G5G FAMILY xxvn. LATHRIDTID.T;. 



66. Thorax but slightly narrower than elytra. 



c. Eyes minute, situated at about their own length from the hind 



angles of the head. 



(7. Elytral intervals 3, 5, 7 higher than the others. COSTULATA. 



(/</. Elytral intervals snbeqnal; form mure narrow. FILJFORMIS. 



re. Eyes much larger, occupying the hind angles. ARGUS. 



ad. Aiiteunal club two-jointed; thorax with a large rounded fovea on front 



of disk. FILTJM. 



1259 (37SG). CARTODERE RUFICOLLIS Marsh., Ent. Brit., I, 111. 



Elongate, slender, snbconvex. Pale reddish-brown, elytra darker. An- 

 teuual club rather abruptly three-jointed, its first joint large, orbicular; 

 second less thick, elongate-oval ; third small and subglobular. Thorax sub- 

 cordiform, sides rather strongly rounded in front of middle, deeply con- 

 stricted near base; surface densely and rather finely punctate. Elytra 

 elongate-oval, each with seven rows of coarse, closely-set punctures; inter- 

 vals narrow, very feebly convex except the sixth, which is more prominent. 

 Length 1-1.3 mm. 



Howard County; frequent locally about a barn. June 24. An 

 introduced species widely distributed throughout the United States. 



C. costidata Reitt. and C. filiform is (Ml., both reddish-yellow 

 and 1-1.5 mm. in length, are known from Michigan and near Cin- 

 cinnati; C. argus Reitt. and C. filuni Aube, also dull reddish-yellow, 

 length 1.3 to 1.6 mm., range from Canada, Michigan and westward. 



Tribe II. CORTICARIINI. 



This tribe has the thorax without distinct sculpture, its sides 

 more or less crenulate or denticulate, the disk with nearly always a 

 rounded or transverse impression before the base ; front coxae 

 usually continguous or nearly so ; abdomen with five or six ventral 

 segments; elytra without costte but with hairs arranged in rows. 

 Three genera compose the tribe, two of which are represented in 

 Indiana. 



KEY TO INDIANA GENERA OF CORTICARIINI. 



(i. Abdomen of female with five segments, a sixth usually visible in the 



males; form more elongate. IV. CORTICARIA. 



aa. Abdomen of both sexes with six segments, except in pk-ta, where the 



male has but five; form more oval. V. MELANOPHTHALMA. 



IV. CORTICARIA Marsh. 1802. (Let,, "bark.") 



Small elongate or oblong-ovate species having the pubescence 

 more or less long and conspicuous, that on the elytra arranged in 

 rows; eyes large and rather prominent; antenna usually not quite 

 reaching the hind angles of thorax, ll-joinled, the club 3-jointed; 

 thorax usually subcordate. with front and hind angles obtuse, sur- 



