NIPHARGUS KOCHI ANUS. 
325 
few individuals had been observed many years ago. A 
larva is also found in the well, which is stated by the 
proprietor to feed on the Niphargi. 
It is named in compliment to the distinguished na- 
turalist, who first described and figured two of these 
peculiar and interesting little animals. 
We are inclined to think this species identical with 
the specimens captured at Bonn, described and figured 
by Caspary and Hosius, referred to in the synonyms 
under N, aquilex , but want of specimens from that 
locality prevent our determining this point. 
The vignette represents a well similar to those in 
which these animals are frequently found. 
