170 



smooth, the base and inner side of the outer areae strongly closely 

 aciculated; the apical slope smooth, bare in the center, sparsely haired 

 roivnd the edges. The upper half of the metapleurae entirely and the 

 apical half of the .lower .strongly regularly striated, the lower basal 

 half smooth. The apical joints of the four anterior tarsi rufo-fulvons, 

 the tarsal spines of a brighter red colour; the four anterior spurs white, 

 the hinder blacddsh. The anterior jiart of the third transverse cubital 

 nervnre is roundly curved outwardly. 



.'5424 Tiphia fortistriolata sp. no\'. 



Black, densely covered with longish white pubescence, the basaJ part 

 of metanotum somewhat strongly transversely striated, the apex at 

 the siiles with three short stout keels; the central keel only reaching 

 to the middle of the central area; it becomes gradually narrowed 

 towards the apex; the outer keels slightly converge towards the apex; 

 the apical slope is obscurely finely widely striated on the outer edges. 

 Propleurae finely closely striated on the basal half above, the apex 

 obscurely punctured, the rest strongly closely striated. Mesopleurae 

 distinctly but not strongly or closely punctured. Metapleurae somewhat 

 strongly closely .striated, aciculated at the base. Front and vertex 

 strongly closely pun<^turpd, a deep transverse furrow in front of the 

 anterior ocellus. Pygidium strongly deeply punetured, without any central 

 smooth line. The puncturation on the abdomen becomes stronger ajid 

 closer towards. the apex. Basal abscissa of radius in two equal slopes; 

 the apical abscissa straight above, oblique below; it projects distinctly 

 beyond the apical (transverse cubital nervure; the upper part of the 

 second recurrent nervure is roundly curved below. Male. LrCngth 7 mm. 

 Ornisby country, Nevada, July. (Baker). 



Near the apex of the first abdominal segment is a punctured trans- 

 verse furrow or depressioin. Basal slope of prothorax closely transver- 

 sely rugose; the base is keeled above; the thorax above is closely 

 finely punctured; the puncturation on the scutellum is sparser at tho 

 base and still more so in the middle. 



Characteristic of this species is the strongly, if irregularly, striated 

 metanotum, with the abbreviated or at least weakened, central keel. 

 A smaller variety from Colorado has the puncturation and striolation 

 less strongly developed. 



f)41R Paratiphia erythroura sp. nov. 



Black, .shining, the pubescence on the front and vertex very sparse 

 dark -and short; on the occiput dense long and white; except on the 

 sternum the pubescence on the thorax is very sparse and short; the 

 basal segment of abdomen is sparsely haired, the third to fifth fringed 

 (especially laterally) with long white hair; the hair on the penultimate 



