125 



Dipterolojjie, 1904, 270-2S3) aud with a inalo exaii;ple of what T make 

 out to be iV. toUeca Sauss. from Mexico I am of the oi>inioii that it is 

 a Norton a My species is much smaller than any t)f the described spe- 

 cies of Norlovia In bavins a transverse keel on the tirst abdominal seg- 

 nieut (as in Sy„imnrphii>i) it agrees witli N. lugem Schult. from Peru. 

 The other species have no such suture. 



3458 Polistes aurifer Sauss. 



This species was described from California (Vespides il, 7S) where it 

 is one of the commonest species, as it is now also iu the Sandwich Islands. 

 It is a variable species, particularly as regards the amount of black on 

 the head, thorax, and abdon;en. In extreme varieties the black on these 

 parts may be entirely absent, being replaced by rufous color, especially 

 in the workers. The malar space on the inner side is as long as the 

 sixth antenna] segment; the clypeus in the middle above is transverse 

 with the sides straigth, obliquly narrowed; the apex in the middle projects 

 broadly roundly, its central part being wider than the lateral. The legs 

 a 1.^0 nay want entirely the black colour, it being replaced, as on the 

 thorax, by rufous. Prof. Baker has taken the species at Claremont, Stan- 

 ford University, and Catalina Island, California. It seems rather remar- 

 kable that the species should have spread to the Sandwich Islands and 

 so far as is known to )ione of the West Indian Islands. 



3444 Trielis xantiana Sauss. 



Prof. l;>aker sends from Urmsby county, Nevada a fenmle Trielis 

 which I can only refer to 2\ xantiana Sauss. It has the thorax entirely 

 black; the head is black except for two marks between and touching the 

 antennae, a small one in the center of the face and the greater part of 

 the clypeus which are red; there are only six large yellow marks on the 

 abdomen, the pair on the first segment present on the typical form being 

 absent. The Ormsby county specimen may of course represent a distinct 

 species; but the n.aterial at my command does not enable me to form a 

 definite opinion on the matter. T xavtiaiia is a Californian species, cf. 

 Saussure, Cat. Sp. Gen. Scolia, p. 149-151. 



C'halc.ididcie 



3481 Erasema ruficoUis sp. nov. 



Brassy, largely tinted with rosy and blue; the abdomen is darker co- 

 loured, more purplish in tint, its first segment with a wide pale testaceous 

 band on the apex; the antennal scape and prothorax rufo-testaceous; the 

 legs are red, the tibiae darker colored. Wings smoky testaceous; a hyaline 

 band near the base, an oblique triangular one (the wide end in front) 

 at the apex. Female. Length 3 mm. Taken at Claremont, California. 



3asal two joints of the antennae metallic blue, the others blackish, 

 the basal largely tinged with red and puride. Head closely distinctly 

 jninctured, the upper part covered with fuscous, the lower with longer 



