coleoptp:ra. 471 



of an elongated heart, truncated posteriorly, form two other subge- 

 nera(l). In 



Helops, Fab. 



Or Helops properly so styled, most of the joints of the antennae 

 are almost obconical or cylindrical, and attenuated at base. The 

 thorax is transversal, or hardly as long as it is v/ide, either square 

 or trapezoidal, or cordiform, abruptly narrowed posteriorly, termi- 

 nated by pointed angles, and always exactly applied to the base of the 

 elytra(2). 



Ljena, Meg., Dej. — Helops, Fab. — Scaurus, Sturm. 



The antennae generally composed, at least in the females, of short 

 turbiniform joints, the last of which is thicker than the precedingones 

 and ovoid. The thorax is almost in the form of a truncated heart, 

 elevated or convex above, separated from the abdomen by a consi- 

 derable hiatus, and with the angles obtuse or rounded. The thighs, 

 particularly the anterior ones, are inflated(3). 



The last Helopii have the body elongated, narrow, almost of the 

 same width throughout(4), and either thick and almost cylindrical, 

 or much depressed. The thorax is nearly square, or almost in the 

 form of a truncated heart. 



Those, in which the body is tolerably thick, almost cylindrical or 

 linear, with the thorax nearly square, and not narrowed posteriorly, 

 form two subgenera. 



Stenotraohelus. — Dry ops, Payk. 



Where the head is elongated, and narrowed posteriorly almost in 

 the manner of a neck; the antennas are abruptly terminated by three 

 joints, shorter and somewhat thicker than the rest; the third is much 

 longer than the following ones(5). 



(1) The two or four anterior tarsi are dilated and pilose beneath in several 

 males. 



(2) The Helops caeruleus, lanipes, caraboides. Fab. 5 the Helops arboleus, gradilis, 

 of Fischer — Entom. lluss., II, xxii, 4, 5 — and several other species foreign to 

 France. I also refer to it the Catops flavipes of the first, which, as well as his 

 Helops obliquatus, seems to form the transition from Amarygmus to the H. cara- 

 boides. 



(3) Za3na^me/ia, Dej., Catal. ; Helops pimelia. Tab.; Scaurus viennensis, Sturm^ 

 Lxna pulchella, Fisch., Entomog. Imp. Russ., II, xxii, 85 var. ? 



(4) Rather narrower before. 



(5) Dryops aenea, Payk.; Calopus aeneus, Gyll.; (Edemera aenea, Oliv. The ^g- 

 nathus decoratus of Germar — Faun. Insect. Europ., fascic. XII, fig. 4 — a sped- 



