374 
Prof. Westwood on Lucanide. 
Vig. 4. Rhetulus crenatus, g (nat. size); 4a, underside of the head 
Soe ON ee 
with basal portion of one of the mandibles, showing the jugu- 
lum, mentum, labial hairs, and terminal joint of the labial 
palpi, and end of one extremity of the second joint of the other 
maxillary palpus; 4b, one of the eyes, seen laterally, showing 
the canthus extended into its upper part; 4c, right mandible, 
seen laterally from within; 4d, maxilla with its palpus; 4e, 
mentum, seen within, showing the labium and labial palpi; 
4f, one of the antennz (mis-lettered 4c, in middle of the right 
side of the plate). 
Dorcus suturalis. 
Dorcus glabripeniis. 
Prate IX. 
Lissotes Launceston, g ; 1a, head slightly magnified. 
Lissotes forcipula, g ; 2a, head much magnified. 
Lissotes furcicornis, g; 3a, head magnified; 3b, maxilla; 3c, 
mentum, with the labrum and palpi detached from within the 
mentum, and represented in front of the latter; 3d, head and 
prothorax of 2 ; 8e, maxilla of ditto; 3f, mentum of ditto. 
Lissotes latridens, g ; 4a, head much magnified. 
Lissotes subcrenatus, 2, head and prothorax; 5b, anterior tibiez. 
Lissotes forcipula, 9 ? (see pp. 367, 368). 
Lissotes Howittanus (see p. 372). 
