40 HYPOCEPHALUS. 
onus pilosicollis (Hope in Trans. Ent. Soe. vol. 1, pl. 2, fig. 1.), and 
in Cantharocnemis Spondyloides, Dupont, an uncharacterised genus 
from Senegal. Another curious character, to which perhaps but 
little weight ought to be given, is the great length of the basal, and 
the shortness and triangular form of the terminal jot of the palpi. 
I have, however, found securiform maxillary and labial palpi in a 
curious Prionus, obtained by Mr. Raddon from raw turpentine 
(Hoplopteryx denticulatus, Westw. ined.). ‘The minuteness of the 
labium or ligula is also to be noticed, since in almost all other 
Longicorns it is visible beyond the base of the labial palpi. 
Having elsewhere suggested that Spondylis is more nearly allied 
(from its larva) to the Lepturide than to the Prionide, and Hypo- 
cephalus, being more allied to Spondylis and Cantharocnemis than 
to the other genera mentioned by Burmeister, it becomes interesting 
to speculate on the degree of relation which Sagra (so nearly allied 
to Leptura) bears to Hypocephalus. - 
DESCRIPTION OF PLATE X. 
Fig. 1. My specimen of Hypocephalus armatus. 
la. Under side of the head. 10. One of the maxille. 
le. The labrum. 
2. Copy of Desmarest’s figure of Hypocephalus armatus. 
3. Copy of Gistl’s figure of Mesoclastus paradoxus. 
