*§> 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, Phasuiidae, Perlidae, Ephemeri- 

 dae, Libellulidae and Aerididae, but with Decticus and Loaista, 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 verticillate at the extremity of the oviducts. With Myrmeleon and 

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

 Hejnerobius, a single, and with Raphidia, a double Glandvla appendkula- 

 risS^'^^ 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 seminu, 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 Patiorpa, 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 



33 Blatta orientalis has two short and flexuous 38 I'or the female organs of the Neuroptera, see 



Beminal receptacles; \mt Blatta §ermatiica has L. Dufour, Recherch. sur les Orthopt. &c. PI. 



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



MuUer's Arch. 1S37, p. 403. 39 L. Dufour, loc. cit. PI. XII. fig. 174, d. 



34 The seminal receptacles of Libellula, Aesckna {Panorpa)'. 



and Diastatomma consist of two small caeca, 40 /^. Dufour^ Ibid. PI. Xin. fig. 211, 212. 



which, with Calopteryx, open into the vagina 41 L. Dufour, Ibid. PI. XII. fig. 188, b. ; and 



through a common duct ; while, with ^g-rfon, there Suckow,m. Ueiisinger's Zeitsch. II. Taf. XVI. 



is only a single long receptacle ; see Rathke, De fig. 16, d. 



Libellular. partibus genital. Tab. I. fig. 11-13, Tab. iJ. L. Dufour, PMd. PI. XII. fig. 174, 194, c. c. 



II. fig. 12-14, and Tab. III. fig. 9-11, c, and L. 4.3 L. Dufour, Ibid. PI. XIII. fig. 211. By 



Dufour, loc. cit. PI. XI. fig. 1(35, d. d. {Libellula, means of these glands the females of' Phry^anea 



Aesckna and Agrion). See also my memoir on envelop their eggs with a gelatinous substance 



the generation o? the Libelluhdae, in G€rmar''s which swells in water and often sticks to stones or 



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



3o See Rathke, loc. cit. Tab. I. fig. 11-13, Tab. annular 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, Telephori- 



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



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



3' See L. Dufour, Recherch. &c. PI. III. fig. Vergl. Anat. kc. p. 2J. 



31, d. (Oecanthus), PI. IV. fig. 43 (Mantis). It 4.3 The ovaries are multitubular with the Cara- 



is not surprismg that this wax-apparatus is so bidae, Hydrocanthari, Ilydrophilidae, Elateridae, 



highly developed with the Blattidae and Mantidae, Chrysomelidae.and Coocinellidae; \Thniv/ithApion, 



for, as is known, the females of these insects sur- Lixus, and Hylesinus, there are only two on each 



round their eggs with very spacious, multilocular side ; see L. Dufour, Ann. d Sc. Nat. VI. 1S25, PI. 



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



fasten to foreign bodies; see Gaede, Beitr. &c. Taf. XIII., and 67em, loc. cit. Taf. IlI.-VIII. 

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

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



