GENERAL ANATOMY OF THE SQUID. 



351 



3. The third division, or vas efferens (Fig. 182, c), is a 

 long, straight, thin-walled tube, which passes backwards 

 to open into the posterior end of the fourth division. 



4. This is the sper- 

 matophoric receptacle. 

 It is much larger and 

 longer than any of the 

 other regions, and it 

 may again be divided 

 into a distal portion 

 or pen is (Figs. 182, a, 

 177, , 178, c, 179, e), 

 with thick, muscular 

 walls, and an enlarged 

 proximal portion or 

 spermatophoric pouch 

 (Fig. 182, b), with 

 thin transparent walls, 

 inside which the long 

 white thread-like sper- 

 matophpres may usu- 

 ally be seen. 



FIG. 183. Female re- 

 productive organs of Loligo 

 vulguris. (From Brock, 

 Taf. 11, Fig. 20.) Drawn 

 by S. Garman. 



a. Mantle. 6. Gills. 

 c. Siphon. d. Ink bag. 

 e. Blind sac of stomach, 

 turned to one side. y. Gland 

 of oviduct, h. Terminal por- 

 tion of oviduct, od. Folded 

 transparent portion of ovi- 

 duct, o. Ovary. FIG. 183. 



