1916] American Species of Xylocelia 347 



Xylocelia crassicornis Viereck. 



1904. Diodonlus crassicornis Viereck, Trans. Amer. Ent. Soc, xxx, p. 243. 



Type locality: Corvallis, Oregon. 



Xylocelia fraternus Rohwer. 



1909. Diodontus fraternus Rohwer, Trans. Amer. Ent. Soc, xxxv, p. 106. 



Type locality : Florissant, Colorado. 

 Xylocelia flavitarsus Fox. 



1892. Diodontus flavitarsus Fox, Trans. Amer. Ent. Soc., xix, p. 316. 



Type locality : Colorado. 



Xylocelia leguminiferus Cockerell and Fox. 



1897. Diodontus leguminiferus Cockerell and Fox, Proc. Acad. Nat. Sci. 

 Phila., p. 141. 



Type locality: Sante Fe, New Mexico. 



Xylocelia neomexicanus Rohwer. 



1909. Diodontus neomexicanus Rohwer, Trans. Amer. Ent. Soc, xxxv, p. 106. 



Type locality: Rowe, New Mexico. 



Xylocelia maestus n. sp. 



cf . Length 5.5mm. Labrum not exposed; front strongly ruguso- 

 punctate; vertex and occiput finely granulate with distinct punctures; 

 gense with close elongate punctures which give them the appearance 

 of being striato-punctate ; impressed line of front wanting; antennal 

 joints 8-12 serrate beneath; antennae puberulent, joints 1 and 2 of 

 fiagellum equal; mesoscutum strongly punctured, densely so anteriorly; 

 mesoscutellum with fine, well separated punctures; episterna anteriorly 

 very coarsely reticulate, posteriorly finely so, tending to become 

 obliquely rugose; propodeum above coarsely reticulate, posterior face 

 with larger reticulations, supra-medially there is a large triangular 

 fovea, much larger than the others on the posterior surface ; abdomen 

 distinctly microscopically punctate, the punctures becoming larger on 

 the apical segments; lower portion of front, and clypeus silvery pubes- 

 cent. Wings hyaline, stigma and nervures of anterior wings piceous. 

 Black; posterior lobes of pronotum yellowish; palpi, tegul^, all the 

 tibiae in front, anterior tarsi, and basal half of middle tarsi, testaceous. 



9 . Unknown. 



Type: A male collected at Omaha, Nebraska, August 29, 

 1914 (L. T. Williams). 



One paratype collected at the same time and place. Most 

 nearly related to flavitarsus, from which it differs in having the 

 antennae serrate beneath, the posterior lobes of the pronotum 

 yellowish, and other minor characters. 



