THE PLEASING El'NGrS BEETLES. 54!) 



T. cryfhrocephala Lac., length 3.5-4 mm., is known from near 

 Washington, D. C., Georgia and Missouri, while T. inacm Lee., 

 length 5.5 mm., has been recorded from Illinois and near Cincinnati. 

 Ohio. 



1051 (3236). TKITOMA THORACICA S;iy. Journ. Phil. Acad. Nat. Sci.. IV 



1825, 89; ibid. II. 220. 



Oblong-oval. Head and thorax yellow; elytra and 

 apical half of antenna: black ; beneath reddish-yellow. 

 Head and thorax distinctly and closely punctate, the lat- 

 ter with (lie sides rounded and somewhat narrowed in 

 front. Elytral stria' scarcely impressed, finely punctured; 

 intervals sparsely but distinctly punctate. Length 3.5- 

 5 linn. ( Fig. 207.) 



Common on fleshy fungi and beneath bark, in 

 southern half of State; less so in the northern conn- Fi ,, 2n7 . 5 i 

 ties. March 12-September 21. ' (0riiaaL) 



1052 (3230). TKITOMA Fr.AVR-oi.Lis Lac.. Moimg. des Erotyl.. 1S42. 2ls. 

 Oblong-ovate. Head, thorax, antenna- and legs yellow; antennal club. 



elytra and body beneath black. Head and thorax distinctly and rather 

 closely punctate. Elytral strue finely, the intervals sparsely and obsoletely, 

 punctate. Length .",-4 mm. 



Southern half of State, common ; not noted in the northern coun- 

 ties. April 12-Oetober 9. 



Family XIX. COLYDUIKE. 

 THE CYLINDRICAL BARK BEETLES. 



This family includes a limited number of small beetles of an 

 elongate or cylindrical form, which live beneath the bark of trees. 

 in fungi or in the ground. They are closely allied to the Cueujidie 

 and by Casey have been included as one of nine subfamilies of that 

 family.* 



From their near allies they may be known by the following com- 

 bination of characters: antenna- 10- or 11-jointed. rarely S-jointed. 

 inserted under the margin of the front, sometimes gradually thick- 

 ened, but usually terminated by a small one- or two-jointed club; 

 elytra entire, always covering the abdomen ; front coxal cavities 

 either open or closed behind, the coxa* small, globular; hind coxa- 

 transverse, not prominent; abdomen with five ventral segments, the 

 first three or four grown toget her ; legs short. 1 ibia- not dilated ; tarsi 

 four-jointed, claws simple. The small globular front and middle 

 coxa-, thi- four- jointed larsi and the entire elytra, 1'orm a trio of 

 characters which readily distinguish the group. 



*Ann. X. Y. Acad. Sci., V, 1890, 496. 



