698 



THE AMERICAN NATURALIST \}'oh. XL 



remarkable by reason of its small size, and the limited number of 

 segments composing the body. At first it seemed probable that 

 it was an immature form but evidence to the contrary was given 

 by budding in several specimens. 



Nais tortuosa n. sp 



Prostomunn blunt, ioiiii.|*<l r\,> j)i(-,(.nt -^li'-hflv (himl)l)oll- 

 shaped. Digestive truer not (litlrtviiriatr.l int., e^opi-mn- ii 

 stomach. Dorsal buudl.' lirouuiiiin- ,,ti ilth ^cnincnt ( (.iiipoM'.l <> 

 long capilliform (180 ,n) and 2 short (.■)() needle-like sette \'e 



