J. R. MALLOCH 237 



with a complete series of antero-ventral bristles; hind tibia with two antero- 

 ventral and two antero-dorsal bristles, the calcar short. Costal thorn very 

 small. 



Female. — Similar in color to the male. Only the fore femora with the bases 

 blackened. 



Eyes less conspicuously haired than in male, separated at frons by one- 

 third the width of head, at base of antennae by about three-fifths the width 

 of head; orbits with numerous short setulose hairs in addition to the bristles. 

 In other respects as the male. 



Length, 8 to 9 mm. 



Type (male), allotype, and several paratypes, San Antonio 

 Canyon, California, July 25, 1907, (Hine), [Ohio University]. 

 Paratypes, one female, Hilton, one female, Mount Lowe, one 

 female, Mount Wilson, and one female, Pasadena, California. 

 The last specimen is in the collection of the California Academy 

 of Sciences, and the preceding three in the U. S. National 

 Museum. 



DENDROPHAONIA new genus 



Generic characters. — Closely related to Euphemia, having 

 distinct presutural acrostichal bristles, and the male orbits with 

 bristles on the entire length from base of antennae to anterior 

 ocellus. It differs, however, in having the cheek l^elow anterior 

 margin of eye with one or two long strong bristles which are 

 upwardly curved (figs. 6, 7), and the lower supra-orbital bristle 

 in female very strong and forwardly directed. The notopleural 

 bristles are not surrounded with hairs, and the anterior intra-alar 

 bristle is strong and almost in transverse line with the strong 

 supra-alar. The hind tibia in both sexes has one or more bristles 

 basad of the calcar and usually a series of long and short ])ristles 

 on anterodorsal surface. 



Genotype, Spilogaster hUariJorniia Stein. 



Key to Species 



1. Thorax with four pairs of postsutural dorsocentrals; hypopleura with some 

 hairs on up[)er margin in front of spiracle; hind femur of male with a 

 stout bristle near middle on posteroventral surface (fig. 20). 



querceti Bouche 



— Thorax with three pairs of postsutural dorsocentrals; hypopleura bare; 

 hind femur of male with a few very short setulae on basal two-thirds 

 (fig. 19) hilariformis Stein 



TRANS. AM. ENT. SOC, XLVIII. 



