Fig. No. 1 shows the Men turn with emarginate tooth, Liyula and Paraglossia 

 of Pterosiiehns lucull'indus, Say. 



Fig. No. 2. The toothed Men turn, narrow Liyula and broad Paraylossa of 

 Bradycellus ritpestriSj Say. 



Fig. 3. Anisodactylus harrisii, Lee., Men turn not toothed, apical dilatation 

 of Liyula, and basal joints of Labial palpus. 



PARTS OF CUT. 



Ventral surface of Rarpulus caliyinosus. 



A Mandible. K Prosternum. S Mesosternum. 



B Maxillary palpus. L Episternum of protho- T Metasternura. 



C Outer lobe of maxilla. rax. U Episternum of meso- 



D Inner lube of maxilla. M Coxae. thorax. 



E Labial palpus. N Trochanter. V Episternum of meta- 



F Paradossae. O Femora. thorax. 



G Lijnila. 

 H Mentum. 

 I Antenna. 



P Tibise. 

 Q Tarsi. 

 R Ungues. 



W Ventral segments. 

 X Epimeron of metatho- 

 Y Epipleura. [rax. 



EXPLANATION OP TERMS. 



Base — That point of any organ nearest the centre of the insect. 

 Apex — That point of any organ farthest from the centre of the insect. 

 Dorsal — Upper surface. 

 Ventral — Under surface* 

 Emary inate — Sharp indentation. 



