394 HYMEN OPTEEA. 



In general appearance S. frugala resembles the species of the petiolated section of 

 the Photopsw-gYou]) of Sphwrophthalma, the coloration and general appearance being 

 very similar; the petiole, however, is much wider towards the apex, the dilated apical 

 part, too, being more distinctly separated from the basal part. The radial cellule is 

 shorter compared to the stigma than in the typical species of Photopsis ; the radial 

 nervure, too, in the latter extends much further beyond the apex of the cellule, usually 

 much more than the length of the stigma, while here it is received quite close to it. 

 I can see no trace of the third transverse cubital nervure in either of the specimens I 

 have examined ; so that if it is permanently absent our form differs both from Photopsis 

 and from the typical Sphcerophthalma in the second cubital cellule receiving both the 

 recurrent nervures. It cannot be referred to Brachycistis owing to the two spurs on 

 the middle tibise. 



148. SphaBrophthalma frugala. 



Ferruginea, longe albo-hirta, pedibus pallide testaceis, femoribus posterioribus ex parte nigria ; alis clare 



hyalinis, apice fusco-maculato. <$ . 

 Long. 15 millim. 



Hab. Mexico, Northern Sonora (Morrison). 



The head is almost as wide as the mesothorax, sparsely covered with long fuscous 

 soft hair, rather strongly punctured, but with all the punctures clearly separated from 

 each other ; rounded and narrowed behind the eyes, the occiput not being transverse ; 

 the mandibles have the tips black, the space enclosed by the ocelli being also black. 

 The antennae are a little longer than the head and thorax united, moderately stout, 

 not attenuated towards the apex, the base pallid testaceous ; the third joint distinctly 

 longer than the fourth. The thorax is punctured all over, the prothorax having the 

 punctures smaller and closer together ; the mesonotal furrows are wide and deep ; the 

 metathorax is elongated, has a gradually rounded slope, and is rather strongly reticu- 

 lated all over. The pro- and mesopleuree are punctured, except the hinder edge of the 

 former, which is smooth and shining. The entire thorax is covered with long pale 

 fuscous hair. The abdomen is longer than the head and thorax united. The petiole 

 is longer than the second segment; closely and coarsely punctured all over and covered 

 with long pale fuscous hair ; the dilated apical portion is somewhat longer than the 

 narrowed basal part; beneath it is covered with long pale fuscous hair, and the punc- 

 tuation is slightly stronger than it is above, the remaining segments are covered with 

 long pale hair ; the second segment is shagreened, almost punctured ; the other 

 segments are more shining and impunctate. The ventral segments, except the 

 second, which is punctured, are smooth and shining. The legs are covered with long 

 white soft hair, except towards the apices of the tarsi, where the hair is shorter, 

 sparser, and darker ; the anterior femora bear no black ; the four hinder femora have 



