256 



PROCEEDn'GS OF THE NATIONAL MUSEUM. 



VOL. 39. 



32;'anal II, 9 or 10; scales in lateral line 60, above in longitudinal 

 series 65, below 72, in transverse series 5 or 6 between insertions of 

 dorsal and lateral line, between lateral line and ventrals 12 or 13. 

 Gill rakers 9 + 18 (fully developed), length about two-thirds diameter 

 of eye. 



Body not greatly elongate, compressed, its width twice in its depth. 

 Dorsal profile evenly arched, that along back somewhat more grad- 

 ually than from snout to dorsal; ventral profile not much arched; 

 abdomen from ventrals to anus 3 in length of body without 

 caudal; caudal from anus to last vertebra 3. Head cavernous, 

 compressed, its width 1-^ times its depth; snout rounded, not strongly 

 convex in profile nor overhanging premaxillaries; preorbitals but 

 little convex; jaws equal or lower somewhat shorter, narrow, 

 included anteriorly and laterally so that teeth of upper jaw close out- 

 side of lower jaw; maxillary extending to below posterior border of 

 eye; mouth cleft, very oblique, at 40° or 45° to body axis; premaxil- 



FlG. 3.— SCI^NA MANCHURICA. 



laries in level of lower edge of pupil and above that of orbit. Teeth 

 in two rows in upper jaw; the outer of small hooked teeth larger 

 anteriorly ; the inner bristle-like, in a band posteriorly in one row at 

 middle of upper jaw, lacking in anterior third, but present again in a 

 single row at junction of premaxillaries. In lower jaw but one row 

 of hooked teeth somewhat larger than those in the upper jaw, well 

 spaced and larger posteriorly, small anteriorly save for a larger one 

 on each side of the mandibular symphysis; between these a few 

 small bristle-like teeth. Border of preopercle membraneous crenate, 

 set with minute, radiating, flexible spinules. Opercle with two 

 points, close together, the upper much smaller, indistinct. 



Dorsal spines weak, highest from third to fourth and fifth, the 

 former 2-^ in head, the last adnate to the first soft ray and nearly 

 equal in length to the next to last. Dorsal rays 3 in head, of nearly 

 equal lengtli throughout, save the last two, which are somewhat 

 shorter. Base of spinous dorsal 5| in body, that of soft dorsal 2J. 



