284 



HOUGH. 



[\OL. II. 



C. wheclcri nov. sp., four males and two females (California). 

 — From the collection of Prof. Wm. M. Wheeler, in whose 

 honor I have named the species. Length 10 to 12 mm. Rather 

 a blackish blue ; more opaque than macellaria. As compared 

 with its height, the head is broader than in mac. ; height of 

 bucca, 1.2 to 1.5 mm.; of eye, 1.8 to 2.0 mm. (average in mac. 



bucca, 0.75; eye, 1.9). Front of 

 male linear, of female one-third as 

 wide as head. No orbital bristles ; 

 mac. has either two or one. Geno- 

 vertical plates and vitta of female 

 thickly beset with rather coarse, 

 mostly black, hairs, among which 

 the usual transfrontal bristles can scarcely be made out. Palpi 

 not filiform as in mac, but club-shaped. Base of wing to apices 

 of small basal cells blackish. Squamula thoracalis black, with 

 white border ; sq. alaris white, with black border. Thorax and 

 scutel in both sexes thickly beset with long, soft black hairs. 



Fig. 3. 



Fig. 4. 



much longer than in male mac. ; while female 7nac. has not hairs, 

 but tiny bristles. Chaetotaxy as in mac, but no visible post- 

 humeral in any specimen, while mac. occasionally has a little one 

 laterad the pre-sutural, or one further cephalad, or both (Fig. 3). 

 Mcscmbvinclla. — Two Mexican, but no United States species 

 recorded. Very likely will be found in our extreme south. 



