220 MR. F. E. BEDDAEi) OK Ais" [Mar. 5, 



specimens, the penes are attached to the ventral surface of both 

 the xviiith and the xixth segments. In the present worm they 

 are as clearly attached to the ventral surface of segments xviii., 

 xix., and xx. This can be ascertained by the presence of lateral 

 couples of setas corresponding to the ventral area, which is devoid 

 of setae. There are three pairs on each side, the ventral setae 

 being missing or probably transferred to the penis, which is simply 

 a pulled-out region of the ventral body-wall. 



Text-fig. 60. 



-s 



Penis-like appendage of Alma sp. inc. 

 S, sucker. 



On the ventral surface of the penis are two suckers, which are 

 quite conspicuous. The first is near to the base of the organ, the 

 second at the opposite extremity at the bottom of the deep pit in 

 which the penis ends. There were no suckers in intermediate 

 positions such as are possessed by A. millsoni. In the arrange- 

 ment of these suckers the present species seems to come near to 



