PLATE LIII. 



Fig. 1. Oribata Edwardsii. Nymph. (Page 575.) 



2. Nymph referred to at p. 579; the adult 



whereof is not distinguishable from Oribata 



CUSPID ATA. 



3. Dam.eus olavipes. Larva. (Page 426.) 



4. Immature reproductive organs of the fully- 



grown nymph of Nothrus tlieleprodus. X about 

 150. {ov.) ovary ; {ckI.) oviducts ; [v.) vagina ; 

 ((IP-) genital plates ; {m. m.) bands of muscle. 

 6. Labial and mouth organs (excluding the mandi- 

 bles) of Ce'pheus latus seen from above. 

 X about 130. {d. cl.) maxillse; {d' . 6^'.) hinder 

 edge of same ; (e. e.) palpi ; (/.) labium ; {g.) 

 lingua, in paired halves, as it is seen in 

 preparations; this organ is dotted to distin- 

 guish it from other parts ; it is not really 

 dotted ; {ep.) the epipharynx ; (is.) thin chiti- 

 nous partition forming the inner skeleton of 

 the mouth, and supporting the epipharynx, 

 which is beneath it ; (/o.) foramen in is. ; 

 (hr.) brush bordering the upper edge of each 

 maxilla ; {oe.) oesophagus. 



6. The same seen from the side. This figure is 



diagrammatic. Same lettering as Fig. 5 (the 

 labium is seen in section ; the maxillse are 

 cut away). 



7. Lingua of same. 



8. Epipharynx of same. 



9. Lingua and section of labium of Orihata lapU 



daria. X about 200. 



10. Diagram of the arrangement of the anal plates 



and ovary of female Notaspis lucorum. {ap.) 

 anal plates ; {ov.) ovary ; {od.) oviducts ; 

 {st.) chitinous piece within the body above 

 the anal plates ; {sd.) sperm-duct (supposed) ; 

 {vp.) ventral plate. 



11. Brain (supra-oesophageal ganglion) and smaller 



lateral ganglia of Orihata glohula. 



