1908] Female Reproductive Organs of Cimbex 91 



layers, respectively primary and secondary cuticula, are radically 

 different in chemical and physical properties." In the heart- 

 shaped dorsal part of the spermatheca numerous pore canals, 

 which stain deeply with gentian violet, penetrate the hyaline 

 lamellated secondary layer of chitin in a more or less wavy man- 

 ner (Figs. 4 and 7, c). They could, in some cases, be seen to 

 enter the deeply staining primary layer, but could not be traced 

 for any great distance here. In the funnel-shaped ventral portion 

 of the spermatheca the pore canals could not be found. 



A number of microscopic differences occur in the tw^o divisions 

 of the spermatheca. In the dorsal region of the heart-shaped 

 part, the primary layer of chitin is smooth and entirely free from 

 bristles (Fig. '], p). At some distance dorsal to the constriction, 

 which marks the boundary between the two divisions of the 

 spermatheca, there are a few sharply pointed bristles scattered 

 about irregularly (Fig. 4, h). Near this boundary the primary 

 layer of chitin assumes a folded appearance with the bristles 

 regularly arranged on one side of the fold and pointing ventrally 

 (Fig. 4, v). At the constriction, however, the bristles change in 

 direction and point dorsally and they are here arranged on the 

 opposite side of the fold (Fig. 4, a). The bristles retain this 

 position throughout the funnel-shaped ventral portion of the 

 spermatheca. 



In the dorsal heart-shaped region of the spermatheca the epi- 

 thelium consists of prismatic cells, where cell boundaries are dis- 

 cernable, while in the funnel-shaped portion the inner ends of the 

 cells vary somewhat in shape, owing to the folding of the chi- 

 tinous intima. The cytoplasm in the dorsal and throughout the 

 greater part of the ventral divisions of the spermatheca is granular 

 towards the chitinous intima, but towards the basal end, the 

 epithelial cells show a distinct longitudinal striation. Each cell 

 contains an ovoid nucleus with its long axis at right angles to the 

 chitinous intima (Fig. 7). 



Near the region where the spermatheca opens into the common 

 oviduct, the epithelial cells gradually become smaller and more 

 or less flattened. The long axis of the ovoid nuclei usually 

 assumes a direction parallel to the chitinous intima. The marked 

 longitudinal striation has disappeared, and the cytoplasm is gran- 

 ular throughout these cells. Both primary and secondary layers 

 of chitin are very much thinner, but the bristles are of the same 

 size and still point dorsally (Fig. 2). 



