1044 



FAMILY LII. — CERAMBYCIDiE. 



end, the outer ones velvety black; vertex prominent, deeply sul- 

 cate ; front horizontal ; prosternum very narrow between the front 

 coxae, which are large and conical, the cavities open behind; legs 

 slender, tarsi broad, the first joint of hind ones scarcely equal to 

 the two following united. 

 j 



XXXVIII. Desmocerus Serv. 1835. (Gr., "band + horn.") 



One of the four species occurs in the eastern United States, the 

 other three on the Pacific slope. 



1931 (6221). Desmocekus palliatus Forst, Nov. Spec. Insect., 1771, 40. 

 Elongate, robust. Dark blue ; basal third of elytra orange-yellow. Tho- 

 rax bell-shaped, widening gradually from apex to base, hind angles acute, 

 disk with transverse wrinkles. Elytra parallel, tips obliquely rounded ; sur- 

 face densely and rather coarsely punctured, each with three fine raised lines. 

 Length 17-23 mm. 



Posey County; scarce. July 6. Occurs on the flowers and foli- 

 age of elder, Sambucus canadensis L., in the stems of which the 

 larvae bore. 



. Tribe III. NECYDALINI. 



Readily known by the short elytra, which are scarcely longer 

 than the thorax, separated near apex and rounded at tip. The eyes 

 are finely granulated, large, oblique and deeply emarginate; an- 

 tennae filiform, second joint small, third and following equal in our 

 species; scutellum elongate, triangular; front coxae conical, prom- 

 inent, the cavities closed behind; legs slender, hind pair much 

 longer, first joint of hind tarsi much longer than all the others to- 

 gether. One of the two genera is represented in the State. 



XXXIX. Necydalis Linn. 1758. (Gr., ' ; chrysalis of the silk 



worm.") 



In this genus the third and fourth antenna! joints are together 

 longer than the fifth and the last joint of palpi is bell-shaped. 



1932 (6225). Necydalis mellitus Say, Bost. Journ. Nat. Hist., I, 1835, 



194; ibid. II, 664. 



Elongate, slender. Black ; abdomen, front and middle legs and basal 

 joint of antennae dull yellow ; elytra reddish-brown, often with paler spot 

 at tip, sometimes dull reddish-yellow with darker apex; hind legs dusky. 

 Head sulcate between the antennae, coarsely and densely punctate. Thorax 

 subcylindrical, constricted in front of middle and with a blunt tubercle each 



