64 coNTKinrnoxs TO NORTH AMERICAN ICHTHYOLOGY iv. 



with shagreen, made of triangular depiessiblc asperities. IJegion from 

 tin- nostrils td tin- slimmlcr girdle smooth, except the lower lip. A tew 

 other small naked areas below. I'pperhp developed. Teeth ;. Color 



brown, mottled and barred with blackish; a black blotch on hinder part 

 of pectorals below. Tail rather shorter than disk. First dorsal not far 

 behind \ ( utrals. Snout one-fifth the length of disk, twice the interor- 

 bital space. San I >iego P,a\ : abundant. Only young specimens known, 

 but it is probably ovoviviparoiis and therefore not a h'uloul. 



"(I'ltitiirliiiKt exasperate .Ionian A: Gilbert, Pror. U. S. Xaf. Mns. 1880, 32: Zapteryx 



I. .i.l. in A. (.illin-t, Pror. U.S. Nat. Mu.s. 1880, M: Tryyonorliina i.ni^x rata 

 (iariuaii. Hull. Mns. ( '(imp. Zonl. 1-n, 17(1.) 



I. . K. triseriatus Jordan & Gilbert. 



"Disk broad, ovate, broader than long. The snout very bluntly 

 rounded, not projecting, the angle formed by the pectorals anteriorly 

 very obi use ; anterior outline of the pectorals slightly convex, not undu- 

 lated. Tail very stout, much, longer than the disk, its edges with, a 

 broad fold, broader than in E. exaxpcrdiiis. Pectoral fins extending 

 almost to the tip of the snout; rostral ridges wide apart, converging, 

 inclosing a triangular area. Eyes small, wide apart, the broad spira- 

 cles close behind them. Caudal flu well developed above and below. 

 Dorsals similar, their posterior free margins very convex. Mouth 

 broad, its width nearly equal to its distance from tip of snout, a deep 

 cu -a.se passing around it behind, in front of which the lower lip has three 

 folds of skin ; upper lip not developed, a fold of skin passing from the 

 angle of the month on either side to the inner angle of the nostrils, 

 thence .straight across, inclosing a depressed trapezoidal Z\-shaped area, 

 bound below by the curved outline of the upper .jaw. In this are three 

 GTOSa lol.i.-, of >kin. Teeth ;.;;;. (.Jill-openings narrow*. Skin every- 

 where, above and below, covered \\ it h line shagreen. I he pri civics coarser 

 on the anterior outer margin of I he pectorals ( ^ ), where are two or three 

 rou> i.i' retrorsc spines. Four strong spines on the tip of the snout, 

 forming a rhombic figure; four or live spines around each eye. A long 

 series of \n \ Miong spines along the median line of the back and tail, 

 and a series of similar ones on each side of the tail ; a single strong spine 

 "' the outer edge of the* shoulder-girdle and two between this and the 

 iMi-dian series. Color light olive brown, without distiucl markings. L. 2 

 . Breadth of disk one-tenth more than its length; tail usually half 



longi-r than dM, ; MIOIII two-ninths of length of disk, not half longer 

 than \\idih of inieroi bital are.i. Coast of California from Point Concep- 

 t-ion southward: abundant. In spite of its resemblance to the limuid 



