C " 1 



Var A. Tarsi piceous. 

 This species Is veiy abundant. 



MADARUS Schoenh. 



M. undulatus Nob. [Rynchaenus] Journ. Acad. Nat. Sc. 

 The thorax varies from sanguineous to black. 



BARIDIUS, Schoenh. 



1. B. trinotatus, Covered with white hairs; a black dot on the scutel and near, 

 the posterior angle of the thorax. 



Inhab. U. S. 



Curculio trinotatus. j 711^15^. Catal. 

 — :: — Pensylvanicus K. S ^ 



Body black, covered with rather short, robust, linear, while prostrate hairs : 

 thorax with the hairs pointing towards the longitudinal middle; at base on each 

 eide is a black dot, scutel black: elytra with obvious striae; interestitial lines flat 

 and each with about three series ofthe short hairs* 



Length three tiventieths of an inch. 



The covering of white hairs, with the three denuded spots distinguish this 

 species. I have obtained it in Indiana as well as in Pennsylvania. 



2. B. picumnus, Herbst. Natursyst. 



VoK 7, p. 30, pi. 99, f. 9. This is a common species. The third joint of 

 the antennae is hardly longer than the fourth. The covering of hairs ii mors 

 dense than in the preceding species. 



3. B. penicellus Herbst. Naturyst- Vol. 7; p. 29, pi. 99, f 6 F. 



Much like the preceding but larger and the third joint ofthe antennae is as 

 long again as the fourth. I described it under the name of amictus but I have * 1 

 little doubt that it is the species described by Herbst. Genus Toxerus Sch. I 

 holosericeus Sch. Dej. 



4. B. undatus, Black; elytra with two undulations. 

 Inhab. Mexico. 



Body black; head with small punctures, sparse on the vertex, more dense on 

 the rostrum; rostrum arquated: thorax a little compressed each side on the an- 

 terior margin; with rather large confluent lateral punctures and smaller sparse 

 ones on the disk; elytra with capillary impunctured striae, becoming rather di- 

 lated at tip; interstitial spaces flat, with numerous transverse lines, a dilated in- 

 dentation or undulation before the middle, and rather behind the middle, a lesi 

 obvious indentation near the tip. 



Length over one fifth of an inch. 



Var. A. Body dark brassy polished; undulations of the elytra obsolete. 

 Length less than three twentieths of an inch. 



The pectoral groove is very distinct, but the antennae are too robust, and 

 the club is too obtuse to be placed in the genus Centrinus, and the fusiform club 

 of Madarus will not permit a reference to that genus. 



5. B. Etriatus, Interstitial lines hardly wider than the striae and with a single 

 eeries of punctures. 



Inhab. U. S 



Body black,punctured; rostrum a little prominent at the insertion ofthe anten 

 nae on each side; more or less transversely indented between the eyes: anten- 

 nae dark piceous inserted beyond the middle of the rostrum; second joint rathsr 

 long; third not longer than the fourth; club obtuse; thorax subconic with approx- 

 imato orbicular punctures and a glabrous middia line; basal edge deeply sinuous 



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