EHYNCHOPnORA. 
251 
very small ; the elytra covering the pygidium ; the 
tibiae not spined at the apex ; and the hooks of the 
tarsi free. 
The species of Apion are very numerous, chiefly fre- 
quenting clover, trefoil, &c. Their larvae have varied 
habits, the majority living in the seeds of Leguminosse, 
some forming a kind of gall on the twigs or leaves of 
plants, others making galleries in their stems, and 
some even attacking their roots. 
The antennae in this genus are composed of twelve 
joints, the club, which apparently has but three joints, 
exhibiting, under a high power, a minute fourth one 
at the apex. The rostrum has on the under side two 
deep antennal grooves, converging from the points of 
insertion of the antennae ; their use is to receive and 
protect the basal joints of the antennae. 
Certain of the yellow-legged species are usually 
very troublesome to beginners, not only on account of 
their minute specific differences, but because the sexes 
vary somewhat. Mr. Walton (p. 39 of his paper 
above mentioned) points out the assistance to be 
derived iu this respect from the coloration of the 
coxa) and trochanters, iu which many species differ 
sexually. One of the most curious in the genus is 
called (and rightly so) diffonne ; its male has the basal 
joints of the antennas much dilated, the basal joint of 
the front tarsi hooked, the middle legs elongate, the 
hinder legs bent, dilated, flattened, and generally dis- 
torted, and a spine to the epigastrium. It is usually 
found on furze, Polygonum, &c. 
therefore joins this genus with Apion, under the sub-family 
Apiidee; it is, however, much moi - e closely connected with 
Clonus . 
