44 



There is a prolongation of each oviduct which extends 

 cephalad of the ovary ; this, we infer is a collcterial gland. 

 The colleterial glands are organs which secrete the cement 

 for gluing together the eggs ; the more usual 'form of them 

 is that of separate glands, like the accessory glands of the 

 male, which open into the vagina, as the accessory glands 

 open into the ejaculatory duct. 



Lying dorsad of the vagina, there is a small elongate body, 

 from which there extends a much convoluted tube ; these 

 are the spermatheca and its duct. 



On each side of the vagina, near the caudal end of the 

 body there is a rounded pouch, which in fresh specimens is 

 of a reddish color. From the cephalic end of each pouch a 

 muscle passes cephalad along the dorsal wall of the vagina, 

 and between the two oviducts, and is attached to the ventral 

 wall of the body. These pouches open below the ventral 

 valves of the ovipositor, one on each side of the opening of 

 the vagina, but a little farther dorsad than that opening. 

 The function of these organs has not been determined ; 

 they are described here on account of their intimate rela- 

 tions with the reproductive organs. They are doubtless 

 eversible glands, as in fresh specimens they can be everted 

 by pressure ; and the muscles are doubtless for withdrawing 

 them after eversion. 



If living specimens are available, kill a female, by putting 

 it in a cyanide bottle, and then by pressure of the abdomen 

 evert these glands. Note that they open separately between 

 the last sternum of the abdomen and the ventral valves of 

 the ovipositor. 



Take a fresh specimen, or a preserved one, if fresh speci- 

 mens are not to be had, and spread apart the last sternum 

 of the abdomen and the ovipositor, and observe the elliptical 

 opening between the ventral valves of the ovipositor. This 

 opening is surrounded by narrow bands of chitin, and is 



