752 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 



series of conical teeth; 2 large curved canines on \oiuer; liead with 

 several rows of fringed pores: one row along lower line of opercle and 

 subopercle; another along npper edge of cheeks, tliis branching behind 

 and below the orbit, one branch running forwards below the orbit and 

 around the snout, the other vertically downwards behind the maxillary ; 

 a series of fringes behind the lower lip; behind this a series of pores 

 without fringes; a short straight series of pores on each side of vertex; 

 a row of pores along the base of the dorsal fin, curving at front of dor- 

 sal, and terminating at upper angle of opercle; a row below this, not 

 leaching base of jiectoral; a third row does not reach the base of cau- 

 * dal, and is anteriorly strongly curved upwards to base of pectoral; 2 

 concentric series on the abdomen, the outer extending forwards be- 

 tween bases of ventrals. The so-called "shining pores" on the sides 

 are not pores, but bright round pieces of shiny membrane, showing 

 through a translucent skin; each of the spots has above it a pair of 

 fringed flaps with a small pore between them; the rovrs of flaps along 

 bases of doisal and anal fins are without shining spots. Ventrals 

 reaching bases of pectorals, wliich reach to opposite the sixth anal 

 ray; caudal not half length of head; peritoneum black. Head 3§; 

 depth 0. D. 11-37; A. 33; V. I, 2; P. 18. L. 15 inches. Pacific coast; 

 very abundant from Lower California to Puget Sound ; occasionally 

 southward to Panama; also in the West Indies and on the coast of 

 Brazil. 



(Batrachiis porosissimns C. & V. xii, 501: Poricldhys notafus Girard, Proc. Acad. Nat. 

 «ci. Phila. 1854, 141, and in U. S. Pac. R. R. Snrv. Fish. 134; Guntber, iii, 176.) 



Family CXIII.-LEPTOSdOPID^. 



Bo;ly oblong, low, compressed posteriorly, covered with moderate 

 cycloid, imbrir*ated scales; lateral line complete, anteriorly running" 

 along side of back, posteriorly median ; head oblong, nearly plane 

 above; eyes small, superior, well forwaid; suborbital bones enlarged, 

 but without "stay"; nostrils double; opercle fringed; mouth nearly 

 vertical; premaxillaries protractile, not forming the entire edge of the 

 upper Jaw; lips fringed; gill-openings very broad, the membranes sep- 

 arate and free from the isthmus; pseudobranchijie present or absent. 

 Dorsal flu very long, undivided, several of the anterior rays spinous; 

 anal very long, commencing close behind the vent, which is near the 

 breast; caudal diphycercal, free from dorsal and anal; pectorals vari- 

 able, the base i)rocurrent; ventrals jugular, I, 3 or I, 5; vertebrfB more 

 than 10 + 14; pyloric cceca none. Genera about 5; species about 10; 



