IV TABLE OF THE PLATES. 



INSECTA. 

 riate 10. Fig. 5.— Ducts of the genitalia of Donacia aquatica, Suckow, without 

 appendages. 

 Fig. G. — Ducts of the genitalia of Paryganea oleracea. a. — Vasa 



deferentia. h. — Vesifa seminalis. 

 Fig. 7. — Ducts of the genitalia of Dyticls marginalis, marked the 



siime. 

 Fig. 8. — Ducts of the genitalia of Apis mell., Brandt, a, a. — Vesica 



seminalis. b, b. — Clavate gum-vessels. 

 Fig. 9. — Ducts of the genitalia of Melolonthavuigaris, Suckow. a, a. 

 — Ducts of the vesica seminalis. b, 6.— Gum-vessels, with 

 their distension. 

 Fig. 10. — Ducts of the genitalia of Hydrophilus picels, Suckow. a, a. 

 — Vasa deferentia. a*, a*. — Vesica seminalis. a, a. — 

 Ends of the auxiliary testes, h*, b*. — The first furcate 

 gum-vessel, b, b. — The second simple ones. 

 Fig. 11. — Ducts of the genitalia of Lamia ^Difcis, Fab. a, a. — Vesica 

 seminalis. b — Furcate gum-vessel, with unequal branches. 

 Fig. 12. — Organs of V^anessa Urtice, Swamm., male. a. — United 

 testes. a», a». — Vasa deferentia, into which the gum- 

 vessels, b, b, open. 

 Fig. 13. — Gum-vessel of Calosoma sycophanta, Suckow. a. — Vasa 

 deferentia of one side, which opens into the gum-vessel 

 b, b, of the side ; that of the other side and the ductus eja- 

 culatorious is cut off. 

 Fig. 14. — Ducts of the genitalia of Tipula crocata, Suckow. a, a. — 

 Vasa deferentia. b. — Gum-vessels. 



Plate 11. Fig. 1. — Apex of the abdomen of a Cicada. A. — Last dorsal segment. 

 B. — Basal joint of the slieath of the ovipositor. C. — Terminal 

 joint. D. — Last ventral segment. 



Fig. 2. — Ovipositor with the valves from beneath. B, B. — Basal joints 

 of the valves. C, C. — Terminal joints. D. — The ovipositor. 

 [ Figs. 3, 4, 7, 8.— Male organs of a Carabis. 



Fig. 3. — Prepuce from beneath, a, a. — The horny ridges of the pre- 

 puce, b. — The hurny plate which lies in the lower portion of 

 the prepuce, c. — Process in which the penis lies. d. — Last 

 dorsal segment. 

 Fig. 4. — Prepuce from above, as taken from the ventral cavity, a. — The 

 horny ridges which distend the bag of the prepuce, b. — The 

 process of the prepuce, iu which the penis lies. c. — Apex of 

 this process, into which the vasa deferentia extends, d. — Last 

 dorsal segment. 



Fig. 5. — Apex of the sheath of the ovipositor of a Cicada from above, 

 toothed on the margin, furrowed in the centre, cmarginate at 

 the apex to receive the points of the setae, which form the true 

 apex of the ovip sitor. I 



Fig. 5. a. — Section, a, a. — The valves, b, b. — The sheath, c. — The 

 setae. 



Fig. 6. — Section of the mere ovipositor, a, a. — The sheath, b, — The 

 setsB. 



Fig. 7. — The penis of a Carabus from beneath, a. — Aperture of the 

 penis, whence the sperm flows. 



Fig. 8. — Penis from above, with a, lateral moveable process, b, in which 

 the muscles are inserted. 



Figs. 9, 10. — Ovipositor of Cimbex variabilis. 



Fig. 9. — The valves opened from beneath. A, A. — The last dorsal seg- 

 ment, a, a. — External valves, b, b. — Internal valves, or 

 saws, c — Central short process. 



Fig. 10. — An internal valve, b. — Furrow, a. — Lov?er surface of the 

 valve, b. — Superior surface. 



