282 



THE CANADIAN ENTOMOLOGIST 



tion, occurring also more or less abundantly over the dorsum, 

 but especially noticeable in irregular longitudinal masses between 

 the latero-medial rows of depressions on the dorsum, and also laterad 

 of each roAv; a fringe of seventeen short, white, waxy spurs along 



either lateral margin of the 

 body, the two caudal ones 

 being the longest; entire 

 dorsum bearing long, thin, 

 silken, glass-like hairs, some 

 of which are as long or 

 longer than the insect; the>' 

 break off very easily, but 

 are soon replaced b\' new 

 ones; iridescent; apparent- 

 ly arising from definite 

 locations, for some of them 

 are marginal, arising from 

 about the middle of each 

 segment while others are 

 just anterior and posterior 

 to each dorsal depression ; 

 apparently more in the 

 caudal than in the cephalic 

 region, as many as ten 

 arising /from the fourth 

 segment from the anal end 

 of one female; legs and 

 antennae pale brownish, 

 when boiled in lO^r KOH 

 turns red-brown to brick- 



Fig. 24. — Phenacofcus pettiti n. sp., greatly enlarged. 

 Note the two longitudinal rows of dorsal depressions 

 and the long, waxy filaments. 



red, but does not colour the solution. 



Adidt female mounted, — 2.7 mm. long and 1.8 mm. wide; 

 derm in cephalic region bearing numerous long and short body 

 hairs, most numerous cephalad of the mouth-parts and between 

 the basal segments of the abdomen; also with numerous short and 

 long body hairs in proximity to the anal orifice; cerarius type of 

 gland-pores scattered over the derm; several large gland-pores of 

 the " circumgenital " type also near the anal opening; many large 



