COLEOPTERA. 61 



Those, in which the thorax is inflated above, ovoid and truncated 

 at both ends, narrower throughout than the abdomen, with simple 

 antennae enlarging towards the extremity, and all the tibiae narrow, 

 long, and curved or arcuated, form the 



Spy^rotus, Kirhy *. 



The same naturalist comprises under the generic appellation of 



Adelium, Kirb. — Calosoma, Fab. 



Helopii, of an oval form, with the thorax wider that it is long, 

 almost orbicular, emarginated before, truncated behind, dilated and 

 arcuated laterally, and with almost filiform antenna;, of which most of 

 the joints are in the form of a reversed cone. They more particu- 

 larly inhabit New Holland f- 



Those species, in which the body forms an oblong oval, insensibly 

 arcuated and convex, or almost straight above, with simple antennae, 

 either filiform, or s,omewhat larger towards the extremity, particu- 

 larly in the females, and the thorax is almost square, or in the form 

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

 genera \. In. 



Helops, Fab. 



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

 are almost ob conical or cylindrical, and attenuated at base. The 

 thorax is transversal, or hardly as long as it is wide, either square 

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

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

 elytra §. 



LlEXA, 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 preceding 

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

 heart, elevated or convex above, separated from the abdomen by a 

 considerable hiatus, and with the angles obtuse or rounded. The 

 thighs, particularly the anterior ones, are inflated ||. 



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

 same width throughout ^, 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 



* Sphcerotics curvipes, Kirb., Lin. Trans. XXI. 15. 



f Adelucmcalasomoides, Kirb., Ibid., XII. xxii, 2. 



X The two or four anterior tarsi are dilated and pilose beneath in several males. 



§ The Helops caruleiis, lanipes, caraboides, Fab. ; the Helops arholeus, gracilis, of 

 Fischer — Entom. Russ., II, xxii, 4, 5 — and several other species foreign to France, 

 lalso refer to it the Catops flavipes of the first, which, as well as his Helops obli- 

 quatus, seems to form the transition from Amarygmus to the H. caraboides. 



11 L^na j;ime/ia, Dej., Catal. ; Helops pimelia, Fab.; Scaurus viennensis, Sturm; 

 LeEna pulchella, Fisch., Entomog. Imp. Russ., II, xxii, 8 ; var. ? 



^ Rather narrower before. 



