and its Neo-Tropical Allies. 63 
robust faith to believe that ‘‘the action of external causes 
is alone able to bring about these variations” generally 
so very decided as regards species, but so extremely 
eraduated when examined singly.* 
In the arrangement of the species described below I 
have followed Schonherr.t It is a purely artificial 
arrangement, tending, as lLacordaire observes, to 
separate nearly allied species; still it is more con- 
venient to follow in a detached article like the present ; 
indeed no other would be possible without an examination 
of all the species. 
Hinievus. 
The two basal joints of the funicle equal or nearly equal 
in length. 
Apex of the elytra rounded, or, each elytron slightly 
acuminate. 
Elytra without tubercles or granules. 
Hilipus medullosus. Hilipus respiciens. 
Se RerUs:. » vestttus: 
»  commodus. 3) empuricus: 
5 @ultcus. »  tnsidiosus. 
»  mysticus. 5,  decorus. 
» collectus. 49. spectator: 
» —poecius. »  suspensus. 
5  nudipennis. »  tetanicus. 
5) » posticus. » erculatus. 
Elytra with the alternate interstices raised. 
Hilipus hipporhinoides. 
Elytra with tubercles or granules. 
Hilipus contumax. Hilipus grammicus. 
»  cratosomordes. »  obesulus. 
| SeLeris. »  caliginosus. 
»  adwversus. » vappa. 
»  dausterus. »  scabrosus. 
»  aspredo. »  tndutus. 
»  awntensus. » ~ deprictus. 
* «There is a tendency to vary, due to causes of which we are 
quite ignorant.”—Darwin, ‘ Origin of Species,’ 6th ed., p. 107. 
+ Gen. et Sp. Curcul., tom. vii., pars ii., p. 27 e¢ seq. 
