128 MEMOIRS NATIONAL ACADEMY OF SCIENCES. vol. xn, 



of it in southern New Mexico (Mesilla Valley), and do not think it exists there. — T. D. A. 

 Cockerell in litt. to Dr. Packard, November 3. 1900. 



[Since the above was written, the larva of this species has been found exceedingly destruc- 

 tive to the grass ranges in northern New Mexico. For a full and most interesting account of the 

 species, its transformations, habits, etc., see C. N. Ainslie, "The New Mexico Range Caterpil- 

 lar," Bureau of Entomology (Dept. Agriculture), Bull. 85, Part V (1910). The technical 

 description of the eggs, different larval stages, pupae, and moths are by Dr. H. G. Dyar.] 



[Parasites (cf. Ainslie). — Pimpla conquisitor Say, P. sanguinipes Cress., Chains ovata Say, 

 TacMna meUa Walker, Euphorocera claripennis Macq. 



Predatory enemies (cf. Ainslie). — Stenopogon picticornis Loew (attacking larva); Erax 

 varipes Williston (attacking imago).] 



[Dr. II. G. Dyar, Proc. Ent. Soc. Wash., 1911, p. 5, has given the following table for the 

 separation of the species allied to H. olivise: 



Veins of the wings lined with ocher yellow: 



Ground-color of fore wing blackish, inner line absent dukinfieldi Schaus. 



Ground-color of fore wing pale gray, both lines present. 



Hind wing without submarginal pale band rubridorsa Felder. 



Hind wing with submarginal pale whitish band. 



Larger: Disk of thorax roseate; discal mark of fore wing narrow norba Druce. 



Smaller: Disk of thorax gray; discal mark of fore wing large, white minette Dyar. 



Veins of the wings concolorous: 



Costa of fore wing above ocher yellow. 



Secondaries pale, whitish in the male, rose-color in the female. 



Lines of the fore wing faint, the inner one obsolete hualapai Neumoegen. 



Lines of the fore wing distinct, both present. 



Hind wing of male with no, or very faint, mesial band mania Druce. 



Hind wing of male dusky shaded, with mesial and marginal bands rather distinct lares Druce. 



Secondaries dark rosy brown. 



Smaller, with much rosy tint numa Druce. 



Larger, with little rosy tint nitria Druce. 



Costa of fore wing concolorous or partly whitish. 



Pale, the male largely whitish, the lines of fore wing diffused olivise Cockerell. 



Darkly colored, the lines of the fore wing distinct. 

 Inner line not angled in the middle. 



Discal mark yellowish brown sororius Henry Edwards. 



Discal mark white or whitish. 



With much rosy tint; discal mark narrow and clouded marillia Dyar. 



With little rosy tint; discal mark large, distinct lex Druce. 



Inner line distinctly angled or the upper limb obsolete mexicana Druce.] 



HEMLLEUCA DUKINFIELDI Schaus. 



[Hemileuca dukinfieldi Schaus, Proc. Zool. Soc. Lond., 1894, 235. 



Described from Castro, Parana, Brazil. The types are before me. This species is only 



distantly related to the forms here treated, and is included as the extreme development of this 



type. — Dyar, t. c] 



HEMILEUCA RUBRIDORSA Felder. 



[Hemileuca rubridorsa Felder, Reise der Novara, PI. 90, fig. 2, 1874. 



Felder's description is without definite locality; his figure represents a female. A female 

 specimen from the Schaus collection is before me labeled "Mexico," without definite locality. 

 It is also labeled " Euleucophseus norba Druce," but it differs from that in the uniform gray 

 hind wings without submarginal pale band and in the broader yellow costa. It agrees well 

 with Felder's figure. A male also is before me, collected by Mr. R. Muller in Mexico City, which 

 enables a definite location for the species. — Dyar, t. c] 



