ADDENDA TO MARSIPOBRANCIIII, ELASMOBRANCHII, ETC. 59 
“ 1§ (h). S. veMtriosiam Garmau. — Swell Shark. 
“Grayish, tinged below with yellowish. Back with black cross bars, 
upper parts with large round black spots ; sides also with small whitish 
spots. Head very broad and depressed, broader than long, and not half 
as deep as broad. Snout very blunt, projecting little beyond the mouth. 
Month very broad, little arched, with only a trace of labial told. Teeth 
similar in both jaws, small, tricuspid, in about four series, fj in number. 
First dorsal beginning over middle of ventrals ; second dorsal beginning 
behind front of anal and ending before end of anal. When caught, this 
shark inflates its stomach with air, like the Tetrodontidce., till its diam- 
eter is one-third its whole length. It will then float belly ui)ward on 
the water. L. feet. Monterey to Chili; very abundant in Santa 
Barbara Channel. A small, voracious shark, often taken in lobster- 
pots. 
“ (Garman, Bull. Mus. Comp. Zool. vi, 167: 1880, ? ? Scyllium laticeps Aug. Dum^ril, 
Rev. et Mag. Zool. 1853, 84, pi. 3, fig. 2: Cephaloscyllium laticeps Jordau & Gilbert, 
Proc. U. S. Nat. Mus. 1880, 40.) ” 
Page 19, in key, after “a”, add: 
“y. Embryo not attached to the uterus by a placenta; teeth all obtuse, rvithout basal 
cusps Mustelus, 14. 
“yy. Embryo attached to the uterus by a ^rlaceuta ; some of the teeth pointed, each 
with one or two basal cusirs Rhinotriacis, 14 (5).” 
After “/” add : 
First dorsal nearer ventrals than pectorals ; emibryo not attached to the uterus by 
a placenta Caecharinus, 18. 
‘^zz. First dorsal nearer irectorals than ventrals; embryo attached to uterus by a pla- 
centa Eueamia, 18 (&).” 
After add: 
“fff- Teeth in umrer jaw serrate at base, in lower jaw entire Hypopriox, 19 (6).” 
Page 20: Erase “20. Mustelus calif ornicus^^ which is doubtless iden- 
tical with Mustelus Mnnulus, and add : 
“ 14 (&).— RMIIVOTRIACIS Gill. 
“ {Plenracromylon Gill, 1864.) 
“(Gill, Proc. Ac. Nat. Sci. Phila. 1862, 483 : type Bhinotriacis henlei Gill.) 
Characters of the genus Mustelus.^ except that each embryo is at- 
tached to the uterus by a iflacenta. The teeth are sharper, some of them 
being pointed, and with one or more short basal cusps. . Warm seas. 
snout ; rpsia/.c<;j Triacis.) 
“20,— R. henlei Gill.” 
(See text, “22. T. lienleV^) coast of California; not uncommon.) 
