HENRY SKINNER. 183 



Eudamus (Pliaedimis) caicus Herr.-Schaeff., Prodr., p. 68, 1868. 

 Eudamus moschus Edwards, Papilio, 2, 141, 1882. 

 Eud. schaefferi, Plotz, Stett. Ent. Zeit., p. 99, 1882. 



The above synonymy is given by Godman and Salvin in 

 the Biologia Centrali- Americana with the following explana- 

 tion : " Dr. Standinger has kindly lent us a specimen of this 

 species which bears the name Erida77ius caiais Herr.-Schaeff. 

 with the type of which it has doubtless been compared. It 

 agrees with a series of examples we possess from Guatemala 

 and Southern Mexico, but those from our Northwestern 

 frontier are rather paler, the palpi are whiter, and the hyaline 

 spots of the primaries are larger. The latter probably belong 

 to Mr. Edwards' Eudamus moschus from Arizona. We hesi- 

 tate to separate them from the darker more southern form, 

 especially as the male genitalia do not differ in any way." 



My Mexican specimens do not differ materially from the 

 large series of Arizona specimens in my possession. 



''Male. — Expands from 1.3 to 1.7 inch. Upper side very like hip- 

 palus. Glossy brown, with nine whitish, semi-transparent spots on 

 primaries, of which four are subapical on costa, three across discoidal 

 and median interspaces, in an oblique line, one in cell and another 

 above this ; these spots are all small, and those in the cell and lower 

 median interspace are much smaller than in hippalus ; fringes of pri- 

 maries whitish-brown, except at outer angle; these as in primaries. 

 Underside of both wings brown, mottled with dashes about apex of 

 primaries, and crossed by two black bands, and a demi-band on sec- 

 ondaries is nearly as dark as the bands, and the margin is gray, but 

 usually the contrast is decided between the ground and bands ; the 

 spots of primaries repeated. Body above dark brown, beneath thorax 

 gray-brown ; abdomen same (in some cases light, with a dark ventral 

 line); legs yellow-brown ; palpi yellowish, with brown hairs ; antennae 

 black above, luteous beneath ; club black above, yellow beneath ; the 

 tip ferruginous. 



" /^^;«a/^.— Expands about two inches. Similar to male. From 6 cfs 

 and 6 9s from Arizona." 



This species was taken abundantly in Arizona by H. K. 

 Morrison in 1883. 



Habitat. — Arizona ; Sonora, Orizaba, Acaguizotla, Mexico; 

 Polochic Valley, Duenas, Guatemala. 



TRANS. AM. ENT. SOC, XXXVII. 



