[TBIBUTIONS TO v;:Tii AMT.IMCAN ICHTHYOLOGY iv. 



Cnvier.) 

 ' Bafini ique, Caratteri li Almni \n..vi Cem-ri, etc. I^IO, ll: type Squalits 



LilllKIMlS.) 



r.ranchial apertures gig on each side; otherwise essentially as in Hep- 

 li-iinrli'nix. Two .xpecies knu\vi). (^, six ; r/"?, bend or sinus; for gill- 

 openin 



II (6), El. coriillis Jordan & Gilbert. Shord-noscd Shark. 



Color almost black, nnspot led ; a grayish lateral streak. Ilcail 

 lam--, broad. dcinvsscd and blunt. Xo median tooth in upper jaw. 

 Aliont >i\ pointed treth in front of n]per jaw, all entire and without 

 i..i-al ensps. N-\t three teeth with entire edges and a single cusp on 

 tin- miter inaruiii. lleinaininy: teeth of upper jaw serrate on the inner 

 mar-in, and with two or more basal cusps on the outer. Median cusp 

 of I..U.T jaw vn\ small. Other teeth with six cusps, the first the 

 largest, tin- othn> iv-ularly smaller, the inner edge in the adults ser- 

 rated. Tail Ion-', t \\iee as long as head, a little less than one-third the 

 total Icii-th. Scales on upper edge of tail enlarged. Monterey to Pu- 

 grt's Sound. 



"(Ji.nlnn A- Cilhrrl. 1'mr. U. S. Nat. Mus. 1880, 352. ) 



>:*2. IIEPTRANCIIIAS U:iiim-s.,ii.-. 

 " (Xotorliynchus Ayrcs.) 



i;;iliii<^<|ii', Cariitti-ri di Alcuiii Xuovi Cifiicri, etc. 1810, 13: typo Squalus cincrcns 

 ( init'lin.) 



II opciiin.Li> -^' ''' n "M each side. Three species known. ( t r -r, seven ; 

 . Us. The change of this name to " ncj>tan<-Jtun" is hardly justi- 

 fiable.) 



"12. D9. c:i:irtil:D(ns -.-::inl. 



ray. \\ith some round black spots, larger than the pupil, 

 r.iilin -IMIM-IV placed. Head rather depressed; the snout broad, 

 rounded : the nostrils near its tip ; spiracles large, nearer the gill-opon- 

 than iln- eye : a Ion- furrow at the an-le of the month. "No median 



"I n in hit IMC nClc-n lT(|llin' tlh' Ml 1 i.st i t 111 inll i'.r 111!' ll.'linr nf 



tin- tNjiirnl j:i-iiii- nl' a lainily <>r MHIIC li -.>-> familiar l>ut earlier name, as Ifrxunchus 



r Oiinntus^in, iinfii/imiiin for Tri/i/oii, i-tc. It is probably un- 



i-lian-i- \\ i II -Kijn\\ n t'atnily IIJIIIH-S In an-onl \\ iili these ehan^es. Among 

 niir liarl.s it i^ iierh:i|i- In ltd I., n-iain tin- nlil 1'aniily names nilnnlnnpidiili'; .\<>!itlani- 



ntiilil. in^le.nl i.f t',ii-i -liiiriin'i: . II' .i<n,< 7i ,'/. , and //. /. I'liiliilitiilir, as jiivrn ill 



I hi ir \i. Tin- name i'nr< Imriiiln , IIMI-I! hy various aul hors for t lie t;<i1rorrhinida! t is in- 

 iln name ',./-,;/ /KM rightfully lielongs t a ^einis of another family. 



