124 EISEN 



ABBREVIATIONS USED IN TEXT FIGURES. 



The following abbreviations are used in connection with the text 

 illustrations : 



ac. gl., accessory glands opening exterior to the penial bulb near the spermi- 

 ducal pore. 



atr., atrium of the sperm-duct. 



at. gl., atrial glands or prostate opening into the atrium of the sperm-duct. 



b. -w., body-wall or integument. 



d. int., dorsal interval, the interval between the dorsal fascicles of setae. 



gl. c., glandular cells opening into the spermatheca. 



gl. ep., glandular epithelium. 



int., intestine, or in some instances the place where the spermatheca opens 

 into the intestine. 



/. m., longitudinal muscular layer of the body-wall. 



lat. int., lateral interval ; the interval between the ventral and lateral fascicles 

 of setae. 



or. ac. gl., orifice of the accessory glands opening outside of the penial bulb 

 near the spermiducal pore. 



p. bib., penial bulb, the glandular and muscular cushion which surrounds the 

 penial pore, and which projects inward in the coelomic cavity. 



/. gl., penial glands, glands which are situated inside the penial bulb and 

 which generally open on the surface of the body around the penial pore. 



pr., prostate or accessory glands opening into atrium of the sperm-duct. 



pore, the penial pore, the exterior pore of the sperm-duct. Also pore of 

 spermatheca. 



spd., sperm-duct, the duct between the sperm-funnel and the atrium. 



spd. p., spermiducal pore ; the exterior pore of the sperm-duct. 



sp.f., sperm-funnel. 



spth., spermatheca. 



sps., sperm-sacs capping the testes in Lumbricillus. 



/., testes. 



/. c., tactile cells. 



tr. m., transverse muscular layer. 



v. int., ventral interval, the interval between the ventral fascicles of sets. 



