THE GENUS PISSObES. 



13 



submentum in Dendrodonus. Its apex is truncate or rounded, and 

 supports the labium, the mentum of which is about as long as the 



Palpif, 

 Jtlenlum- 



Gular suture 



Occipital area -(1_ _ 



Fig. 1 .-Pissodes strobi: Head, ventral aspect, and mouth parts. A , Ventral aspect of apical region of beak ; 

 B, ventral aspect of head; C, interno-lateral aspect of maxilla; D, externo-lateral aspect of maxilla; a, 

 apical tooth; 6, subapical tooth; c, lateral arm of hypostoma; d, pleurostoma; e, mandibular scrobe; /, 

 hypostomal area; g, lacinial bristles; h, antennal groove; /, joints; j, fossa of cardo; k, hypostomal punc- 

 ture. (Author's illustration.) 



submentum and a httle broader. The labial palpifer is not defined, 

 but is represented by the anterior thirtl of the mentum. The labial 



