CHAPTER IX 



REPRODUCTION. 



SPECIAL REFERENCES. 



BRANDT, A. Ueber die Eirohren der Blatta (Periplaneta) orientalis. Mem. Acad. 

 St. Petersb. Ser. 7, Vol. XXI. (1874). [Ovarian Tubes of Cockroach.] 



LACAZE-DUTHIERS. Rech. sur 1'armure genitale femelle des Insectes Orthopteres. 

 Ana. Sci. Xat., Zool., 3 e Ser., Tom. XVII. (1852). [External reproductive organs 

 of female Orthoptera.] 



BERLESE. Ricerde sugli organi genitali degli Ortotteri. Atti della R. Acad. dei 

 Lincei. Ser. 3, Vol. XL (1882). [Genital Organs of European Orthoptera.] 



KADTI. Beitr. zur Vorgiinge beim. Eierlegen der Blatta Orientalis. Vorlaufige 

 Mittheilung. Zool. Anz., 1879, p. 632. [Formation of egg-capsules of Cockroach.] 



BREHM. Comparative structure of the reproductive organs in Blatta germanica 

 and Periplaneta orientalis. Mem. Soc. Ent. St. Petersb., Tom. VIII. (1880). In 

 Russian. [Male organs only.] 



RAJEWSKY. TJeber die Geschlechtsorgane von Blatta orientalis, &c. Nachr. d. 

 kais. Gesellsch. d. Moskauer Universitiit. , Bd. XVI. (1875). [Testes of Cockroach. 

 The original paper is in Russian ; an abstract is given in Hofmann and Schwalbe's 

 Jahresbericht, 1875, p. 425.] 



BUTSCHLI. Ban u. Entwickelung d. Satnenfaden bei Insekten u. Crustaceen. 

 Zeits. f. wiss. Zool., Bd. XXL, pp. 402-114; 520-534. PI. xl. xli. (1871). 

 [Spermatozoa and spermatogenesis in the Cockroach.] 



LA VALETTE ST. GEORGE. Spermatologische Bedtriige, II. Blatta germanica. 

 Arch. f. mikr. Anat., Brl. XXVII. (1886). [Spermatogenesis in B. germanica.] 



MORAVITZ. Quaedam ad anat. Blattre germanicpe pertinentia. Dissertatio inaugu- 

 ralis. Dorpat. (1853). [An excellent early account of the anatomy of B. r/ermanica, 

 including a description of the male and female organs. The figures are not 

 trustworthy.] 



Female Reproductive Organs. 



The ovaries of the two sides of the body are .separated, as in 

 most Insects, and consist on each side of eight tubes, four 

 dorsal and four ventral, which open into the inner side of a 

 common oviduct. The two oviducts unite behind, and form a 

 very short uterus. Tracheae and fat-cells tie the ovarian tubes 



