Cincinnati Society of Natural History. 



group, and very likely may prove to be geographical forms. 

 This may be determined by comparisons of full series of 

 material for the' intermediate territory or by breeding, but 

 until so proven it will be more satisfactory to retain their 

 distinctions. 



Scaphoidkus scai^aris VanDuzee. (Plate X, Fig. 7, 7a, 7b). 

 Scaphoideus scalaris VanDuzee. Entomologica Americana, VI, 



p. 51, 1890. Catalogue Trans. Am. Ent. Soc., XXI., p. 300. 

 Osborn & Ball. Proc. Iowa Acad. Sci., IV, 232 (Record). 



More slender than consors, vertex as long or longer than 

 wide, apex prominent, though obtuse at tip. Length to tip 

 of elytra 5 mm. 



Vertex long; as long as width, and in some cases one-fifth 

 longer; front narrow, sides nearly straight and parallel; 

 clypeus widening gradually to tip; lorae long, reaching mar- 

 gin of cheek. Pronotum half as long as wide, hind border 

 slightly concave. Cross veins between outer claval and 

 suture obscure. 



Color, light testaceous, intricately marked with fuscous, 

 ocelli white. 



Genitalia: 9 , last ventral segment long, narrowed toward 

 tip, lateral angles rounded, apex truncate or slightly excised; 

 pygofer rather broad at base. % , valve very small or hidden, 

 plates slender, triangular, reaching to middle of pygofers, 

 their flaccid tips ciliate at end and reaching to tip of pygofers. 



A very abundant species in Iowa and west to the Pacific 

 coast. Numerous specimens collected at Ames, Iowa, 

 July, August, September and October. One Burlington, 

 Iowa. One Columbus, Ohio; Phoenix, Ariz., May 9, Mex., 

 Pullman, Wash, (from E. D. Ball), California (VanDuzee), 

 Los Angeles, Cal. (Coquillett), Santa Cruz, Cal. (Koebele), 

 Clinic Mts., Ariz. (Hubbard). 



While there appear to be some slight variations, I am 

 unable to fix upon any distinctive and permanent character 

 to separate the representatives from Mississippi valley and 

 Pacific region. The specimens from Pullman, Wash., are a 

 little larger, and, perhaps, more brightly marked than the 

 average from Pacific coast, but not more so than many indi- 

 viduals that can be selected either from California or Iowa. 



12 



