NEW MAl.l.OI'JIAGA. 223 



PLATE XII. — Transverse sections of Mfuopou p^r»ifjnatHm. Fij*. I. 

 Section through head in region of anterior end of brain. Fig. 2, Section 

 through head in legion of posterior part of auteunary fossiti. Fig. 3, Sec- 

 tion through head, passing through the eyes. Fig. 4, Section through 

 posterior part of head. Fig. o, Section through prothorax just hack of 

 the legs. Fig. (J, Section of niesothorax through bases of the legs. Fig. 

 7, Section of meluthorax just in front of the legs; « asophagus, aw 

 antenna, hr brain, gg suba*suphageal ganglion, e eye, Ir trachea, h heart, 

 / base of luesothoracic leg,/ fat-body, <:r crop, »/, prothoracic ganglion, g, 

 mesothoracic ganglion, c nerve commissure in front of mesothoracic gan- 

 glion, vw thickened ventral wall of antennary fossa. 



PLATE XIII. — Internal male genitalia. Fig. 1, Transverse section of 

 testis of Menopon titan; mp outer tunica, ep epithelium. Fig. 2, Trans- 

 verse section of vas deferens of Menopon tiluii; mp membrana propria, fji 

 epithelium, in intima. Fig. '.i, Reproductive organs of male UoniodiA cer- 

 vinicornis; I testes, rd vas deferens, sv vesicula? seminales, ej ductus ejac- 

 nlatorius. Fig. 4, Transverse section of ductus ejaculatorius of Menopon 

 titan; mp membrana propria,*/) epithelium, in intima, m circular muscles. 

 Fig. 5, Transverse section of lower end of vesicula seminalis uf Mtnopon 

 titan; letters as in last. Fig. 6, Transverse section through middle of 

 vesicula seminalis of Menopon titan; letters as in tig. 4. Fig. 7, Repro- 

 ductive organs of male Colpocephalitm ftaveiicens (After Nitzsch); t testes, 

 rd vas deferens, »r seminal vesicle, eJ ductus ejaculatorius, r chitinous 

 rod attached to inner tube of genital cavity. Fig. 8, Same of Eurymetopun 

 taurus; letters as before. Fig. 9, Same of Physontomum diffusum; letters 

 as before. Fig. 10, Same of Menopon titan: letters as before, but also, tv 

 vas deferens, cd transverse duct connecting the two vasa defereutia, int 

 innermost iuvagiuated tube of genital cavitj', having rod (r) attached to 

 its lower end. 



PLATE XIV. — External male genitalia. Fig. 1, Chitinous genital parts 

 of Lipeurus jHliijinosiin major, dorsal aspect. Fig. 2, Same of (loniodes 

 cervinicornin, dorsal aspect. Fig. 3, Same of Phi/Hostomnm dijTunutn. Fig. 

 4, Same of Oiebelia mirabilis. Fig. 5, Same of EurymetopuH taurus, dorsal 

 aspect. Fig. 6, Stimeot Colj>ocephalum ohorni. Fig. 7, Same of Trinoton 

 luridum. Fig. S. Same of Docophorus lari. Fig. 9, Same of Oonioeotef 

 creber. Fig. 10, Same of Menopon mesoleucuvi. 



PLATE XV. — Fig. 1, Longitudinal section of two posterior somites of 

 male Eunjmetopus taurus. Fig. 2, Longitudinal section of six posterior 

 segments of male Menopon titan. Figs. S-Tt, Transverse sections of abdo- 

 men of male Menopon titan. Fig. 3, Through anterior end of segment 

 VIII. Fig. 4, Through segment VII. Fig. 5, Through segment V; ttn 

 transverse muscles; Im longitudinal muscles, em extrusor muscles, >n 

 membrane surrounding muscles, ije genital chamber, i intestine, n anus, 

 p penis, pi internal plaie, ;• internal rod. t^ outermost invaginated tube. 



