180 
Mr. J. O. Westwood on Lamellicorn Beetles. 
Plate XII. 
Fig. 1, Cryptogenius Miersianus ; 1a—1 i, details. 
1a, underside of front of body, showing the mode in which the head folds 
into the anterior cavity of the prosternum; 1), underside of head ; 
le, mandible; 1d, maxilla; le, instrumenta labialia; 1/f, labial 
palpus removed; 1g, antenna; 1h, areolated punctures of the pro- 
notum; 1i, striation of elytra. 
2a—2c, details of Geobius Dorcas. 
2a, mandible; 2b, lobes of maxilla; 2c, antenna. 
3a—38e, details of Ochodeus chrysomelinus. 
3a, labrum; 3b, 3c, mandibles; 3d, maxilla; 3e, antenna. 
4a—4e, details of Triodontus nitidulus. 
4a,labrum and mandible; 4b, mandible; 4c, maxilla; 4d, instrumenta 
labialia; 4e, antenna. 
5a—5d, details of Hgidiwm? Guianense. 
5a, clypeus, labrum and mandible; 56, mandible; 5c, maxilla; 5d, in- 
strumenta labialia. 
6, £gidium parvulus ; 6a—6h, details. 
6a, front of head; 6, labrum; 6c, mandible; 6d, maxilla; 6e, instru- 
menta labialia; 6, labium and labial palpus; 6g, antenna; 6h, part 
of antenna of 4g. hedulus. 
7, Hgidium Columbianum, male ; 7 a—7 b, details. 
7a, head and prothorax seen from the front; 7 b, the same seen laterally. 
8, Egidium Columbianum, female. 
9, Orphnus meleagris ; 9a—9i, details. 
9a, front of head; 9b, mandible; 9c, maxilla; 9d, instrumenta Jabialia ; 
9e, antenna; 9f, head and prothorax seen sideways ; 9g, extremity of 
anterior tarsus and ungues; 9h and 9i, extremity of antenne of 
Orphnus picinus. 
