^ 350. THE INSECTA. 453 



of these animals. The two ovaries are unilocular pouches of unequal size, 

 inserted laterally, by means of a short oviduct, upon the vagina. The upper 

 extremity of this vagina contains sperm, after copulation, and may, therefore, 

 be regarded as a Receptaculum scminis ; while the lawer portion is wide- 

 ly dilated, and may, therefore, be considered as an uterus. The upper or nar- 

 rower portion of the vagina receives two small, simple, or somewhat ramose 

 glandular tubes [Glandulae sebaceae). ^^'^ Below these glands are situated 

 the two excretory ducts of a double glandular apparatus, very voluminous 

 and multiramose, whose product serves, without doubt, to nourish the 

 larvae which are provisionally developed in the uterus.'^*** 



With the Lepidoptera, each ovary is composed of four very long, spiral, 

 jnultilocular tubes. The Receptaculum seminis^^'^'' is pyriform, and often 

 has a long, spiral Ductus seminalisS-^^ At its base opens a simple or bifur- 

 cated accessory gland, and underneath it there is always a large, double, 

 sebaceous gland, consisting of two rather long, flexuous, simple caeca. 

 These last open into the vagina, by means of a short common excretory 

 duct, and each, at their point of union, is usually dilated into a vesic-uli- 

 forra reservoir.'-^* Some Lepidoptera have, moreover, two smaller ramose 

 glands, situated near the orifice of the vagina, which secrete, perhaps, an odor- 

 ous substance that excites the copulatory act.^'^-' 'The copulatory pouch, 

 "finally, is very remarkable in all the si^ecies of this order. It consists of a 

 .arge, pyriform reservoir, sometimes constricted in its middle, and hav- 

 ing for the reception of the penis, a canal which opens externally by a 

 special orifice situated below the vulva. In its course this canal sends 

 ofi' a small, flexuous, lateral duct, whic-h passes into the vagina opposite the 

 mouth of the Receptaculum semi?iis, and thus forms a communicatioa 

 between this last and the copulatory pouoh.'^"' 



With the Hymenoptera, the ovaries*-^' vary very much as to the number 

 of their component tubes, of which there are sometimes four to six, some- 

 times eight to ten, and with some species they range from twenty to a hun- 

 dred-. ^^' These tubes are always multilocular, and never very long. The 



1' These tubes are simple with Melophagus, and Taf. VI. K. (indistinct). Moreover, Malpighi (Da 



ramose with Hippobonca. Bomhyce, 16(5«, p. 81, Tab. XII. fig. 1, J. K. M.) 



18 See my researches iu Muller^s Arch. 1837, p. had already perceived, with the silk-worm, all tha 

 42Ö, and those of L. Dufour, Ann. d. Sc. Nat. VI. appendages of the vagina, and specially the copu- 

 1825, p. 308, PI. XIII., and III. 1S15, p. 76, PI. III. latory pouch with its canal of lateral communica- 

 This last-mentioned naturalist has very well figured tion. With Euprepia Hebe this canal has a pyri- 

 the female organs of Hippoboaca and Melophagus ; form deverticulum.* 



only he is deceived relative to the glandular append- 24 For the female genital, organs of the Hymen- 

 ages of the vagina, in regarding the upper pan' as optera, see L. JJufour, Recherch. sur les Orthopt. 

 a Receptaculum seminis, but which never contain &c. p. 406. 

 spermatic particles. 25 Each ovary is composed of three or four ovige- 



19 For the appendages of the female organs of the rous tubes with Xij/ocopa, Bombus, Anthophora, 

 Lepidoptera, see Siebold, in MuUer^s Arch. 1837, Chrysis ; of five to six with Nomada, Sapy.ga, 

 p. 417. ChaUis, f^espa ; of eight to ten with Pimpla^ Pa- 



20 The seminal receptacle has been figured in its nisciis ; of ten to twelve with the Tenthredinidae ; 

 various stages of development by Herold (Ent- of twenty to twenty-five with iV/yrwu'ca, Xy^Aryr/rta 

 wickelungsgesch. d. Schmettert. Taf. IV. fig. 1, u. y. and Banchus ; and of more than one hundred with 

 p. and Taf. XXV.) as a unicornous secreting organ. Apis. "With Chelonus the ovaries present a re- 

 See also Suckow, Auat. u. physiol. Untersuch, markable exception ; they consist each of two long 

 Taf. VI. g. g. flexuous tubes, which are very widely dilated at 



21 See Herold., loc. cit. Taf. III. fig. 1, t. z. their lower extremity. L. Dufour (loc. cit. p. 

 and the following plates ; also Suckow, loc. cit. 541, PI. X. fig. 143) regards these swellings as a 

 Taf. VI. 1. 1. kind of uterus iu which are developed the larvae of 



22 Melitaea, Argynnis, Zygaena, &c. these Ichueumonidae ; but this assertion cannot be 



23 See Herold, loc. cit. Taf. III. fig. 1, x. f. g. admitted without further research, 

 and the plates following ; also Suckow, loc. cit. 



* [ § 350, note 23.] See also for the internal and Kölliker's Zeitsch. I. 1849, p. 1S2. Thi» 

 female genital organs, and especially their develop- memoir contains many new details. --Ed. 

 «lent, of the Lepidoptera, Meyer, loc; cit. Siebold 



