^ 350. THE INSECTA. 455 



tidae^^ and Libellulidae^^ have a short, double, seminal receptacle, which, 

 however, appears to be wholly wanting with the Ephemeridae. There is a 

 round Bursa copulatrix only with the Libellulidae/'*'*' The glandular 

 appendages of the vagina are also not found with all the Orthoptera. 

 They are wanting with the Forficulidae, Phasmidae, Perlidae, Ephemeri- 

 dae, Libellulidae and Aerididae, but with Decticus and Locusta, there is 

 a sebaceous organ consisting of a simple, pretty long tube,''"" which, with 

 the Achetidae, is more or less ramose, and with the Blattidae and Mantidae is 

 composedof a considerable number of partly simple, partly ramose follicles.'^'' 



With the Neuroptera, the ovaries consist always of multilocular tubes. 

 With the Hemerobidae, and Myrmeleonidae, there are ten inserted on the 

 external side of the two large oviducts, and with the Phryganidae, their 

 number is quite large, but their insertion on the oviducts is the same.*''"' 

 The ten with Panorpa, and the much larger number with Sialis, are dis- 

 posed verticillatc at the extremity of the oviducts. With Myrmeleon and 

 Panorpa, the seminal receptacle is a long, pedunculated sac ; and has, with 

 Hemerobius, a single, and with Rapkidia, a double Glandula appendicula- 

 rism With the Phryganidae, this receptacle is still more complicated, 

 for, beside a long, tortuous accessory gland, which is inserted on the neck, 

 or at the base of the Capsula seminis, there is, at the lower extremity of 

 the Ductus seminalis, another and flexuous glandular tube, and a short- 

 pedunculated reservoir which corresponds perhaps to a copulatory pouch.'*' 

 With Sialis, beside two lateral deverticula serving, probably, as copulatory 

 pouches, the vagina has numerous vesicular appendages filled with a dark 

 liquid, but the nature of these is still not understood.'*'' With Myrmeleon, 

 Hemerobius, and Panorpa, the vagina receives two simple, more or less 

 flexuous, glandular tubes,'*-* which are probably sebaceous organs, and 

 with the Phryganidae, consist of six digitiform follicles. '■'^' 



With the Coleoptera, the ovaries consist of trilocular, rarely multilocular 

 tubes,'**' which are inserted on thecalyciform upper extremity of the oviducts, 

 in groups of five to ten or even of fifteen to thirty and forty. '*^' Beside 



•■53 Rlatta orientalis has two short and fjexuous 38 For the female organs of the Neuroptera, see 



seminal receptacles ; but Blatta germanica has L. Dufour, Becherch. sur les Orthopt. &c. PI. 



two large and two small ones ; see Siebold, in XII. XIII. 



Mulle.r's Arch. 1837, p. 403. 3!) L. Dufour, loc. cit. PI. XII. fig. 174, d. 



'H The seminal receptacles of Libellula, Aeschna ^Panorpa). 



and Diastatomma consist of two small caeca, *• L. Dufour, Ibid. PI. XIII. fig. 211, 212. 



which, with Calopteryx, open into the vagina H L. Dufour, Ibid. PI. XII. fig. 188, b. ; and 



through a common duct ; while, with vigrton, there Suckow, iu Hcusinger's Zeitsch. II. Taf. XVI. 



is only a single long receptacle ; see Rathki, l)e fig. 16, d. 



Libellular. partibus genital. Tab. I. fig. 11-13, Tab. 4.' L. Dufour, Ibid. PI. XII. fig. 174, 194, c. c. 



II. fig. 12-14, and Tab. III. fig. 9-11, c, and L. « L. Dufour, Ibid. PI. XIII. fig. 211. By 



Dufour, loc. cit. PI. XI. fig. 165, d. d. (Libellula, means of these glands the females of Phry^anea 



Aeschna and Agriori). See also my memoir on envelop their eggs with a gelatinous substance 



the generation of the Libellulidae, iu Germar^s which swells in water and often sticks to stones or 



Zeitsch. I. p. 433. aquatic plants, presenting the appearance of an 



35 See Ratkke, loc. cit. Tab. I. fig. 11-13, Tab. aniiular spawn. 



II. fig. 12, 13, and Tab. III. fig. 9-11, b. 44 The ovarian tubes are multilocular with the 



36 See Roesel, loc. cit. Taf. IX. fig. 3, i., and Carabidae, Hydrocanthari, Cyphonidae, TelephoriT 

 Siebold, Nov. Act. Nat. Cur. loc. cit. p. 255, Tab. dae, and Cui'culionidae ; in general they are 

 XIV. fig. 1, e. bilocular with the Staphylinidae ; see Stein, 



37 See C. Dufour, Recherch. &c. PI. HI. fig. Vergl. Anat. &c. p. 2J. 



31, d. (Oecantkus), PI. IV. fig. 43 (^Mantis). It 45 The ovaries are multitubular with the Cara- 



is not surprising that this wax-apparatus is so bidae, Hydrocantliari, ]Iydrophilidae, Elateridae, 



highly developed with the Blattidae and Mantidae, Cln-ysomelidae,and Coxinellidae; while with ^;u'o«, 



for, as is known, the females of these insects sur- Lixus,a.n<l Hylesinus, there are only two on each 



ruund their eggs with very spacious, multilucular side ; see L. Dufour, Ann. d Sc. Nat. VI. 1825, PI. 



capsules, which they carry about with them, or XVII.-XX.; Suckow, in Heusinirer's Zeitsch. II. 



fasten to foreign bodies ; see Gaede, Beitr. &c. Taf. XIII., and Stein, loc. cit. Taf. lil.-VIII. 

 Taf. I. fig. 13, 14 (Blatta orientalis), and Roesel, 

 loc. cit. Th. IV. Taf. XII. (Mantis). 



