126 FAMILY EVANIID^. 



sion of the tropical region into Texas, may be considered as a fund- 

 amentally neotropical species, an affinity further corroborated by it? 

 coloring. 



I am indebted to Mr. Henry L. Viereck for permission to study 

 and describe this form. 



PRISTAUL,ACUS Kieffer. 

 I think it will be best to group Oleisoprister, Neaulaeus and Fris- 

 taulacus sen. str. together as subgenera of Kieffer's Pristaulaciis 



Pristaiilacii!^ (Oleisoprister) deiitatus n. sp. 



% . — Black ; tarsi brown , apical half of petiole (more ventrally) and basal two- 

 thirds of second segment red. Head smooth and polished with only fine setig- 

 erous punctures. Medial mesothoracic lobe somewhat gibbous, shallowly emar- 

 ginate ; prothorax with a slight blunt irregular tooth on the antero-lateral angle. 

 Posterior metatarsus one-eighth longer than the remaining joints together, three 

 times as long as the second joint; wings hyaline, except a large fuscous spot 

 beneath the stigma. Petiole distinct but short. Length 9 mm. 



The tooth on the lateral angles of the prothorax will distinguish this species 

 from all others. 



Hah. — Orm.sby County, Nevada, C. F. Baker. 

 Type. — In tlie coll. C. F. Baker, Para, Brazil. 



Pristaiilacus (Oleisoprister) firiniis Cresson. 

 The only example that I have seen besides the unique type is a 

 female sent me by Prof. C. V. Piper from Mt. Rainier, Washington. 



Pristaulacus (Oleisoprister) resutoriTorus Westwood. 

 Olympia, Washington, one female. 



Pristaulacus (Oleisoprister) abbottii Westwood. 

 Washington, D. C. ; Marquette, Michigan, April 7th. 



I'ristaulacus (Oleisoprister) stigniaterus Cresson. 

 Missouri ; Norton's Landing, Cayuga Lake, New York, June 21st. 



NE4lIIiA€lJS n. subgen. 

 Type. — Aulacus oceiclentalis Cresson. 



Coextensive with Pristaulacus as used in my i'oi-mer paper. 

 Pristaulacus flavipes Kieffer, Arkiv. f. Zool., I, p. 559, probably 

 belongs here. 



Pristaulacus (IVeauIacus) occidenlalis Cresson. 

 Blue Mountains, Washington, July ir)ih, tiiree males, one female ; 

 Beulah, New Mexico, coll. Viereck ; Idaho. 



