VOL. 45. 



5^5 PROCEEDINGS OF TH E NATIONAL MUSEUM. 



The centro-sternal piece of the prosternum is a tiny piece behind or 

 separating the epimera. The term was first used by Sharp ' Everts 

 m the following year published "Quelques remarques a sujet d'une 

 Etude de Mr. David Sharp sur la structure du prosternum dans les 

 Rhynchorides.' ^ This is a character which merits considerable 

 study. 



This table in a measure follows Desbrochers. If the definition of 

 Deporaus is correct, our glastmus LeConte must be assigned to 

 nhynchites or a new genus. 



Genus DEPORAUS Leach (1819). 



Platyrhjnchus Thunberg, Nov. Act. Upsal., vol. 7, 1815. 

 Deporaus Le.\cii, Samouelle's Compendium, 1819, p. 201. 



The genus Deporaus is monotypic, based on letulx Lmnseus. 

 Crotch (1870) designated the same species as type of PUtyrhynchus. 

 llie latter name is preoccupied by Desmmes (1805) in Aves. 



Genus EUGNAMPTUS Schonherr (1839). 

 Eugnamptus Schonherr, Gen. Cure, vol. 5, 1839, p. 339. 



The type was originally designated as collans Fabricius. 



The sexes of this genus are readily distinguished by the male beak 

 bemg shorter, eyes larger and closer together, and by the male mandi- 

 bles being externally one-toothed, while the female mandibles are 

 externally two-toothed. 



Table of species and varieties of Eugnamptm. 

 ^' ^^f^^^^^^^''^^'^^' narrower than the striae; eyes in male not greatly larger thaa in 



1. Interspaces very convex; strial punctures large, quadrate, crowded; head 



strongly punctured in male, more moderately in female; front foveate in 

 female and medially sulcate in male; black or piceous black, head and thorax 

 reddish. Florida. Length 4.^5 mm striatus LeConte 



2. Interspaces almost flat; strial punctures round, less crowded; head strongly punc- 



tured; front more or less sulcate; testaceous, elytra sometimes piceous black 

 or clouded. Maryland to Florida and Kansas. Length 2.7-^ mm. 



TT TT'i i 1 • ^ . puncticeps LeConte. 



II. Elytral interspaces as wide as or wider than the striae; eyes in male considerably 

 larger than in the female and much more approximate. 



3. Elytra bluish. 



a^. Head finely punctured 



Elytra bluish green; elytral interspaces flat; front sulcate; prothorax 

 strongly punctured, medially depressed or sulcate; head, thorax, antenna 

 and legs reddish, venter black. Arizona. Length 5-6 mm. 



7>2 i?i ^ n • 1 , , , nigriventris Schaeffer. 



b^. Elytra bluish black. 



» Trans. Ent. Soc. Lond., 1889, pt. 1. 



« Tijdschrift voor Entomologie, vol. 32, for 1889-1890 (1890), pp. 349-353, pi. 15. 



