THE MOUTH-PARTS OF THE THYSANOPTERA. 
BY H. GARMAN. 
EXPLANATION OF KIGDKE. 
Front (ventral) view of the head of Limothrips cerealium Haliday 
(to some extent diagrammatic). 1, compound eyes; 2, radiating part 
of endocranium at base of riglit eye; 3, bar whicli connects the same 
of left side with edge of epicranium; 4, mandible of left side, repre- 
sented more enlarged at right of figure; 5, rudimentary mandible? of 
riglit side; 6, clypeus ; 7, labrum ; 8, galea? of maxilla; 9, laciuia? of 
maxilla; 10, maxillary palpus. 
For some time the writer has been ftimiliar with a pecu- 
liarity in the mouth-parts of members of this group of in- 
sects which is without a parallel among other insects known 
to him, and is so extraordinary that some hesitation is 
(24) 
