lateral line. Dorsal beginning over posterior edge of 

 pupil ; fins low, the highest dorsal rays behind middle of body, J length 

 of head; caudal rounded, 1 in head; pectorals 2 in head; ventrals small, 

 each with 5 rays, as in Microstomus pacificus. (Glyptoceplialus cynoglossus 

 and zachirus have 6 rays in each ventral.) Color of eyed side warm 

 brown, darker toward margins, becoming black on vertical fins; every- 

 where on body and fins coarsely blotched with light blue, the marks 

 so arranged on upper and lower thirds of sides as to form 5 broad bars of 

 bluish, alternating with those of the ground color, and corresponding 

 above and below ; lips and branch! ostegal membranes black; blind side 

 dusky brownish. This well-marked species differs from the species of 

 M icrost omus in its much greater depth and bright coloration, and in having 

 teeth well developed on both sides of jaws, as in the species of Glypio- 

 cephalus. Two specimens from the Santa Barbara Channel, in deep water. 

 (Gilbert.) (paQvg, deep; /3io$ t life.) 



Cynicoglossus bathybius, GILBERT, Proc. TJ. S. Nat. Mus. 1890, 123, Santa Barbara Channel, 

 at Albatross Station 2980, Lat. 33 49' 45" N., Long. 119 24' 30" W., in 603 fathoms. 

 (Type in U. S. N. M. Coll. Gilbert.) 



1042. GLYPTOCEPHALUS, Gottbche. 



(FLUKES.) 

 Glyptocephahis, GOTTSCHE, Arcbiv furNaturgscb. 1835, 156 (type saxicola=cynoglossus, L.). 



Eyes and color on the right side. Body extremely elongate, more than 

 twice as long as deep, much compressed. Head very small and short, its 

 blind side with many excavations and mucous cavities in the skull, man- 

 dible, and preopercle. Mouth very small; teeth moderate, incisor-like, 

 broad, equal, close set, in a single series ; no teeth on vomer or palatines. 

 Gill rakers short, weak. Lower pharyngeals narrow, with 1 or 2 rows of 

 conical teeth. Lateral line nearly straight, simple; scales very small, 

 smooth; dorsal and anal very long, there being more than 90 rays in the 

 dorsal and more than 80 in the anal; caudal fin rounded; anal spine pres- 

 ent ; ventral rays 6. Vertebrae in increased number, 58 to 65. Northern seas, 

 in deep water. Thisgenusis one of the most strongly marked in the family, 

 being distinguished from most of the genera by the greatly increased 

 number of vertebras, and from all of them by the remarkable cavernous 



