1908] Reproductive Organs of Male Cimhex 199 



From an external view one cannot say with certainty just 

 where the ducts of the glandulae mucosae end and the ejacula- 

 tory ducts begin. The latter are two short cylindrical tubes 

 which continue side by side and only join at their terminal 

 extremity to open to the oustide. Zander (39) describes the 

 ductus ejaculatorius of Cimbex variabilis as a "enges Rohr, das 

 den Penis durchzieht." 



HISTOLOGICAL DESCRIPTION. 



Testis: A study of sections cut through the testis shows that 

 the club-shaped testicular follicles are surrounded by a thin mem- 

 brane ("capsule enveloppante " of Bordas) which contains small 

 ovoid nuclei. Numerous tracheae penetrate this membrane 

 and branch and rebranch in the space between the testicular fol- 

 licles. A delicate network of loose fibrous connective tissue is 

 present in the space between the testicular follicles. 



The testicular follicles open into an enlarged portion of the 

 distal end of the vas deferens, the so-called collecting reservoir, 

 which is excentrically placed within the testis. Each testicular 

 follicle does not always open separately into this collecting reser- 

 voir, but oftentimes two or more join with one another before 

 opening into it. 



A longitudinal section parallel to the surface of the testis 

 shows that the epithelial la^^er of the collecting reservoir extends 

 for a short distance into each testicular follicle. The epithelium 

 consists of a layer of flattened cells, with cell boundaries indis- 

 cernible; each cell contains an ovoid nucleus. The epithelial cells 

 rest upon a basement membrane. External to this membrane is 

 a branching muscle layer, which continues for some distance on 

 each testicular follicle. In our work upon the female reproduc- 

 tive organs of Cimbex (34) we found branching anastomosing 

 muslces in the egg-tubes extending to the apex of the ovariole, 

 Ijeing present in even the terminal filament. 



Vas deferens: The vas deferens is made up of the following 

 layers passing from without, inward: — i, a very much folded, 

 peritoneal membrane; 2, a longitudinal branching muscle layer; 

 3, a muscle layer composed of transversely striated circular and 

 oblique fibres; 4, a basement membrane and 5, an epithelial layer 

 consisting of elongated cells with cell boundaries not discernible. 



Seminal vesicle: With the exception of that region of the 

 seminal vesicle, which is near the opening into the glandula muco- 



