NO. 1988 STUDIES OF NORTH AMERICAN WEEVILS— PIERCE. 399 



densely squamose with mottled scales, all intervals setigerous, under- 

 sides densely clothed with lighter scales, sparsely setose, metasternal 

 side-pieces not visible. First ventral suture shghtly arcuate; sec- 

 ond ventral segment not as long as the two following. Legs squa- 

 mose; femora short and strongly inflated; tibiae mucronate, denticu- 

 lose and spinose; corbels cavernous. 

 Type.— Cat. No. 14645, U.S.Nat.Mus. 



rUROXO&N'j^TIIIN"^, new siabfamily. 

 Genus DIROTOGNATHUS Horn (1876). 

 Dirotognathics Horn, Proc. Amer. Philos. Soc, vol. 15, 1876, p. 79. 

 The genus is monotypic, based on sordidus Horn. 



Subfamily PROMIECOI'IIsr.^: Fierce (1911). 



Table of genera of Promecopinse . 



1. Beak strongly dilated at tip; scrobes meeting beneath the eyes; mesosternum pro- 



tuberant Colecerus Schonherr. 



2. Beak very feebly dilated, cylindrical, flattened; scrobes not meeting beneath the 



eyes, but turning forward; mesosternum not protuberant, 

 a'. Elytra broadly oval, scutellum small; metastemum short. 



Aracanthus Schonherr. 

 a^. Elytra oblong, broader at base than the thorax, scutellum transverse; metas- 

 temum moderately long Eudiagogus Schonherr. 



Genus COLECERUS Schonherr (1840). 



Colecerus Schonherr, Gen. et Sp. Cure, vol. 5, 1840, pt. 2, p. 928. 

 Coleocerus Gemminger and Harold, Cat. Coleopt., vol. 8, 1871, p. 2374. 



The originally designated type is setosus Schonlierr, of Mexico. 

 Genus ARACANTHUS Schonherr (1840). 

 Aracanthus (Say) Schonherr, Gen. et Sp. Cure, vol. 5, 1840, pt. 2, p. 822. 

 The originally designated type is pallidus Say, 



Genvxs EUDIAGOGUS Schonherr (1840). 

 Eudiagogus Schonherr, Gen. et Sp. Cure, vol. 6, 1840, pt. 1, p. 307. 

 The originally designated type is episcopalis Gyllenhal, of Brazil. 



Subfamily TAJST^STnyLECIN.^] Pierce (1911). 



Table of tribes of Tanymecinx. 



1. Ocular vibrissse always present ; front coxae contiguous. .Tan ymecini Horn (1876). 



2. Ocular vibrissto frequently lacking; front coxse separated. 



Pandeleteini, new tribe. 



