456 



THE INSECTA. 



§350. 



these fasciculate, there are, also, here and there, botryoidal ovaries, in which 

 there are numerous imbricated tubes inserted on a large calyx of each of 

 the oviducts.^*'' When these tubes are few in number, they are but rarely 

 disposed in simple or double regular series.'^"' With most species, the 

 Receptaculum seininis is cuneiform and often arcuate ; its internal walls 

 are brown, solid and horny, and it communicates with the vagina or copu- 

 latory pouch by means of a long, flexuous, spiral Ductus seminalis. With 

 many species, this receptacle is invested with a muscular apparatus, com- 

 posed of striated fibres, and which undoubtedly is a compressor. Usually, 

 there is, attached to the base of the receptacle, a simple, rarely bifurcate 

 or multiramose, Glandula appendicular is, which is sometimes provided wiih 

 a long, flexuous excretory duct.'***' Sometimes the entire Receplaculvm 

 seminis is composed of only a simple, rarely bifurcate, somewhat long cae- 

 cum.*''"' Most of the Hydrocanthari, and some Carabidae, with which the 

 Ductus seminalis is inserted on the copulatory pouch, have the peculiarity 

 that there arises from the Receptaculum seviinis a special Fecundatory 

 canal which opens into the upper portion of the vagina.*^"' A Biirsa 

 copulatrix exists, generally, in this order. With only a few species, it 

 consists of a simple dilatation of the vagina,'^" but, usually, it is a rather 

 long, muscular caecum, separated from the upper wall of the vagina, and 

 sometimes even flexuous when its length is considerable.'^-' Very ofteu, 

 the vagina is quite long, curved S-shaped, and passes with the rectum into 

 a cloaca-like canal. It has a complicated special muscular apparatus.*^' 

 The glandular appendages of the vagina are wanting with the Coleoptera, 

 but, with the Hydrophilidae, there are two multiramose appendages on the 

 oviducts, which are probably sebaceous organs.*^*' The same function may, 

 perhaps, be attributed to the glandular walls of the upper extremity of the 

 oviducts of the Staphylinidae and Histeridae.'^^' 



46 With the Melo'idae ; see Brandt and Ratze- 

 burg, Mediz. Zool. II. Taf. XVII. fig. 2. 



i~ The ovaries are in single ro-vsv/ithMacrony- 

 chus, Oxytelus, Si/pha, and Byrrhus ; but thty 

 are iu two rows witli Stenelmis, Lycus, Oedeme- 

 ra, and Hydrobius ; see L. Diifour, Ann. d. So. 

 Nat. III. 1835, PI. VII. fig. 25, 27 ; and Stein, 

 loc. cit. Taf. III. fig. 3, 16, Taf. IV. fig. 3, 4, and 

 Taf. VI. fig. 8. There is a very remarl^able dispo- 

 sition, according to Stein (loc. cit. p. 30, Taf. I. 

 fig. 4), with Dianous caeru/escens, Myrmedonia 

 caniculata, Homalota canaliculata, and a spe- 

 cies of Trichopteryx, which, alone among all 

 known Insecta, have only a single ovary and a 

 single oviduct, the first being composed of ten to 

 twelve .tubes disposed in two rows. 



4ti For the different forms of the Receptaculum 

 seminis of the Coleoptera, see L. Dufour, Ann. d. 

 Sc. Nat. VI. 1825, and III. 1835, &c: ; Siebo/d, in 

 Mutter's Arch. 1837, p. 404, Taf. XX. fig. 1, and 

 especially Stein, loc. cit. p. 96, with the corre- 

 sponding figures. With the Elateridae, the acces- 

 sory gland is distinguished by a very complicated 

 structure and numerous ramifications ; see L. Du- 

 four, Ann. d. Sc. Nat. VI. 1825, PI. XVII. fig. 

 8-10, and Stein, loc. cit. p. 129, Taf. V. The sem- 

 inal receptacle is wholly wanting with Xantho Li- 

 nus punctatus, Lathridius porcatus, Notoxus 

 inonoceros, and Lagria hirta ; see Stein, loc. 

 cit. p. 93. 



4S' With the Carabidae, and some Staphylinidae. 

 The seminal receptacle is double with Stenus and 

 Paederus ; see Stein, loc. cit. p. 97, Taf. I. III. 

 fig. 6. 



50 With the Hydrocanthari and some Cara- 



bidae ; see Stein, loc. cit. p. 99, Taf. I. fig. 12, 

 Taf. II. 



51 Silpha, Dromius, Calosoma, and other Cara- 

 bidae. 



5- See Straus, Consid. &c. PI. VI. fig. 2, o. n. 

 (Melolontha) ; Brandt and RaPzeburg, Mediz. 

 Zool. II. Taf. XVII. fig. 2, n. m. (Me/oe) ; Suck- 

 oiv, in Heusinger's Zeitsoh. II. Taf. XIII. ; Sie- 

 bo/d, in MuUer's Arch. 1837, p. 405, but especially 

 Stein, loc. cit. p. 69, and the correspondmg 

 figures. 



5S There is a long, fiexuous, muscular vagina 

 with the Cerambycidae, Curculionidae, Elateridae, 

 Buprestidae, and most of the Heteromera ; also, 

 with the Histeridae, Dermestidae, Parnidae, &c.; 

 see Stem's exact descriptions, loc. cit. p. 71, Taf. 

 VI.-VIII. 



54 See Stein, loc. cit. p. 33, Taf. IV. fig. 3 

 (Hydrobius fnscipes). With Hydrobius piceus, 

 and caraboides, there are even two kinds of anal- 

 ogous appendages. One consists of eight bifurcate 

 follicles, the other of simple tubes inserted on the 

 calyx of the oviducts ; see L. Dufour, Ann. d. 

 Sc. Nat. VI. 1825, p. 445, PI. XVIII. fig. 5, and 

 Sue/cow, 'mHeusinger\i Zeitsch. II. Taf. XIII. 

 fig. 34. The bifurcated appendages were over- 

 looked by this last naturalist. It is well known 

 that the females of the Hydrophilidae enclose their 

 eggs by groups in a cocoon {Lijonet, M^m. du 

 Mus. &c. XVIII. p. 454, PI. XXiV.) which those 

 of Spercheus carry about attached to their poste- 

 rior legs. 



55 Stein, loc. cit, p. 35. 



