UNIVERSITY OF CALIFORNIA PUBLICATIONS 



ZOOLOGY 



Vol. 6, No. 2, pp. 11-31, text-figures 11 February 17, 1909 



CONTRIBUTIONS FROM THE LABORATORY 



or THE 



MARINE BIOLOGICAL ASSOCIATION OF SAN DIEGO 



XXIV 



THE LEPTOMEDUSAE OF THE SAN DIEGO 

 REGION 



BY 



HARRY BEAL TORREY 



The Leptomedusae of the San Diego region are represented 

 in the collections of the .Murine Biological Association of San 

 Diego by eleven species which, with one exception. Aequorea 

 cot rulesct us (Br.), appear not to have been previously described. 

 This unusual proportion of new species is to be accounted for 

 largely by the fact that of the few papers concerned with Pacific 

 Coast medusae none deal with the medusae of the San Diego 

 region. Pewkes I 1889) collected a few species at Santa Barbara, 

 but do Leptomedusae. Chamisso (1821) collected but one me- 

 dusa, Aurelia labiata, in California waters. Eschscholtz (1829) 

 obtained two Leptomedusae, Polyorchis penicillata and Aequorea 

 rilinhi, on the Pacific Coast between 41° and 51° N. Lat. Agas- 

 siz (1865) found no Leptomedusae except Polyorchis penicillata 

 south of the Gulf of Georgia. Murbach and Shearer (1903) 

 described six Leptomedusae, namely. Than maul las cellularia, 

 Polyorchis ndnuta, Proboscidactyla brevicirrata, Phialidium lan- 

 guidum, P. gregarium and Mesonema victoria, from British Co- 

 lumbia. Maas (1897) recorded three Leptomedusae from the 

 Gulf of Panama. Two of these are unknown here. The third. 



