1903.] NATURAL SCIENCES OF PHILADELPHIA. 187 



is seen to extend from east central Texas to the Rio Grande ^' alle}- in 

 New Mexico, and from the Red River region to south central Texas. 



Remarks. — ^This species exhibits a great A-ariation in size, and also 

 in the shape of the pronotum. 



Specimens Examined. — Nineteen males, eight larvae: 

 14. Shovel Moimt, Burnet county, Tex. September 2-October 29, 



1901. (Sehaupp.) (Acad. Nat. Sciences Phila.) 

 4. Round Mountain, Blanco countj^. Tex. (Sehaupp.) (Acad. Nat. 



Sciences Phila.) 

 2. Austin, Travis county, Tex. Feb. 19, 1903. (Wheeler.) (Acad. 

 Nat. Sciences Phila.) 



1. San Marcos, Hays county, Tex. (Pilsbry.) (Acad. Nat. Sciences 



Phila.) 



2. Devils River, Valverde county, Tex. (Pilsbr}'.) (Acad. Nat. 



Sciences Phila.) 

 2. Pecos High Bridge, Valverde county, Tex. (Pilsbry.) (Acad. 



Nat. Sciences Phila.) 

 2. Texas. Riley Coll. (U. S. N. M.). 



Homoeogamia erratica n. sp. 



Type. — ; Prescott, Yavapai county, Ariz. June 10, 1902. 

 (Oslar.) (Acad. Nat. Sciences Phila.) 



Differing from bolHana in the smaller size, the greater interspace 

 between the eyes (which is much more than half that between the 

 ocelli, instead of half or less than half), the obscure character of the 

 nervures of the distal portion of the marginal field, and more forked 

 structure of the nervures of the distal portion of the discoidal field. 



Description. — d^. Size rather small; form acute elliptical; surface 

 sub-coriaceous. Head with the interspace between the eyes slightly 

 less than that between the ocelli ; ocelli very large, and in contact with 

 the eyes along their superior margins ; antennae almost equal to the 

 bod}' in length ; basal joint rather elongate. Pronotum sub-triangular, 

 the basal line being represented by the posterior margin; posterior 

 margin very broadly arcuate, lateral angles rounded; anterior margin 

 and surface covered with hairs, those on the margin being rather long, 

 and those on the surface very short. Tegmina elongate, the apex well 

 rounded; proximal portion of the anterior (lateral) margins sparsely 

 haired ; basal field ■\nth the nervures but shghtly marked distally, not 

 visible in the proximal portion; nervures of the discoidal field parallel^ 

 oblique, straight, frequently bifurcate ; anal sulcus rather deep, strongly 

 arcuate. Wing reaching the tips of the closed tegmina, apex broadly 

 rounded. Supra-anal plate produced, -with a median triangular emar- 



