ADDENDA TO MARSIPOBRANCHII, ELASMOBRANCniF, ETC. 65 
genus Plafyrrhina, tliis species proves to be viviparous. It is, there- 
fore, referred to the Bhinohatidcv, the oviparity of Raiidm being the only 
character distinguishing the two families. 
“ (^Plali/rJiina triseriata Jordan & Gilbert, Proc. Ui»S. Nat. Mus. 1880, 33.) 
“45 (d). K. leoJBgleaoSMS Garmau. 
‘•Grayish, with small paler spots, uniform below. Outline similar to 
that of R. productns. Snout long and narrow, its ridges close together 
throughout. Eyes large, twice as large as spiracles. Interorbital space 
narrow, concave, as wide as nostrils or the interspace between them. 
Distance between outer angles of nostrils more than half the snout. 
IMouth straight, its width not quite twice the interorbital space. Dorsal 
and preocular spines very small ; 5 larger spines on tij) of snout. Su- 
praocular and scapular spines obsolete. L. 22 inches. Width 3 in length ; 
tail about 2; snout to the mouth Coast of Florida. {Garman.) 
“ (Garman, Bull. Mus. Comp. Zool. 1880, 168.)” 
Page 47, genus Rasyatis : The following synopsis of the American 
species of the genus Rasyatis, or better Rasihatis, has been prepared at 
our request by Mr. Samuel Garmau, of the Museum of Oomiiarative 
Zoology. It was received too late for insertion in the text. We, there- 
fore, iilace it here in the form in which it was written by its author : 
THE AMEEICAl)! SPECIES OF THE GENUS DASIBATIS.* 
By Samuel Garman. 
Tail more than twice the length of the disk, 
keeled on the top ; 
snout acute, pointed ; tail very long, round hiVerculata 
snout not prominent ; tail compressed longa 
round on the top, compressed, with lateral series of large tubercles; 
snout not prominent ; anterior margins slightly sinuous centrura 
snout prominent, with a series of long, narrow, depressed tubercles on the 
middle of th© back laia 
Tail less than twice and more than one and a half times the length of the disk, 
Avith two expansions ; 
disk subcircular ; snout prominent sabina 
disk quadrangular ; snout hot prominent sayi 
keeled on the top, with an expansion below ; with three series of tubercles on the 
shoulders hastaia 
Tail less than one and a half times the length of the disk, 
Avith two expansions ; 
mouth with tiAm papilljE brevis 
mouth Avith three ii.apillm dipterura 
*Dastjbatus Walbaum, Kleinii Ichthyol. Enod. sive Index rerum, etc. 1793, 35: type 
Baja pastinaca L. This use of the name has precedence of ^‘JDasyatis^’ Raf. 
Bull. Nat. IMus. No. 10 5 
