Ceuthorrhynchus.'] RHTNCHOPHORA. 345 



by a series of spots or linear patches, or only 



interrupted at fourth interstice. 

 aa. Thorax shorter, evidently transverse, raised 

 at apex j second joint of the f uniculas of the 



antennae equal to the first C. CHBYSAJJTHEMI, Germ, 



bb. Thorax longer, not or scarcely raised at 

 apex ; second joint of the funiculus of the 



antennae a little shorter than the first. . . C. TRIAKGULUM, Boh. 

 ii. Tarsal claws simple, rather slender.* 



1. Seutellary putch entirely white; tarsi dark; 

 tubercles at sides of thorax completely sur- 

 rounded with white scales C. LITTJBA, F. 



2. Seutellary patch yellowish in middle and white 

 on each side ; tarsi red ; tubercles at sides of 



thorax not entirely surrounded by white scales. C. TEIUACTTLATTTS, F. 



C. assimilis, Payk. (brassiere, Foe.). Oblong-oval, upper surface 

 rather depressed, leaden-black, underside thickly clothed with white 

 scales, upper surface with moderately close grey scales ; rostrum long 

 and slender ; thorax narrowed and considerably constricted in front, 

 closely and rather strongly punctured, with the anterior margin raised, 

 and with a central furrow (which is deeper in front and behind and 

 often more closely covered with scales) ; on each side there is a raised 

 transverse line or tubercle ; elytra with shoulders well marked, and with 

 comparatively fine, but distinct, punctured striae, interstices flat, apex 

 feebly muricate ; legs rather long and slender, femora simple, tarsal claws 

 not cleft or toothed. L. 2-3 mm. 



Male with the posterior tibiae armed with rather a strong hook, and 

 the last ventral segment of the abdomen furnished at apex with a rather 

 broad and shallow fovea ; antennae inserted in middle of rostrum. 



Female with the tibiae simple, the last ventral segment with a small 

 fovea, and the antennas inserted a little behind middle of rostrum. 



On Sisymlrium, Erysimum and other Cruciferee ; the larv have been found in the 

 pods of the cultivated cabbage ; generally distributed and common throughout the 

 kingdom. 



C. syrites, Germ. Allied to the preceding, but much broader, with 

 the thorax at base nearly twice as broad as long, more strongly con- 

 stricted before apex, strongly and deeply punctured, the elytra more 

 broadly and distinctly muricate at apex, with the interstices granulosely- 

 punctate, and furnished with rather broader scales arranged in biseriate 

 rows ; the club of the antennae also is shorter and the tarsal claws are bifid; 

 the black colour of the upper surface has no metallic reflection ; in the 

 female the antennae are inserted further behind the middle of the rostrum 

 than is the case with C. assimilis. L. 2f-3 mm. 



Bv sweeping herbage ; very rare ; found by sweeping in the field opposite the inn 

 at Birch Wood corner, July lltb, 1860, on Silene inflate by Dr. Power ; Birch 

 Wood, July, 1S60 (S. Stevens); Eriih, June 26th, I860; Knowle, Bewdley and 

 Tewkesbury (Blatch). 



* See page 342, twelve lines from bottom. 



