1910.] NATURAL SCIENCES OF PHILADELPHIA. 473 



shows an example from Wood's Holl with first dorsal origin well 

 posterior, or about opposite posterior basal fourth of ventral. Jordan 

 and Evermann pointed out differences between Atlantic and Pacific 

 forms from North America, stating the former to be nearly uniform 

 black, rarely spotted, and having the first dorsal over middle of ven- 

 trals, all of which can be found in my examples noted above from the 

 Pacific. At the same time they reproduce Goode's figure and my 

 Soquel specimen, the former certainly more in agreement with some 

 of my Pacific examples, and the latter approaching nearer that of 

 Storer. The question of spotted coloration does not seem to me 

 reliable. 



Narcine brasiliensis (Olfers). 



One from Key West. 



DASYATIDJE. 

 Urolophus halleri Cooper. 



One from San Pedro, Cal. 



Urolophus nebulosus Garman. 



One from San Diego, Cal. 



Urolophus jamaicensis (Cuvier). 

 Two, from Florida and Cuba. 



Urolophus mundus (Gill). 



Three young from Panama. 

 Taeniura lymma (Forskal). 



One from Padang, Sumatra. 



Dasyatis uamak (Forskal). 



Three from Padang, Sumatra (one now in Stanford University). 

 Dasyatis centroura (Mitchill)? 

 Young without data, most likely this species. 



Dasyatis aldrovandi (Risso). 



Three tails, probably this species, from the Mediterranean. 



Dasyatis akajei (Mailer and Henle). 



Four young from Onomichi, Japan. 



Dasyatis say (Le Sueur). 



Four from Delaware Bay off Green Creek, wrongly thought by me 

 to be D. centroura. 5 The rediscovery of the present species in New 

 Jersey is of considerable interest, as it has not before been correctly 



5 Proc. Acad. Nat. Sci., Phila., 1909, p. 407. 



