580 



Transactions of the Society. 



Scephanotrocha rubra Bryce (2). 



I have never seen this species feed. The generic characters 

 cannot be seen unless when it is feeding — nevertheless, it can be 

 distinguished from all known species of Habrotrocha by its specific 

 characters, the red stomach, short blunt spurs, and the teeth. 



Only found in the South Island, as usual among Sphagnum. 

 Known in Britain, North America, and Australia. 



Bdelloid egg sp. (?). Plate XVII. fig. 9. 



This very large egg was found in the Mount Cook district. It is 

 drawn to the same scale as the adult animals on the same plate. 

 It is knobbed like the egg of Adineta barbata. The well-developed 

 jaw proves it to be a Bdelloid, but as neither corona nor foot was 

 seen, the family to which it belongs cannot be ascertained. The 

 2 teeth in each jaw are very thick, like those of some forms of 

 C. auadricomifera and B. trisecatus. 



Bhizota. 



Many Bhizota were seen, but they were unfamiliar, and I had 

 no books, so I could not identify them. 



(Ecistes velatus Gosse was recognized from its resemblance to 

 Pseudoidstes rotifer Stenroos, but it has differently placed eyes. 



Ploima. 



Polyarthra platyptera and Triarthra longiseta. These plankton 

 species were obtained from the water taps in the city of Auckland. 



EXPLANATION OF PLATE XVII. 



Fig. 6a. — Rotifer longirostris (Janson) variety. 



66. Ditto. Jaw. 



6c. Ditto. Spurs and toes. 



la. — Rotifer montanus sp. n. 



76. Ditto. Head (rostrum and mouth). 



7c. Ditto. Side view of head. 



Id. Ditto. Jaw. 



8a. — Rotifer curtijyes sp. n. 



86. Ditto. Side view of head. 



8c. Ditto. Head. 



9. — Bdelloid egg. 

 10a. — Habrotrocha sp. 

 106. Ditto. Side view of foot. 

 10c. Ditto. Jaw. 



Ha. — Mctopidia latusinus Hilgendorf. Extreme form. 

 116. Ditto. Form with narrower sinus. 



