SNOW : LIST OF COLEOPTERA. 325 



the dry bed of Date creek and across the Cactus Plain to our 

 fourth camp, which was located fifty miles west of Martinez 

 and about three miles from Tappan's ranch, ten miles south of 

 Artillery peak, on the left bank of the Bill Williams Fork, at a 

 distance of about twenty-five or thirty miles from the junction 

 of that stream with the Colorado river. Our tents were pitched 

 near a lone cottonwood tree on the bank of the stream about 

 half a mile from its entrance into the so-called "box canyon." 

 There were two or three Mexican ranches within a mile of the 

 camp, where we obtained an abundant supply of the most. de- 

 licious muskmelons, and where the luxuriant alfalfa fields 

 attracted a profusion of insects of all orders. At night we 

 "sugared" for moths on the trunk of our cottonwood tree, se- 

 curing large numbers of individuals, but a small number of 

 species, of Noctuids. The three or four species of Mesquite 

 furnished a considerable variety of coleopterous species, especi- 

 ally of the family Buprestidse. The so-called "poly verde" 

 was notably rich in desirable species. 



My associates in the Arizona expedition of 1902 were Dr. 

 Chas. F. Adams, Roy L. Moodie, and my son Frank L. Snow; 

 in 1903 they were Doctor Adams, Geo. C. Mackenzie, and Eugene 

 Smyth, and the success of the expeditions was largely due to 

 the energy with which these fellow students devoted their at- 

 tention to the work in hand. 



I. LIST OF COLEOPTERA. 



For the Identification of species not readily determinable from the University 

 collection, the writer is under obligations to Mr. Charles Liebeck and Mr. H. C. 

 Fall. 



Henshaw's numbers are used. Abbreviations for localities: O. for Oak 

 Creek canon ; H. for Humphrey's Peak at base ; M. for Martinez ( Congress Junc- 

 tion ), and B. for Bill Williams Fork. 



Family Cicindelid^. 



12. Tetracha Carolina Linn. B. 



20. Cicindela nigrocterulea Lee, var. M. 



40. punctulata Fab. O. 



57. lemniscata Lee. O. M. 



Family Carabid^. 



73. Omophron obliteratum Horn. O. B. 



Cychrus van dykei Roetschke. O. 



n. sp. H. 



