276 POMONA COLLEGE JOURNAL OF ENTOMOLOGY 



Palpi slender, upcurved; or straight or oblique, with upright scaly vesti- 

 ture, making them blade-like ; fore-legs of male always modified and 

 tufted, tibia always abbreviated and with a long anterior process 

 Herminiini. 



Palpi straight or oblique, with upright scaly vestiture which is transversely 

 compressed ; anterior legs of male not modified Hypenini. 



In the tribe Heliini the genius Epizenxis is the only Pacific Coast genus, 

 and that is represented in California by two species. E. occidentalis Smith, 

 w?s described as a variety of the common eastern lubricalis Geyer; but is 

 probably a good species. It is a smooth, yellowish-smoky species with a 

 silky lustre, the median lines dentate, diffuse, and more in the form of bands 

 than lines. The maculation of primaries is continued on the secondaries and 

 the species expands about an inch and a half. I have no definite localities 

 for this species and examples are very rare in collections. 



E. cobeta Barnes, is a somewhat smaller, rather broader-winged, decidedly 

 more mottled species. The darker tints are chocolate brown, and the pale 

 shadings over the transverse lines are yellow. The type of maculation is 

 identical for all the species. The locality given is Southern California, and 

 I have only two examples from Dr. Barnes from that region ; but the species 

 extends also into Arizona, and I have several samples from that State. 



Three species that occur in Arizona should also occur in the arid regions 

 of California, and I quite expect a representative of the small forms, typified 

 by the eastern rotundalis. 



The tribe Herminiini is one of very great interest because of the wealth 

 of secondary sexual characters that occurs in the male, and because of the 

 variation that occurs in the venation of the primaries. This latter centers 

 about the accessory cell, which tends to become, and, in several genera 

 actually is, lost ; the veins usually arising from it becoming modified in several 

 ways. 



The sexual modifications begin with the antennae which are simple or 

 ciliated in the female ; but never in the male. They may be pectinated, some- 

 times so strongly as to be almost plumose ; they may be twisted or furnished 

 \Aith distorted joints at basal third; they may have two or three of the joints 

 toward the middle furnished with stout spine-like processes ; or there may 

 be a tuft which may or may not cover an excrescence or other modification. 



The palpi are not infrequently tufted in the male, and sometimes these 

 tufts of hair pencils are enormously exaggerated and extend back half the 

 length of the body or more. 



The wing-form is sometimes different in the sexes, and the primaries 

 may even be split in the male while they are entire in the female. 



The most usual and characteristic modifications are found on the forelegs, 

 on which we may have a small hair-pencil only, attached to the inner side 

 of the tibia, or on which we may have every segment or part modified into 

 a sheath for a tuft or pencil until, when spread out it is almost impossible 

 to recognize the parts. 



