REPORT UPON A COLLECTION OF FISHES MADE AT GUAYMAS, 

 SONORA, MEXICO, WITH DESCRIPTIONS OF NEW SPECIES. 



BY 

 Barton W. Evermann and Oliver P. Jenkins.* 



(Witli Plates i-il. ) 



Through the liberality of the trustees of De Panw University and of 

 the Indiana State Normal school, the authors of this i)ai)er were enabled, 

 during the summer of 1887, to make a collection of fishes in the Bay of 

 (ruayiuas, Soiiora, Mexico. 



A preliminary account of the collection, with descriptions of seven- 

 teen species thought by us to be new, has been published in the Pro- 

 ceedings of the United States National Museum for 1888, i)p. i;>7-15s. 



Many interruptions and other duties have prevented the i)reparation 

 of a fuller account of the collection until the present time. 



It is proper to refer here to the former studies of the fishes of the 

 Gulf of California. 



The tirst considerable collection of fishes from the Gulf of California 

 was made by Mr. John Xantus, who was for some time stationeil at 

 Cape San Lucas as a tidal observer. 



The fishes he obtained were sent to the Smithsonian Institution and 

 were described by Dr. Theodore drill in the Proceedings of the Acad- 

 emy of Natural Sciences of Philadelphia for the years 18G2 and 18tJ;i. 

 This collection was again studied by Professors Jordan ami Gilbert 

 the results of which studies were published in the Proceedings ot the 

 U. S. National Museum for 1882. This collection, although comprising 

 fewer than one hundred species, was a most valuable one, containing, 

 as it did, a large proportion of new species and several new genera. 



In 1873-'75, Dr. Thomas H. Streets, while on board the U. S. steamer 

 Narragansett, engaged in making a survey of Lo»ver California, nuide a 

 collection of fishes in the Gulf of Calilbrnia, the account of which was 

 published in Bulletin No. 7, U. S. National Museum, 1877. 



In 1880-'81, Capt. Henry E. Nichols, during cruises of the U. S. Coast 

 and Geodetic Survey steamer Hassler along the west coast of Mexico 



* The order in the signature of this paper indicates nothing as to seniority of author- 

 ship. The authors shared equally both in making the collection and in the prep- 

 aration of the report, and are to be held equally responsible for its contents. This 

 statement applies also to the paper by them describing seventeen new species of this 

 collection which has already appeared. 



Proceediuga Natioual Museum, Vol. XIV— No. 846. 



121 



