OF THE UNITED STAT I - . . > | 



of Anisodactylus, although the paraglossa? are not so much elongated. Our numerous 



species may be grouped as follows. 



a. Corpus pubcscens, elytria interstitiia biBeriatim punotatis: tibiae anticse calcare terminal] utrin- 

 que acute dentato. (A. dilatatus, brunucus, parallelus, obtusus, cum : aliia Bob Dicbiro in- 

 scriptis.) 



b. Corpus glabrum, ellipticuni vel oblongum, tibiis anticis calcare terminal] utrinque acate dentato. 

 \. merula, carbonarius, &c.) 



c. Corpus glabrum, tibiis anticis calcare tcrminali basi latiore, non dentato. (A. nigerrimus, nigrita, 

 californicus, csenus, &c.) 



d. Corpus pubescens, tibiis anticis calcare terminali simplici. (A. femoratus.) 



The first group recedes from the others in the intermediate tarsi <>f the male being 

 sometimes scarcely dilated: the 2d and 3d joints of the anterior tarn arc Btrongh trans- 

 verse, and the 4th not deeply bilobed; there arc, however, some species of group (c) in 

 which the middle tarsi are much less dilated than the anterior pair, while the species of 

 group (b) have the 2d and '.U\ joints of the anterior tarsi as Btrongly transvt rse as tb 

 of Dichirus. We would not, therefore, be justified in considering the latter as a distinct 

 genus. 



Spongopus still contains only the typical species S. verticalis Lee. (Ann. Lye. I, 

 378,) it seems closely allied to Diachromus Er., but differs in having only a single long and 

 slender spur at the end of the anterior libioo. 



Xestonotus Lee. 

 This genus is established upon Sclenophorus lugubris Dej., which, from the form of the 

 anterior tarsi of the male, I formerly placed in Anisodactylus: the ligula however dil 

 essentially from that genus; it is truncate at tip, and not dilated, furnished with two long 

 bristles: the paraglossse are Blender and curved, not extending beyond the ligula: the 

 emargination of the chin is rounded. The anterior and middle tarsi of the male have the 

 firs! joint Blightly dilated, the two next broader and transverse, the fourth broad and deeply 

 bed: the spur of the anterior til imple, and moderately -lender. The diagnosis 



of the species will be : 



\. lagubr is, oblongns, niger, opacus, capite maiuscolo, tborace latitadine Besqui breviore an) 

 _'ulis posticis obtnsis, ad basin ntrinqne late leviter im] 

 . elytris interstitiia vix convezis, 3 !o postice unipuncum, antennarom articnlo I palporun 



rufis. Long. • 1. 



1.1 KVI I!|c III a /."-. 



This genus has been described at length by me in the lib volume ol the Lnnals of the 

 Lyceum : it contains Feronia ter minalis Say, (of which I farpalue i Hald. I'i • ■■ . 



Ac. Nat. Sc. l. 302, is a variety ;) Harp, a gili s Dej.; E. pic< u I c; E. nitidipeni 

 Lee* and a large species from Louisiana, sent by M< 3sr . W apler and Salle, under the 

 name Harp, dulcicollis Vcrtc (lie v. Zool. I s 1 1,) with the di scription of which it bj no means 



' II di D . and H. vnl] ijf, do not beloi [formed) u* 



VOL. K . 



