60 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 



" 20 (h). R. leevas (Risso) Jordan & Gilbert. 



"A small shark resembling Mustelus Mnnulus and B. henlei, but differ- 

 ing from the former in the dentition and in the attachment of the em- 

 bryo to the uterus by a i)lacenta, and from the latter in the blunter 

 teeth. Only those in the i)osterior part of the upper jaw have a basal 

 cusp, and these usually- but one only. . This species is found on the 

 coast of Eurof»e and Africa, and is accredited to our Atlantic fauna by 

 Giiuther (viii, 386). 



"(Mustelus Iccvis Risso, Europe M6ridiouale, iii, 127 : Mustelus Icevis Giinther, viii, 385: 

 Pleuracromylon laivis Gill, Proc. Ac. Nat. Sci. Pliila. 1864, 148 ; not of Jordan & Gilbert, 

 Proc. U. S. Nat. Mus. 1880, 52, =^ Rkinotriacis Jienlei.)" 



Page 21: Galeorrhinus galeus, the "Oil Shark", is very abundant on 

 the coast of California, especially southward. Its teeth are coarsely 

 serrated on the outer margin near the base only. Galeocerdo tlgrimis 

 also ranges northward to San Diego on the Pacific coast. 



Pages 22 : CarcJiarmus glaucus occurs on the coast of California. 



Page 22 : Instead of " ** " insert : 



" 1§ (6).— EULAMIA Gill. 

 " (Gill, Ann, Lye. Nat. Hist. N. Y. 1861, 401 : type Carcharias lamia Risso.) 



" Body rather robust, the head broad and depressed ; mouth inferior, 

 with the teeth in both jaws strongly serrated in the adult; less so or 

 entire in the young; those in the upper jaw broad, those below narrow, 

 straight, and nearly erect. No spiracles. First dorsal large, placed not 

 far behind pectorals. Pectorals falcate. Second dorsal small. Em- 

 bryos attached by placentae to the uterus as in ScoUodon and Rliinotria- 

 cis.* (In CarcJiarinus placentae are not developed, according to Auguste 

 Dumeril, Hist. Nat. des Poiss. i, 244.) Species numerous, (sy, well ; 

 Xa/xca, Lamia or Lamna, a fabulous monster, from Xat/j.v7, devouring 

 hunger.)" 



Page 22 : The species of '■'■Eidamia'''' should stand as : 



"26. E. ohscura (Le S.) Gill", "27. E. tnilberti (M. & H.) GiU", and 

 " 27 (&). E. lamia (Eisso) Gill ". 



Page 23: Under "^. Z«mm" add: 

 "SY (h). E. lamia (Risso) Gill.— Bay Shark. 



"Body robust, the back elevated. Head broad and flat; the snout 



* So far as known to ns, the embryos in all our ovoviviparons sharks except Eula- 

 mia, Scoliodon, and lihinotriacis are without placenta. 



