138 RHYNCHOPHORA — CURCULIONIDAE. 



punctured striae, interstices flat, finely wrinkled, with 

 small tubercles before apex. L. 1 — 1| 1. Scarce, 



C. rapae, Gyll. 

 2, Ground colour of elytra blue or black-blue. 

 A A. Interstices on elytra flat. 



a a. Elytra with short erect bristles and with- 

 out white spot at base of suture. 



A a. Elytra blue ; length 1^ — If lines. 



Black ; elytra blue ; under-side not closely covered with 

 grayisli scales. Thorax strongly constricted toward apex, 

 anterior margin raised, disc coarsely punctured, with rather 

 deep central furrow and small lateral tubercles ; elytra with 

 punctured striae ; interstices flat, with a regular row of 

 punctures, spined before apex. Not uncommon. 



C. cyanipennis, Germ. 



B h. Elytra black-blue ; length f line. 



Black ; elytra black-blue ; under-side with gray scales. 

 Thorax constricted toward apex, deeply punctured, with 

 central furrow and lateral tubercles ; elytra with narrow 

 punctured striae, interstices flat, spined toward apex. Not 

 uncommon. C. hirtulus, Gyll. 



6 b. Elytra without bristles and with white 

 spot at base of suture. 



Short ovate, convex. Black ; elytra blue, suture black, 

 with white spot at base ; apical margin of under-side of 

 thorax reddish; under-side (especially at shoulders) closely 

 covered with wliite scales. Thorax broader than long, 

 slightly constricted toward apex, anterior margin slightly 

 raised, strongly punctured, with a central furrow and some- 

 what pointed lateral tubercles ; elytra with distinct, obso- 

 letely punctured striae, interstices flat, finely wrinkled. 

 L. 1 1, Eare. C. suturellus, Gyll. 



JB JB, Interstices on elytra convex. 



Short ovate, rather convex. Black, somewhat shiny; 

 elytra blue ; under-side closely covered with grayish 

 scales. Thorax transverse, constricted toward apex, deeply 

 punctured, with central furrow and lateral tubercles; elytra 

 with punctured striae ; interstices convex, wrinkled, with 

 recumbent gray hairs and erect blackish bristles, with 



