490 SUBFAMILY X. CURCULIONINJE. 



and the antenna? almost hidden by the prominent postocular 

 lobes and the sides of the deep pectoral groove; thorax longer 

 than wide, rounded in front; metasternum long, with distinct 

 though narrow side pieces; second ventral segment longer than 

 third; femora rather slender, unarmed; third tarsal joint dilated, 

 bilobed ; tarsal claws small, free, simple. Our species are for the 

 most part stem borers, the larva pupating in its feeding cell. For 

 literature pertaining to them the student is referred to 



Horn, G. H.Proc. Am. Phil. Soc., XIII, 1873, 467469. 

 (Analcis.) 



Casey, Tlios. L. "Coleopterological Notices, IV Tyloderma" 

 -in Ann. N. Y. Acad. Sci., VT, 1892, 448457. 



KEY TO EASTERN SPECIES OF TYLODERMA.* 



a. Body more or less dull, very coarsely, deeply sculptured; thorax with 



large uneven fovese. 765. FOVEOLATA. 



aa. Body smoother and more shining; thorax punctate rather than 



foveate. 



b. Elytra rather thickly clothed with pale yellowish and whitish 

 scales which are condensed in four oblong patches at base and 

 numerous small transverse spots scattered over the surface. 



7C6. MACULATA. 



6&. Elytra glabrous, or very sparsely and unevenly pubescent. 



c. Elytra oval, widest near basal third; thorax very deeply and 

 densely punctate; surface reddish-brown. 767. FBAGARIJE. 



cc. Elytra becoming parallel and straight at sides towards base. 

 d. Surface reddish brown or paler; thoracic punctures coarse, 



uneven and impressed. 



e. Thorax rather longer than wide, more closely and finely 

 punctured near apex; elytra piceous, sparsely mottled with 

 rufous, sometimes almost wholly rufous, the rows of punc- 

 tures regular. 768. VARIEGATA. 

 ee. Thorax scarcely longer than wide, more widened toward 

 base; sparsely and unevenly punctate; elytra wholly red- 

 dish-brown, the punctures in irregular rows toward base. 



769. RUFESOENS. 



del. Surface black or piceous-black, often bronzed, rather shining, 



wholly glabrous; thorax more or less minutely punctate. 

 /. Elytral humeri very narrowly exposed at base. 770. BARIDIA. 

 ff. Elytral humeri broadly exposed. 



g. Punctures of thoracic disc strong though sparse through- 

 out; body rather robust. 771. NIGRA. 

 gg. Punctures of thoracic disc very fine or subobsolete; body 

 narrower. 



*Casey, from whose paper the following synopsis is mainly condensed, states that T. 

 longa Lee. belongs to Cryptorhynchus. 



