NOTES ON A COLLECTION OF FISHES FROM CAMERON, 



LOUISIANA. 



By Frank Walter Weymouth, 



Of Stanford University, California. 



The collection upon which the following list is based was made 

 for the Gulf Biologic Station, chiefly by Mr. MiloH. Spaulding during 

 1906. The station is located at Cameron, Louisiana, on the outlet of 

 Calcasieu Lake, about 35 miles east of the Texas-Louisiana boundary, 

 and most of the collecting was done in the vicinity, one of the chief 

 localities being Calcasieu Pass, the mouth of the outlet upon which 

 Cameron is situated. A few of the specimens were obtained at the 

 Chandeleur Islands, nearly 40 miles northeast of the mouth of the 

 Mississippi River and about 300 miles east of Calcasieu Pass, but 

 unfortunately the labeling of the collection when it reached the 

 writer's hands was so confused as to render impossible the exact 

 recording of localities. 



The most striking feature of the collection is a new species of the 

 Cerdalidse, the remaining members of which are known only from 

 the Pacific coast of Central America. For this form it has been 

 found necessary to erect a new genus, Leptocerdale, and the type- 

 species is here described as Leptocerdale longipinnis. 



The specimens are in a great part immature, a fact which has ren- 

 dered identification in many cases very difficult. The extensive 

 collections of Stanford University have been of great assistance in 

 this difficulty, but even with the series at hand some of the young 

 could not be identified. 



The writer wishes to acknowledge his indebtedness to Prof. E. C. 

 St arks, under whose direction the present work was done, and to 

 Dr. Charles II. Gilbert and President David Starr Jordan for many 

 helpful suggestions. 



Family DASYATID/E. 



1. PTEROPLATEA MACLURA (Le Sueur). 



Represented in the collection by a single young specimen (total 

 length, 190 mm.) which shows instead of the four distinct cross bands 



Proceedings U. S. National Museum, Vol. 38.— No. 1 734. 



