NATURAL SCIENCES OF PHILADELPHIA. 279 



Other species have been referred by me to Anosiira. These arc 

 P. trionychoides^ P. oedemius, P. molopinus^ and a larger form, P. 

 muUifoveatus. 



May 20. 



The President, Dr. Rusciienberger, in the chair. 

 Twenty-five members present. 

 The following papers were presented for publication : 



"Description of new species of Orthoptera, collected in Nevada, 

 Utah, and Arizona, by the Expedition under Lieut. George M. 

 Wheeler." By Cyrus Thomas. 



" Observations on the Habits of the Neuters of Formica san- 

 guinea." By Thos. G. Gentry. 



Lilium Wasliingtonianum. Mr. Thomas Meehan referred to a 

 paper by Prof. Alphonso Wood, entitled a Sketch of the Natural 

 Order of Liliacese of the Pacific coast, published in the volume of 

 the Proceedings for 1868, in whicli he describes a "new species" 

 of Lilium, as L. Washingtonianum, giving, as a reason for the 

 name, that it was generally known as the " Lady Washington" 

 by the miners. Prof. W. said, in his paper, that it was remarkable 

 so fine a plant had been overlooked by other botanists. It so 

 happens that it had not been overlooked, but had been described 

 ten years previously b}- Dr. Kellogg, in the Proceedings of the 

 California Academy for 1858. Through the unusual circumstance 

 of two authors employing the same name, the confusion and 

 trouble which loose and careless habits in describers bring on 

 students, in the present case, will not be great; yet it is but just 

 to Dr. Kelloofg that this correction should go into the records of 

 the Academy. 



On a Species of Delphinus By Dr. H. C. Chapman. Tiie 



presentation of a specimen of a male dolphin to the Museum this 

 evening gives me the opportunity^ of calling attention to some 

 points in the economy of the Cetacea, and of noticing that the 

 structure of the specimen before us offers a good illustration of the 

 descriptions given by Cuvier, Owen, and others, of this order of 

 mammalia. 



Of the external characters the most striking are, tlie well- 

 developed caudal fin, the effective instrument of locomotion ; the 

 dorsal and pectoral fins, the blow hole, the very small external 

 opening of the organ of liearing, and the genital aperture. 



The digestive system exhibits a highly complex stomach, divided 

 into several cavities, the esophagus and duodenum being large. 



