REFERENCE LETTERS, PLATES LIII TO LVIII. 



a.g. 



ant. 



ap. 



c.d. 



cb. 



eh, 



cl. 



cw. 



ex. 



d.w. 



e. 



e.d. 



ep. 



epm. 



eps. 



f.t. 



g.c. 



g.h. 



by. 



h.g. 



i.e. 



l.ep. 



l.p. 



Ib. 



m. 



m.g. 



mb. 



md. 



Antennal groove. 



Antenna. 



Antipygidial bristle. 



Common salivary duct. 



Club of antenna. 



Chitin of head capsule. 



Clasper. 



Claw. 



Coxa. 



Dorsal wall of pharynx. 



Eye. 



Ejaculatory duct. 



Epipharynx. 



Epimerum. 



Episternum. 



Fibrous tissue. 



Genal comb. 



Genal hook. 



Hypopharynx. 



Hind-gut. 



' Internal incrassation '. 



Labrum-epipharynx. 



Labial palp. 



Labrum. 



Manubrium. 



Mid-gut. 



Membrane. 



Mandible. 



The marks " and '" signify that 



of the thorax'respectively, 



mn. Mesonotum. 



mp.t. Malpighian tubes, 



mt. Metanotum. 



mx. Maxilla, 



mx.p. Maxillary palp, 



oc. Occiput, 



oes. Oesophagus, 



p. Penis, 



pi -3. Processes of the clasper. 



pg. Pygidium. 



ph. Pharynx, 



pn. Pronotum. 



pv. Proven tricul us. 



r.s. Receptaculum seminis. 



rt. Rectum. 

 s.2 s. 10. Sternites in order, 



s.c. Spine of the genal comb, 



s.h. Sense hair, 



sl.d. Salivary duct, 



sl.g. Salivary groove, 



sp. Spiracle, 



st. Sternum, 



t. Tarsus, 

 t.l. 1.9. Tergites in order, 



tb. Tibia, 



td. Tendon, 



tr. Trochanter. 



v.w. Ventral wall of the pharynx, 

 the parts belong to the second and third segments 



