89 



specimen vein 6 on one side is subdivided into two veins which pro- 

 ceed as longitudinal veins to the outer margin. These differences in 

 veination of the secondaries seem to bear no relation to specific dis- 

 tinctions. 



Two series of specimens received from Mr. Tom Spalding, refer- 

 able to bertholdi of collections ; made a review of Comadia necessary. 



Through the kindness of Messrs. Doll and Englehardt of the 

 Brooklyn Museum, the authors have been enabled to examine the male 

 types of bertholdi and edwardi and take pleasure in naming two new 

 species in grateful appreciation of assistance. 



The genitalia of the males are very primitive and apparently of 

 little value specifically within the Cossidae. Those of the female 

 occasionally show valid characters in the genital plate; but, unfor- 

 tunately, females are not as common in collections as the males. 



As in most of the Cossidae, the maculation is somewhat variable ; 

 and especially in Comadia the amount of black and brown shadings 

 on the primaries is quite unstable. Size, and wing-shape also, is some- 

 what variable, within limits. The only character which seems a stable 

 factor is the thoracic vestiture which appears to be of specific value. 

 The use of this character requires a long series of specimens in good 

 condition, especially as grease curls the scales so that they appear nar- 

 rower than they really are. Habitus is another factor of great im- 

 portance but impossible to express properly in words. 



The species appear more local than at first believed. 



Comadia engelhardti sp. nov. 



Ground color of primaries whitish, dusted with black scales, but the insect 

 nevertheless presenting a pale appearance. Median vein black; often with some 

 black scaling in the cell; but veins 2, 3 and 4 not black. In the better marked 

 specimens there is a diffuse brown shading below the median vein, extending 

 somewhat past the discocellulars. Secondaries: ground color pale; sometimes 

 heavily powdered with fuscous and appearing dark, averaging somewhat smaller 

 than typical bertholdi. Poorly marked specimens might easily be confused with 

 C. dolU except that the reticulations on the primaries are not present in engel- 

 hardti; and the thoracic vestiture is composed of scales which are broad, — not 

 at all hair-like; a character which separates it from all other described species 

 in the genus. 



The holot>T)e represents one of the better marked forms of the species. 



Two specimens from Eureka, Utah (Spalding) apparently belong to this 

 species, but a longer series is necessary to be certain. 



