Smithsonian miscellaneous collections . nature, it increases both thestrength and rigidity of the tegulum, and aids in protecting thereceptaculum seminis. The role of the apophysis in the process oflocking the genital bulb during maximum insertion is considered later,as is the role of the mesal notch of the apophysis. Comstock (1910, p. 169) adopted the term conductor in prefer-ence to Menges (1866) term spermaphorum because the formerterm was already in general usage, and because the latter term, sug-gested by a misconception of function, was inappropriate. Petrunke-vitch (1925, pp. 569-570)
Smithsonian miscellaneous collections . nature, it increases both thestrength and rigidity of the tegulum, and aids in protecting thereceptaculum seminis. The role of the apophysis in the process oflocking the genital bulb during maximum insertion is considered later,as is the role of the mesal notch of the apophysis. Comstock (1910, p. 169) adopted the term conductor in prefer-ence to Menges (1866) term spermaphorum because the formerterm was already in general usage, and because the latter term, sug-gested by a misconception of function, was inappropriate. Petrunke-vitch (1925, pp. 569-570) figured and briefly described the (1941) utilized the conductor and the embolus extensively inhis study of the agelenopsids. The conductor of the agelenopsids isa heavily sclerotized segment (fig. 4, cd). It occupies a prominentposition ectal to the main portion of the genital bulb. This segment issubrectangular in outline, with the ectodistal margin produced into a NO. 4 GENITALIA IN SOME AGELENID SPIDERS—GERING 21. Figs. 11-21 II, Tibial apophysis, left, ectal aspect, Agelenopsis twcvia (Walckenaer). 12,Tibial apophysis, left, ectal aspect, Agelenopsis actuosa (Gertsch and Ivie). 13,Tibial apophysis, left, subectal aspect, Agelenopsis Oklahoma (Gertsch). 14,Genital bulb, left, frontal aspect, A. Oklahoma. 15, Embolic terminus, left, frontalaspect, A. Oklahoma. 16, Genital bulb, left, frontal aspect, Agelenopsis pennsyl-vanica (C. Koch). 17, Embolic terminus, left, frontal aspect, A. pcnnsylvamca. 18, Genital bulb, left, frontal aspect, Agelenopsis spatula Chamberlin and Ivie. 19, Embolic terminus, left, frontal aspect, A. spatula. 20, Genital bulb, left, sub-frontal aspect, Agelenopsis actuosa (Gertsch and Ivie). 21, Embolic terminus,left, frontal aspect, A. actuosa. 22 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 121 toothlike process. In cross section, the conductor is somewhatU-shaped, with the open portion visible in frontal aspect. The rangeof variabilit
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