706 SCIENTIFIC AND APPLIED PHARMACOGNOSY 



is subject to the attack of other insects and a few drops of chloroform 

 or carbon tetrachloride should be added from time to time to pre- 

 serve them. The commercial supplies are obtained chiefly from 

 southern Russia, Hungary (Fig. 312) and Spain and to some extent 

 from Roumania, Poland and Sicily. 



Description. (Fig. 311, A). Oblong, somewhat flattened, from 

 1.5 to 2.5 cm. in length and 4 to 8 mm. in breadth, and of a brilliant 

 green or bluish-green metallic luster, being somewhat golden-green 

 underneath; head triangular, about 3 mm. in length, separated into 

 2 lateral lobes by a longitudinal ridge or furrow; antennae from 4 to 6 

 mm. in length, consisting of 11 uniseriate joints, the upper being 

 somewhat spheroidal and of a black color; mandibles stout and 

 partly concealed; eyes comparatively small; neck distinct; pro- 



FIG. 311. A, Cantharis vesicatoria. B, Mylabris Cichorii. C, Cantharis 



vitta. After Snyder. 



thorax angulate, 4-sided; body covered with fine scattered hairs 

 and having 6 long, hairy, black legs, the first and second pair having 

 5 tarsal joints, the hind pair being 4 parted and having 2 claws at 

 the summit; elytra or wing sheaths elongated, nearly equal, almost 

 completely covering the wings, upper portion finely wrinkled, having 

 a brilliant green metallic lustre and possessing 2 parallel lines; 

 under surface brown; wings 2, membranous, transparent, light brown 

 and longer and broader than the wing cases; odor distinct; pene- 

 trating and disagreeable; taste at first slight, afterwards pungent 

 and very acrid. 



Powder. (Fig. 313). Grayish-brown, with shining green par- 

 ticles and a number of long, pointed, 1-celled hairs about 0.5 mm. in 

 length and 0.002 mm. in width at the base. 



