180 Transactions. 



Art. XVI. — Two New Species of Leech in New Zealand. 



• By W. B. Benham, D.Sc, University of Otago. 



[Read before the Ctago Institute, l^iJt November, 1S06.] 



Plates VIII and VIIIa. 



Up to the present time two species of leech have been described 



from this region— the first by Dendy and Olliver in 1900, and 



three years later I added a second species. Since that date I 



have been trying to obtain leeches — which undoubtedly occur 



in our streams in various parts of the, Island — but with only 



limited success. In the present communication I give an account 



of the anatomy, internal and external, of two new species, and 



add a short description of the internal anatomy of Hirudo anti- 



podum. The four leeches now known to occur in New Zealand 



are here systematically arranged. 



Order RHYNCHOBDELLIDA. 

 Fam. GLOSSOSIPHONID^. 

 MiCROBDELLA, Moore, 1900. 

 M. novcB-zealandice, Dendy and Olliver. 



Placobdella, Blanchard, 1893. 

 P. maorica, n. sp. 



