no. i. BOMBYCINE MOTHS OF NORTH AMERICA— PACKARD. 127 



This species is near E. sororia and hualapai. 1 



Among the material used in preparing this description are two specimens kindly given 

 me by Prof. Cockerel!. 



Geographical distribution. — Las Vegas, N. Mex.; Maxwell City, N. Mex., bred by Cockerell 

 from larva sent by John Davis (Cockerell). Cimarron River, northern New Mexico, October 17, 

 1875 (W. L. Carpenter). Not yet found in Mexico; quite restricted to New Mexico. [Ainslie, 

 Bull. 85, Part V, Bureau of Entomology, U. S. Dept. Agric, p. 62, records it from southern 

 Colorado, Texas, and Oklahoma. It is also thought to occur at Garden City, Kans.] 



[The following appeared in Psyche, 1898, p. 298:] 



Hemileuca sororia race olivise Ckll., Psyche, 1898, p. 252, <? (Santa Fe\, N. Mex.). 



On August 20, 1898, Mr. John Davis sent me some larvae collected at Maxwell City, N. Mex., 

 stating that they were then extremely numerous, and were devouring the pastures. With the 

 larvae were sent pieces of grass, which Prof. E. O. Wooton identifies as a Muhlenbergia, probably 

 M. texana Thurb. (porteri Scrib.). Form these larvae I bred four moths of olivise, which was 

 only known heretofore by a single S . A male emerged September 13, two males September 

 14, and a female September 15. 



Larva. — Of the living larva I noted as follows: Ochreous with a very dark-brown head; 

 body irregularly marked with very dark brown, especially about the sutures; tufts of spines 

 as usual in the genus, the central ones black, the lateral ones (spinules) ochreous with black 

 tips; thoracic legs black. The skin is sparsely beset with colorless hairs. Spiracles narrowly 

 edged with black. 



Cocoon. — The cocoon is composed mainly of fragments of the Muldenbergia, loosely woven, 

 with many open spaces. 



Imago. — The males agree in the main with the Sante F6 type, but are, perhaps, a little 

 ^grayer. The female expands 65 mm., and has a warmer, more ros} 7 , color than the males. The 

 general color of the anterior wings is nearly uniform with the two pale bands distinct. 



Compared with the description of H. sororia Hy. Edw., the 9 olivise differs thus: Costa 

 of primaries orange ferruginous throughout; secondaries above with the nervures pale ferrugi- 

 nous; on the under side the nervures are pale ferruginous on all the wings, and the costa of the 

 primaries is broadly orange ferruginous, subfuscous at base, that of the secondaries washed 

 with blackish; head clothed with dark fuscous hair, gray on vertex and occiput; thorax with 

 dense long, gray hair; antennae entirely bright orange; abdomen above with fuscous hair, 

 chestnut on the first two segments ; hind margins of third to fifth segments with red hair, which is 

 replaced by white on the extreme sides, and beneath except in the middle; apex with mixed 

 fuscous, white, and red hair. The expanse is 11 mm. less than that of sororia. H. olivise is 

 of about the same size as H. sororia hualapai (Neumoegen) from southwestern Arizona, but 

 differs in the markings. The three forms, sororia, hualapai, and olivise, are clearly geographical 

 races of a single well-marked species. 



In the Mesilla Valley, N. Mex., I have never taken H. olivise, but only H. maia race artemis 

 (Pack.) and H. juno Pack, the former being much the most frequent. — T. D. A. Cockerell. 



Hemileuca olivise is now known from Santa Fe, N. Mex., Maxwell City, N. Mex., Las Vegas, 

 N. Mex., and Raton, N. Mex. The Raton record is based on a <? taken there by my wife (Wil- 

 matte P. Cockerell) during September of this year. The Las Vegas record is based on a large 

 number of males taken by my wife and myself flying around an electric light in this city, October, 

 1900. The moths taken at the light at this time were all H. olivise, except one Ennomos mag- 

 naria. H. olivise is evidently common in northern New Mexico, but as it does not fly until 

 September and October, it has escaped the notice of collectors. I have never seen anything 



1 [Two distinct aberrations are in the National Museum, having been obtained by Mr. F. Springer at Cimarron, Colfax County, New Mexico. 



(1) ab. grisea. Male. Broad area between the pale bands on primaries dusky gray, much darker than usual. There is a female form with the 

 same tendency to gray, but not so marked. 



(2) ab. suftusa. Female. Upper side suffused with reddish stone color, the costal region broadly blackish, especially toward the base; bands 

 indistinct. Under side suffused with blackish, with reddish orange costa and streaks. The discal spot on primaries above has a pallid center.] 



