H^ ORDER COLEOPTERA. 



Lamta . ( Plate xxvi, fig. 9.) 



Color gray, and banded. Thorax spined at the sides : face marked with an impressed line, 



depifssod between the antennsB ; antennte ten-jointed, first joint narrowed at base, 



second joint slightly longest, the upper half of each very black, the lower half gray. 



Front of the thorax is marked by a black transverse line, in the rear of which there 



are two small i>lack spots : posterior part of the thorax is punctured with black, 



especially the transverse groove. Elytra thickly and coarsely punctured with black, 



and traversed by four belts, the two front ones incomplete : they are zigzag in form, 



and interrupted by gray spaces. Abdomen narrowed somewhat behind, and terminated 



by a black ovipositor. Femora thickened, and clavate at the tibial end, gray : tibise 



marked by black rings ; tarsi black. Post-pectus deeply emarginate and giay. 



The foregoing is a rare species in this vicinity. Its ovipositor shows that its eggs are 



deposited in wood, and hence it is an injurious insect to timber. Length, including the 



ovipositor, seven-eighths of an inch. 



Tetraopes TETROpiiTHALMA (Forster). M. tcmator {T&h.). (PI. v, fig. 11.) 



Color brick-red. Thorax marked with four black dots arranged in the form of a square. 



Elytra marked with four black dots ; two near the basal angles, and two placed 



longitudinally upon the middle. Antennse black : body beneath and legs black. 



This insect is common on the silkweed ( Asdepias syriaca ) in June and July, and is 



extensively distributed, extending from Massachusetts to Carolina ( Haldeman's Mat. 



Hist. Long. Am. Phil. Soc. x, 53). It is a harmless insect in its mature state. 



Elaphidion tillosum ( Fab.). E. putator ( Peck). ( Plate xvi, fig. 8.) 



Color brown, gray or hoary from patches and stripes of grayish down : thorax more 

 villose than the elytra. Antennte spinous : the second joint armed with a spine as 

 long, or nearly as long as the third joint ; the spine of the third joint, one-third as 

 long as the fourth joint ; on the fourth joint, the spine is shorter still. El}'tra punc- 

 tured, and apex spined. Beneath, the same color as above : legs villous; hindlegs 

 armed with a short spine. 

 Although about a dozen species of this genus have been discovered in the United States, 

 the habits of this one only are known. The larva feeds upon the wood of whiteoak or 

 blackoak,and more rarely of hickory and chesnut ; and on one occasion I reared a speci- 

 men, apparently of this species, from a larva taken from the dead trunk of a small sprufe 

 tree. The insect is half an inch or more in length, and may be distinguished by its chesnut 

 color, varied with yellowish spots of down ; the small spine upon some of the joints of the 

 antennse, and two upon the tip of each elytron ; and by the smooth raised medial line, 

 and tubercle, upon each side of the pronotum above. 



