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.