A. E. Verrill — The Bermuda Islands. 



791 



identified by Dr. Horn. Specimens have been received by me from 

 several correspondents. Common in the southern United States. 



It is said to be very injurious to sweet potatoes by tunnelling both 

 in the stalks and tubers. It also attacks various other crops, such 

 as the Irish potato, carrots, celery, beets, corn, sunflower, etc., by 

 boring in the roots. The larva feeds both on manure and on the 

 roots of grasses and other plants.* The color of the mature beetle 

 is dark chestnut, chocolate-brown or black ; paler when recently 

 emerged. The prothorax is thickly, finely punctate, and the elytra 

 have coarsely punctate grooves, unequal in size. It comes freely to 

 lights and fiies very erratically. Length 15— 1 V mm . 



166 165a 1656 165 



167 



166a 



Figure 165. — Hard-back, x 1%, from a photograph, by A. H. V. Figures 

 165a, 1656. — Sugar-cane Borer; Com Borer (Ligyrus rugicejjs), nat. size 

 and enlarged. Figure 166. — Ptinus fur and larva, enlarged. Figure 

 166a. — Bread-beetle (Sitodrepa paniceci) ; a, imago, x4; b, larva, x 3. 

 Figure 167. — Cigarette Beetle (Lasioderma scrricorne) ; x 6| ; a, dorsal ; b, 

 profile view. From Webster's International Dictionary ; after Chittenden ; 

 166 after Packard's Guide. 



A closely allied, very injurious species {L. rugiceps), figs. 165a, 

 165 b, tunnels in the base of the sugar-cane stalks in the West Indies, 

 and will, perhaps, be found here in corn, which it often attacks 

 in the same manner. 



Sard-Back. [Ligyrus tumulosus Burm.) Figure 165. 



This species was recorded in 1889 by Professor Heilprin, on the 

 authority of Dr. G. H. Horn, (Bermuda Islands, p. 92.) 



* L. Mowbray, who sent the adult larva in December, says that it damages 

 arrowroot and potatoes. 



