SUBFAMILY XII. COSSONIN.T]. 



828 (- -). Cossoxus HAMILTONI Slosson, Can. Ent, XXXI, 1899, 193. 



Black, shining, basal half of elytra, metasternum and abdomen rufous; 

 antenna? and legs dark red. Beak stout, finely and closely punctate, very 

 abruptly and almost transversely quadrangularly dilated at apex, the dilated 

 portion barely as long as the basal. Thorax oblong, with a triangular 

 depression from base to near apex, in which the punctures are coarse and 

 irregular, though smaller and more regular at sides. Elytra slightly 

 wider than base of thorax, surface deeply striate at base, striae with close 

 deep punctures, but not impressed on apical portion. Length 2.9 mm. 



Miami and Ft. Worth, Fla., beneath bark of dead rubber tree, 

 Ficus aurea L. First collected by Dr. Hamilton at Ft. Worth. 

 Occurs also in the West Indies. 



829 (9023). Cossoxrs PLATALEA Say, 1831, 24; ibid, I, 292. 



Elongate, parallel. Black, strongly shining, antenna? and tarsi red- 

 dish-brown. Head rather finely and sparsely punc- 

 tured. Beak two-thirds as long as thorax, basal 

 portion longer than apical, the latter rather sud- 

 denly quadrangularly dilated, finely and closely 

 punctate. Thorax as wide or wider than long, apex 

 rather suddenly narrowed, sides strongly and regu- 

 larly curved; disc flattened, the punctures at sides 

 denser and finer, at middle somewhat coarser and 

 more distant. Elytra slightly broader than middle of 

 thorax, flattened, striate, rather coarsely and serrate- 

 ly punctured; intervals flat, very minutely uniseriate- 

 ly punctate. Length 5.5 6.5 mm. (Fig. 116.) 



Frequent beneath bark of butternut and 

 elm throughout Indiana March 29 Sept. 12. 

 Ranges from New England and Canada south 

 to Virginia, west to Iowa; beneath bark of 

 butternut, walnut, poplar and pine. Van Dyke does not consider 

 the pine a normal food plant. Specimens occur with the sides 

 almost parallel which are very difficult to separate from siib- 

 <irc<i fits. Van Dyke says itlatalca can be separated by its 

 "broader thorax, slightly more prominent eyes and shorter basal 

 portion of rostrum." 



C. boliemanni Horn, a name proposed for platalea Boh. (nee. Say), re- 

 presents (fide Van Dyke) an atypical specimen or an inaccurate de- 

 scription with which no specimen can be reconciled. The name is there- 

 fore to be dropped from our lists. 



830 (9024). COSSONUS SUBAREATUS Boh., Schon., 1845, 266. 



Black, shining. Head smooth; beak rather coarsely, closely punctate, 

 one-half as long as thorax, basal portion longer than apical, which is one- 

 third broader than its neck and quadrangularly dilated. Thorax slightly 



Fig. 116. X 

 (After Felt.) 



