172 Explanation of Plates V and VI 



semincalis ; k. and k'. the two elongate blind appendices opening into vesicula seminalis just 

 behind the base of penis ; of the left appendix, marked k, only the anterior part is shown. 



Fig. 2 p. Ovipositor, from above ; x 69. 



Fig. 2 q. Forceps of ovipositor, from below; x 131; only the basal part of the distal setae was 

 drawn. 



PLATE VI. 



In Jiijs. 1 — 13, representing female sexual organs in Palpatores and Laniatores, the folloiving lettering 



is used. 



a. sheath of ovipositor ; h. ovipositor ; dg. ducts from glands accessory to I'eceptaculum 

 seminis ; e. distal end of ovipositor : f. forceps of ovipositor ; I. oviduct ; o. operculum genitale ; 

 p>. wart-like prominence, being a tactile organ ; rs. receptaculum seminis ; rs'. additional receptacula ; 

 rsc. contents of receptacula seminis ; rsd. duct from receptaculum seminis ; w. interior wall of 

 ovipositor ; lad. muscular dilatator of the sheath ; me. front muscle to sheath ; mo. muscle 

 to operculum genitale ; mr. musculi retractores ovipositoris ; ms. muscular stratum of the sheath ; 

 mt. transverse muscular layer beneath the skin of ovipositor. 



Fig. 1. Sheath of ovipositor in Acantholophus tridens 0. Koch, from below; x 22; ovipositor, which 

 is discernible through the sheath, is indicated with dotted lines. 



Fig. 2. Left receptaculum seminis and the basal part of the ducts from the accessory glands of 

 GagreUa miniix Thor., from above; x 184. 



Fig. 3. Ovipositor without its sheath of Iscliijro'psalls luteipes E. S., fi-om above; x 22. 



Fig. 4. Receptaculum seminis of Ischyrupsalis luteipes E. S., from the side ; x 80. 



Fig. 5. Ovipositor without its sheath of Nemastoma luguhre O. F. Miiller, from below; x 41. 



Fig. 6. Receptaculum seminis of Nemastoma luguhre 0. F. Miiller, from the side; x 213; bundles 

 of spermatozoa are seen through the wall. 



Fig. 7. Set;e from the distal part of corpus ovipositoris in I'rogulas rostratus Latr. ; x 133. 



Fig. 8. Sheath of ovipositor and operculum genitale of Discoci/rtits testudiueus Holmb., from above ; 

 X 32 ; ovipositor, discerniVile through the skin of the sheath, is indicated with dotted lines. 



Fig. 9. Ovipositor, without its sheath, of MaracaTidus (Assamia) retioulatus E. S. ; x 24. 



Fig. 10. Terminal part of ovipositor of Acumontia echinata Poc, from above; x 44. 



Fig. 11. Ovipositor of Pachyloides uncinaius W. S., from above; x 78; the outer skin of ovipositor 

 removed excepting on the distal end : also the muscular layer around the proximal half of 

 ovipositor and the essentially longitudinal muscles between the receptacula completely removed. 



Fig. 12. Proximal part of ovipositor — with the distal portion of the oviduct — of Tricetiougx Valdiviensis 

 AV. S., from above ; x 47 ; the outer skin of the ovipositor removed ; the contents of the 

 receptacula are siiining through the transverse muscular layer as darker bodies, while the thick 

 whitish walls of the receptacula are confluent with the surrounding parts on the figure. 



Fig. 13. Two double receptacula with their ducts from tlie dorsal side of ovipositor of Acumontia 

 echinata Poc, from above; x 73. 



