THE LAMKU.H'OKN I'.K KTI. KS. 945 



1783 (5022). TROX CAI-JI.LARIS S;iy. Journ. 1'hil. Acad. Nat. Sd., Ill, 1824, 



238; ibid. II. !::!>. 



< Hilong-uval. Grayish or fuscous; when clean often purplish. Clypeus 

 broadly rounded; front with four small tufts of brownish hairs. Thorax 

 with sides feebly curved, gradually wider to base, the median groove shal- 

 low but entire, surface each side roughly punctured. Elytral tubercles 

 feebly elevated, widely distant; intervals with minute tubercles or granules, 

 these subobsolete on the sides; intervals one to three each with four slightly 

 elevated broken lines. Length 0-10.5 mm. 



Southern half of State; frequent. April 12 December 25. 

 Clean specimens can be quickly recognized by the fine "capillary 

 lines" on the intervals near the suture. Say's specific name was 

 based on the presence of these lines. 



1784 (5G23). TROX UNLSTRIATUS Beauv., Ins. Afr. et Amer.. 1805, 175. 

 Elongate-ovate. Dull brownish-black. Clypeus rounded. Thorax one- 

 half broader than long, sides nearly straight, curved on apical fourth, hind 

 angles rectangular, median groove feeble; surface coarsely punctured and 

 with a large irregular depression each side near the groove and another 

 near the margin, these usually concealed by dirt. Elytra! tubercles elon- 

 gate, slightly separated, thus forming elevated interrupted lines, each of 

 these with two rows of very short brown, scale-like hairs; intervals each 

 with a row of minute brownish tufts of hair and two rows of large, trans- 

 verse, shallow punctures. Length 9.5-11.5 mm. 



Southern half of State ; frequent. May 2-June 10. Larger than 

 capillaris, and readily distinguished by the carina-like lines of 

 elytral tubercles and the larger and more distinct rows of punctures. 



1785 (5624). TROX SORDIDCS Lee.. Proe. Phil. Acad. Nat. Sci., VII, 1854. 211. 

 Oblong-oval, broader behind. Dull black. Clypeus broadly rounde;!. 



Thorax two-thirds wider than long, sides nearly straight, ciliate with very 

 short hairs; median groove slightly interrupted, its sides somewhat sinuous; 

 surface roughly punctured and with a rounded impression each side on 

 basal half. Elytra each with four rows of tubercles, those on basal half 

 of first and second rows more elongate; intervals each with a single row of 

 small distant tubercles. Front tibue finely toothed above the median tooth. 

 Length 0-8 mm. 



Jennings, Putnam, Du'oois and Posey counties; scarce. April 

 24-May 12. This and the remaining five species are all small in 

 size and difficult to separate. This is the largest of the six, more 

 robust and broader behind the middle. It resembles titlx rci/lol us in 

 form and sculpture, but is distinctly smaller and has the scales of 

 the tubercles much paler. 



1780 (f.025). TROX IXSULARIS Chev.. Col. Mex.. 1835. 



Ovate. Dull piceons or blackish-brown. Clypeus subangulate at mid- 

 dle; front, with four obtuse tubercles. Thorax with sides feebly curved, 

 margins ciliate; disk with the median ridges strongly sinuous, converging 



