ann- '• — 



oes.- 



Kf- 



mzp. 



K/U. 



9P- 



Fig. 3. Interior of the head of .1/. (lome.-itica. In this figure the left side of the 

 head capsule and of the proboscis have been removed and the compound ej'e 

 of the same side, leaving the optic ganglion (periopticon). All the tracheal 

 structures have been omitted. 



a.c. Anterior cornu of fulcrum, a.f.h. Accessory flexor muscles of haustellum. 

 ai?. Apodeme of labrum. an.n. Antennal nei-ve. C.G. Cephalic ganglion. 

 con.l. Dilator muscles of labium-hypopharynx. d.jjh. Dilator muscles of 

 pharynx. (Ls. Discal sclerite. Ex.h. Extensor muscle of haustellum. 

 -F. Fulcrum. /. Furca. f.c. Fat cells. /./(. Flexor muscle of haustellum. 

 f.l. Flexor muscle of labnim-epipharynx. f/.j). Gustatory papillae of oral lobes. 

 k. Hyoid sclerite of pharynx. Ih.n. Labial nerve, lb. si. Labial salivary gland. 

 l.hp. Labium-hypopharynx. l.ep. Labrum-epipharynx. m.rp. Maxillary palp. 

 oe.s. Oesophagus. oc.«. Ocellar nerve, ijh.n. Pharyngeal nerve, p.c. posterior 

 cornu of fulcrum. P.O. Periopticon. jys. Pseudotrachea. Pt. Ptilinum. 

 r.d.s. Ketractor muscles of discal sclerites. r.f. Eetractor muscle of fulcrum. 

 r.fu. Retractor muscle of furca. r.h. Retractor muscle of haustellum. 



r.r. Retractor muscle of rostrum, .s.o. Suboesopbageal ganglion, sul.d. Com- 

 mon duct of the lingual salivary glands, s.v. Valve of common .salivary duct. 

 s.m. Muscle controlling valve of salivary duct. th. Theca. 



