I 



C 16 ] 



Curculio myrmex, Hefbst. Natursyst. 



In appearance it has a slight resemblance to a Formicai 



BALANINUS, Gem. ^ 



1. B. pmboscidus, Fabr. (Rynchaeus) Rostrum as long again as the body. 

 This seems to be Curculio Daviesii, Swederus in Transactions of the Stockholm 

 Society, 1787, and it is probable that the latter name is prior to that of Fabr. 



2i B. nasicusj Rostrum not so long as the body or hardly longer, not thickef 

 at base, but proceeding abruptly from the head, rectilinear to the middle, piceous. 



Inhab. Pennsylvania. 



It is remarkable by having the rostrum at base hardly thicker than in the 

 ; middle, in consequence of which it appears to proceed abruptly from the head 

 I without any gradation. 



It is the Curculio nucum of Melsh. Catalogue. 



3. B. rectus, Rostrum rectilinear or very slightly recurved to near the tip 

 where it curves downward ; antennae very slender. 



Inhab. Pennsylvania. 



This is distinguishable by the rectilinear or slightly recurved rostrum. 



4. B. nasutus, Body robust ; scutel elongated white. 

 Inhab. Pennsylvania. 



This species differs from proboscideus, F. in being more robust and iii having 

 the scutel longer. Schoenherr has proposed the name of rostratus for this insect, 

 (in litt.) 



TYLOMUS, Schoenh. 



Ti lineaticollis, Say. [Rynchaenus] Journ. Acad. Nat. Sc. Vol. 3, p. 313. 

 Var. a. much smaller. 



Length exclusive of the rostrum less than one-fifth of an inch. 



It differs also considerably in the lineations of the thorax, and the alternate 

 elevated, interstitial lines of the elytra are less obvious and not so acutely edg- 

 ed. I have named it provisionally palmicoUis. 



ORCHESTES, lllig. 



1. O. ephippiatus, Blackish piceous ; elytra each with two yellowish spots. 

 Inhab. Indiana. 



Body blackish, more or less tinged with piceous, densely punctured .• base of 

 the rostrum piceous : elytra striate punctured, a large double yellowish haii-y, 

 somewhat common spot before the middle and a transverse abbreviated common 

 band of yellowish hair behind the middle, both on a piceous surface ; feet and 

 antennae rufous. 



Length over one-tenth of an inch. 



A very distinct species. 



2. O. pallicornis, Black, antennae rufous with a black tip. 

 Inhab. Indiana. 



Body black, densely punctured: rostrum lineated and punctured; antennae dull 

 rufous, the club darker black: thorax confluently punctured; elytra with punctur- 

 ed striae, the interstitial lines somewhat rough and flat ; thighs with a short 

 acute tooth. 



Length one-tenth of an inch. 



