1902.] NATURAL SCIENCES OF PHILADELPHIA. 733 



Type, Coll. Acad. Nat. Sci. Philadelphia. Cotype, one cf, same 

 place and date. 



PMlanthus crabroniformis Sm. 



Philanthus crabroniformis Sm., Cat. Hym Brit. Mus., IV, 474, 



1856 /^ 

 Philanthus multimaculatus Cam., Biol. Cent. Am. Hym., II, 133, 



Philarithm anna Dun., Ent. News, VIII, 68, 1897 (c^ not ? ). 

 PhilantJius cleonm Dun., Can. Ent., XXX, 152, 1898, ?. 



One d". La Jolla, August. Two dd", San Pedro, July 10. A 

 variable species, but distinguished from its relatives by the produced 

 front of male, the sparse deep punctures of dorsum and the closer 

 deep punctures of abdomen common to both sexes. In the male 

 the front has a medial longitudinal impression, or is smooth, or with 

 a slightly raised line ; an analogous variation appears in the front 

 of the ? , the color pattern is also variable, more elaborate or less 

 than the pattern described by Smith. This species is recorded 

 from Colorado, Washington, New Mexico, California (type local- 

 ity), Oregon and Montana. The Colorado specimens are the more 

 strongly colored. 

 Philanthus pacificus Cress. 



Two dd, San Pedro, Cal., July 9. 



Diploplectron brunneipes Cress. 



One 9, identical in size, structure and sculpture with the type 

 from Nevada ; it differs in color of the prothorax which is black, 

 and in the darker anteunse, tegulce and legs ; the abdomen is black 

 with exception of the apex of pygidium. 



San Pedro, July 11. 

 Mygnimia ustulata Dahlb. 



One d, La Jolla, August. 

 Cryptocheilus flammipennis Sm. 



Two ? ? , San Pedro, July 27. Another ? in Coll. Am. Ent. 

 Soc. from Palo Alto, 1891 (Leland Stanford, Jr., Univ.). 



Hemipogonius subopacus Cress. 



One ?, San Pedro, July 28 (A. Springer). Penn.-^ylvania is 

 the only locality so far known for this species represented by the 

 unique; types ? and d. It seems quite strange that it should be 

 found on the Pacific coast. A careful comparison reveals no 

 specific difference between this specimen and the type : the wings 



