THE CANADIAN ENTOMOLOGIST 83 



o. Form very narrow; head about five times longer than wide between eyes; 

 hemielytra in short-winged form rounded at apex, membrane lacking; 



length 9—12.5 mm propinquus Renter., 



Form broader; head about three times longer than wide between eyes; 

 shortened hemielytra truncate at apex, membrane present; length 

 7.5—8.75 mm limbatus Dahlbom. 



6. Hemielytra in long-wnnged form without three brown dots; undeveloped 



. hemielytra much shorter than abdomen; dorsal surface of abdomen dark 

 brown, margin of connexi\um and single or double median stripe pale; 



length 8—9 mm flavomarginatus Scholz. 



Hemielytra in long-winged form with three brown dots, one on disc of 

 corium, two on membranal suture; undeveloped hemielytra about as 

 long as abdomen; dorsal surface of abdomen without median stripes .7. 



7. First antennal segment very slightly longer than anteocular portion (;f 



head; dorsal surface of abdomen black; tibiae with black dots; copulatory 

 hooks of male with large semicircular short-pointed blade and short 



stem (fide Renter) inscriptus Kirby. 



First antennal segment much longer than anteocular portion of head... 8. 



8. Colour gray; form narrow; markings of posterior surface of front and 



middle femora tending to become- a transverse striping; tibiae 



immaculate 9. 



Colour reddish to dark brown; form broader; femora conspicuously spot- 

 ted, less tendency to striping 10. 



9. Anterior femora extending beyond apex of head ; copulatory hooks of 



male with large semicircular blade and stem broadened basally; 

 length 6.5—8.5 mm ferus Linne. 



Anterior femora not reaching apex of head; copulatory hooks with small 

 elongated blade and broad arcuate stem; length 6—6.5 mm. (recently 



introduced from Europe) brevis Scholz. 



10. Posterior tibiae dotted; colour dark brown; membrane in short-winged 

 form with closed cells; hooks with small triangular blade and long, 

 broad, undulated stem; length 6.5—8.5 mm roseipennis Renter. 



Posterior tibiae immaculate; colour pale reddish brown; membrane in 

 short-winged form without closed cells; hooks with large, semicircular 

 long-pointed blade and short stem; length 5.6—7 ra\'n...rufusciilus Renter 



Anthocorid^. 



Genus Tetraphleps Fieber. 



Fieber, Wien. Ent. Monat., \'ol. 4, 1860, p. 262, PI. 6, Fig. F; Id., Eur. Hem., 

 1861, pp. 37-38, 135-136. 



Renter, Monog. Anthoc, 1884, p. 56, 85. 

 Slosson, Ent. News, Vol. 17, 1906, p. 326. 



Body finely pubescent; eyes slightly distant from pronotum; first rostral 

 segment not extending beyond insertion of antennae; second antennal segment 

 clavate, third and fourth fusiform. Sides of pronotum explanate and sud- 

 denly curved inward anteriorly, extending more or less beyond level of base of 

 pronotal collar. Membrane with four distinct veins. Metasternal canals 

 nearly or quite straight, very slightly oblique, tending posteriorly, prominently 



