1012 FAMILY LTI. CERAMBYCIDJE. 



larly punctured. All the .joints of hind tarsi densely pubescent beneath, 

 with a smooth median channel. Length .'-47 nun. (Fig. 424.) 



Southern halt' of State; scarce. June 20 -August 7. The fe- 

 males are ahvays much larger than the males. The beetle is known 

 as the "Broad-necked Prionus" and the larvjv are said to injure the 

 grape, apple, poplar and pine by boring into the roots. 



1S77 (5900). PRIOM-S PCKTLAKIS Dalin., Schoenh. Syst. Ins.. I. 1S17, 148. 



More slender and parallel and with antenna? more slender than in Juti- 

 coUis. Dark reddish-brown, shining. Thorax narrower than base of ely- 

 tra, the teeth never reflexed. Elytra with sides straight, almost parallel; 

 sui-face more sparsely and much less roughly sculptured than in laticfillis. 

 Length 25 15 mm. 



Lake County; rare. June 20. Said to occur in the Middle and 

 Southern States. 



1878 (5962). PBIONUS IMBRICORNIS Linn., Syst. Nat., XII, 1780, 022. 



Broad, stout. Dark reddish-brown, 

 shining. Anteimre 18-20-joiuted, male; 

 16-lS-jointed, female ; the joints of male 

 conical, each one hollowed to receive 

 the next and with the lower edge pro- 

 longed ; those of female more slender 

 and simply serrate. Thorax very short 

 and broad, the hind tooth indistinct. 

 Klytra of female more convex than 

 male ; surface roughly and rather dense- 

 ly sculptured. Length 22-47 mm. (Fig. 

 i2. r ,. | 



Knox and Crawford counties ; 



Fig. 425. Male. Natural size. l-carce. July -4-Julv 9. KnOWH RS 



the "Tile-horned Prionus" on ac- 

 count of the joints of antenna 1 overlapping like the tile of a roof. 

 The larva 1 infest the roots of the grape and pear and also feed upon 

 the roots of herbaceous plants. A member of the Austroriparian 

 fauna . 



III. SPHENOSTETIITS Hald. 1845. (Gr., " wedge + breast.") 



Head small, much narrower than thorax; the latter larger, 

 trapezoidal, smooth; prosternum deeply rma ruinate behind for the 

 n ccption of 1he mesost-'mum. 



1X79 (590X). Sl'IIKXOKTICTHUS TASLEl I'.Ut]., Allll. Fl'., 1X41. 39. 



Elongate, tapering behind. I'.lack. feebly shining: elytra often more or 

 less reddish-brown. Antenna' slender, about one-half length of body, slightly 

 compressed and serrate. Thorax narrower at apex, subcoiivex. obtusely 

 toothed near base, surface finely and sparsely punctate. Elytra tapering, 

 separated near apex, tips finely serrate; surface finely and rather sparsely 

 punctate. Length 27-29 mm. 



