PLATE LXXI 



Figure 1. The female reproductive organs of Pediculus vesti- 

 menti showing the five ovarian tubes, uniting on each 

 side to form an oviduct, which is enveloped in the acces- 

 sory gland, a.gl. ov.d., the common oviduct. X 33. 



Figure 2. The proboscis of Pediculus vestimenti, very highly 

 magnified, as it appears in transverse sections through 

 the head, mx., the maxillae, sl.d., the salivary duct. 

 The softer tissue ventral to the maxillae is perhaps 

 the hypopharynx. lb., the labium. 



Figure 3. The chitinous framework of the sucking apparatus of 

 Pediculus vestimenti, as seen in a cleared preparation, 

 t., the prestomal teeth, b.c., the buccal cavity (the 

 pharynx of Enderlein). ft., the fulturae, or lateral 

 thickenings of the buccal cavity, m.t., the membrane- 

 ous portion between the buccal cavity and the pharynx, 

 ph., the pharynx (the larynx of Enderlein). oes., 

 the oesophagus. 



Figure 4. A cell of the fat body, from the side of the oesophagus. 

 Compare with figure 2 on Plate LXX. X 550. 



Figure 5. A transverse section through the hind-gut of Pediculus, 

 at the region of the chitinous plates, ch.p. l.mu., 

 c.mu., longitudinal and circular muscle fibres, x 300. 



Figure 6. A portion of the edge of the maxilla of Pediculus 

 vestimenti. 



Figure 7. The male generative organs of Pediculus vestimenti. 

 ts., testis. v.d., vas deferens. r.sem., seminal vesicle, 

 a.g., accessory gland, e.d., ejaculatory duct, x 40. 



