COLEOPTERA. 57 



which the club of the antennae is formed by the last five joints, and 

 the preceding ones are slightly secviriform *. 



Those, in which the three last alone form the club, and the three 

 preceding ones, are in the form of reversed cones without an inte- 

 rior projection, compose the genus Coxelus f . 



Our second tribe of the Taxicornes, the Cossyphenes, consists of 

 Insects analogous in form to the Pellis of Fabricius, and to several 

 Nitidulae and Cassidi^ ; it is ovoid or sub-hemispherical, and over- 

 lapped in its contour by the dilated or flattened sides of the thorax 

 and elytra ; the head is sometimes entirely concealed under that tho- 

 rax, and at others received into an interior emargination of the same 

 part. The last joint of the maxillary palpi is larger than the pre- 

 ceding ones, and securiform. 



This tribe is composed of the genus 



CossYPHus, Oliv. Fab. 



Some of them have a flat body, of a solid consistence, in the form of 

 a shield, and antennae terminated by a club composed of fo\ir or five 

 joints ; they are peculiar to the eastern continent and to New Hol- 

 land. Such are those which form the 



CossYPHUS, Oliv. Fab. 

 Or Cossyphus properly so called, where the almost semicircular 

 thorax presents no anterior emargination, and entirely conceals the 

 head ; Avhere the antennje are short, and terminate abruptly in an 

 oval mass of four joints, most of which are transversal; the second 

 of the whole number and the following ones are almost identical. 



These Insects inhabit the East Indies, southern part of Europe, 

 and north of Africa I. In 



Hel^us, Lat. Kirb. 

 The head is received into a deep emargination or median aperture 

 of the thorax, and is exposed at least superiorly. The antennae, at 

 least as long as these two parts of the body taken together, termi- 

 nate almost gradually in a narrow, elongated club, formed by the 

 last five joints, the last of which is ovoid, and the preceding ones 

 turbiniform ; the second of the whole number is shorter than the 

 third. — They are peculiar to New Holland §. 



The others, where the head is always exposed and simply received 

 into a deep notch in the thorax, have a convex, soft or but slightly 

 solid, almost hemispherical body, and granose antennae, nearly equal 



* See the Catalogue, &c., Dej., p. 68 ; but refer my Eledona spinosida to the 

 genus Coxelus. 



t Catalogue, tkc, Dej., p. 67. The Cis, in a natural order, seem to approach 

 these Insects. 



X Lat., Gener. Crust, et Insect. II, p. 4. 



§ Cuv. R^gn. Anim., Ill, p. 301, IV, xiii, 6; — Hdceus Broimii, Kirb., Lin. 

 Trans., XII, xxiii, 8. 



VOL. IV. P 



