1865.] 317 



Mr. James Ridings has taken numerous male and female specimens 

 of this handsome species during a late excursion in Colorado Territory. 

 I figured it primarily from a singular individual obtained by the Soci- 

 ety in L863, and which being a unique could not be properly exam- 

 ined so as to determine its affinities which are plainly with Ctenucha 

 and allies, forming one of a group of genera from tropical and tempe- 

 rate America, in which the simple antenna stalk offers a distinctive 

 feature from Zyg&na, Ali/pia, and others, but united with these in a 

 single family — Zyii'amidae — by Dr. Packard, iu a late treatise. 



" Glaucopis latlpennis Boisd," Morris Syn. N. A. Lep. p. 136, may 

 belong to the present, or perhaps to the following genus. I have not 

 seen the species. 



EUPSYCHOMA. nov. gen. 



Wings ample and full. Anterior pair less than twice as long as 

 broad, costa straight, not depressed sub-apically, external margin rounded, 

 internal margin nearly straight, longer than in allied genera. Second 

 and third s. c. nervules bent upwards towards the costa, not depressed 

 as in Ctenucha, third not furcate as in Callaluoia; discal cell open and 

 there is a small sub-costal closed cell absent in both of the above men- 

 tioned genera ; first, second and third median nervules arising near 

 together, equidistant at base, not as in Ctenucha arising from one point. 

 Posterior pair large and full ; external margin much rounded, exceed- 

 ing the abdomen by a quarter of the length of internal margin ; discal 

 cell open ; first, second and third nervules of the lower discal nervure 

 springing near together at base. 



Head small, not so free from the thorax as in allied genera ; maxilhe 

 slender, short; palpi short, third article much depressed. Body slen- 

 der; abdomen short, genital armor exposed underneath, consisting of a 

 broad large triangular piece terminating ki. a long recurved hook-like 

 process, resting above between two anal fbrcipated pieces. 



The ornamentation is different from Callalucia and Ctenucha, want- 

 ing all metallic tinges, the collar is furnished with orange yellow hairs 

 not spreading beneath, wings black with well-defined whitish bands 

 and spots, costae yellowish, posterior pair immaculate black above; ab- 

 domen blackish, non-metallic, with yellowish lateral scales on the seg- 

 ments, and at the anus, while the neuration differs throughout. 



A Zygfenid genus allied to Ctenucha. and presenting some analogies 

 in the neuration to Eudryas, represented in the Collection of this So- 

 ciety by a single individual, destitute of antennse, collected by Mr. 

 James Ridings in Colorado Territory. 



