ENCHYTR^ID^ 



103 



ampulla, the distal end of which is narrow, tubular, and curved, open- 

 ing into the intestine. Sperm-ducts are narrow, confined to one or two 

 somites. Penial bulb with two sets of glands, all confined to the 

 bulb. No chylus cells. Nephridia with large anteseptal in which 

 the ducts are meandering. Color white. 



Locality. — In garden soil in the City of Guatemala, Central 

 America. 



The occurrence of this genus in a tropical locality like Guatemala, 

 even at an altitude of about 5000 feet would indicate that the species is 

 introduced. So far as we know, all Enchytraeids are of arctic or sub- 

 arctic origin, none having been found endemic to the tropics. 



DETAILED DESCRIPTION. 



Spermaihecce (figs. 67, a and /^). — An interesting feature is the 

 large blood-vessel which is situated inside the spermatheca, lining the 

 inner cavity. It is found only on one side of the cavity (fig. 67, a). 

 Even the stalk 

 of the sperma- 

 theca is filled 

 with capilla- 

 ries between 

 the cells. The 

 connection be- 

 tweenthe sper- 

 matheca and 

 the intestine is 

 narrow and 



twisted (fig. 67, h). It is possible that the length of the distal end 

 is somewhat variable. 



Penial bulb. — In the penial bulb the coarsely granulated cells are 

 situated exteriorly, opening on the surface around the pore. The 

 narrower and more finely granulated cells open in the extension of the 

 sperm-duct. 



Somites. — The majority of the specimens measured 6 to 8 mm. 

 These specimens possessed deep intersegmental grooves even posterior 

 to the clitellum. Two specimens were longer, or about 10 mm. 

 These were posteriorly smooth and showed no distinct intersegmental 

 grooves posterior to the clitellum, except near the tail end. In these 

 latter specimens the spermathecjE were slightly different in form but not 

 sufiiciently so to warrant the making of a distinct variety. The figure 

 representing tAvo spermatheca crossing each other in situ is from these 

 larger specimens (fig. 68, a). 



Fig. 68. Henlea guatemalce. 



