[ 9 ] 



Length less than two-fifths of an inch. 

 Inhabits Missouri. 



This insect was presented to me by NuttalK 



2v G- operculatus, Rostrum obsoietely truncated ; a frontal dilated punctm'e. 

 Inhab. Mexico. 



^ody black, covered with minute, orbicular^ perlaceous scales: head with s. 

 dilated impressed puncture between the eyes, an obsolete longitudinal sulcus 

 on the short, robust rostrum &; a still less obvious one on each side : thorax 

 canaliculate in the middle : eZj/^ra with series of rather large impressed punc- 

 tures: jfA/!]g-/is with a sinus beneath near the tip. 



Length over seven-twentieths of an inch. 



DERAGANTHUS, Schoenh. 



Subgenus Aracanthus. 



D1 pallidus, Body whitish, varied with pale brown : rostrum not longer than 

 broad, with an impressed very obvious line from the vertex to the tip : eya 

 email : thorax with numerous, small punctures not close set nor very regularly 

 placed ; base not undulated : elytra with regular striae of punctures. 



Inhab. U. S. 



Length over one-tenth of an inch. 



THYLACITES, Germ. 



1. T. microps, Body whitish : rostrum very short & broad : eyes very small> 

 orbicular ; front with an acute impressed line : vertex & thorax a little rough 

 with numerous slight indentations ; scutel not obvious : elytra with their striae 

 & punctures not visible, suture a little elevated :Jeet simple. 



Inhab. Missouri. 



Length less than three-twentieths of an inch. 



Subgenus Strophosomus. Sch. 



2. T. tesselatus, Nob. (Liparus) Jour. Acad. Nat. Sc. 



CALLOPISTUS, Schoenh. (in litt) 

 B. auricepAalus, Nob. (Curculio) Jour. Acad. Nat. Sc. Vol. 3, p. 310. 



TANYMECUS, Germ. 



1. T. lacaena. Body a little cupreous, dull yellowish cinerous, densely punc 

 tured : rostrum with a raised line, tip widely indented above: antennae blackish 

 rufous : thorax with three obsolete blackish vittae j widest a little before the mid* 

 die : scutel very small, cinereous ; elytra with the striae hardly impressed at base 

 but obviously impressed towards the tip, punctures rather large, quadrate ; in- 

 terstitial lines flattened, tip of each with a short joint in the middle. 



Length to tip of rostrum threctwentieths of an inch. 

 Curculio lacaena, Herbst 1 Natursyst. 



2. T. confusus, Much like the preceding but is destitute of the thoracic vittic. 

 Length to tip of the rostrum about three-tenths of an inch. 



APHRASTUS, Schoenh. (in litt.) 



A. taeniatus, Nob. Journ. Acad. Nat. Sc. 



Klylra whitish, second and fourth interstitial lines light brown. 



2 



