INSECUTOR INSCITI^ MENSTRUUS 125 



Thorax brown, with four dark brown stripes, two near the * 

 center and two lateral of large disconnected oval spots. 



Humeral bristle strong. One to five dorso-centrals ; dorsum 

 with many short thick black hairs. 



Pleura dark brown, lighter in places, propleura always with 

 two bristles, sometimes three. Mesopleura bare except two 

 hairs below the disk. Pteropleura bare. Sternopleura, one 

 strong bristle and six short thick hairs, along the top edge, 

 rest bare except between the coxae, where there are four or 

 five rows of bristles. 



Abdomen dark brown, usually with a thin pale apical edging, 

 with few or many short thick black hairs. Hypopygium yel- 

 low brown- 

 Legs and coxae, yellow brown, the preapical bristle of the 

 fore tibia short, the hind one longest. Fore femora swollen, 



Wings hyaline, veins brownish. 



The female is the same as the male. 



Described from twenty-four specimens, eight male and six- 

 teen female, one taken 26th May, all others in June at Cran- 

 brook, British Columbia, and one from Michel, British Colum- 

 bia, 2d August. 



The eggs are elongate oval, tips sharp, with longitudinal 

 ridges. 



Amoebaleria, new genus. 



With prosternal bristles, usually only one, sometimes two 

 pairs. Foremost fronto-orbital bristle from over half to about 

 three-quarters the length of the hind one. Otherwise as Leria 

 Loew. 



Specimens of this genus are usually large. Five species 

 have a hairy mesopleura, four without. The male hypopygium 

 is large, but the two main claspers are small, and irregularly 

 oval instead of the long hooks of Leria. The name is from 

 the Greek amoeba, changing, referring to the variability of 

 the dorso-centrals. 

 Amoebaleria scutellata, new species. 



Length 8 mm. ; foremost fronto-orbital about three-quarters 

 of the hind one, one pair of prosternals, four dorsocentrals. 



