66 bulletin of the laboratories 



Family Anuraeadae. 



XV. Genus Anuraea, Gosse, nee Ehrenberg. 



Sp- 27. Anuraea tecta, Gosse. 



Anuraea tecta, * * Hudson and Gosse, The Rotifera or 



Wheel-animalcules, Vol. II, p. 123; pi. XXIX, fig. 10. 



During the latter part of summer a single individual of this species 

 was encountered in one of our shallow, weedy ponds. 



Sp. 28. Anuraea cochlearis , Gosse. 



[Plate I; Fig. 1 .] 



Anuraea cochlearis. * Hudson and Gosse, the Rotifera 



or Wheel-animalcules; Vol. II, p. 124; pi. XXIX, fig. 7. 



Myriads of this species have been encountered in one of our clear 

 ponds. Here, as in England, they are much preyed upon by 

 Asplanchnas. 



PART II. CRUSTACEA. 



The arrangement adopted in this portion of this paper is the same 

 as that followed by Professor C. L. Herrick, in his "Final Report 

 Report upon the Crustacea of Minnesota." 



ORDER CLADOCERA. 



Family SIDIDAE. ' 



I. Genus Sida, Straus. 



Sp. i. Sida crystallina, Mueller. 



Sida crystallina, * C. L. Herrick, Final Report on Min- 



nesota Crustacea, p. 20. 



This beautiful species appears to be quite rare in this locality. I 

 have seen it but once. On the 17th of April, 1891, several were 

 found among the Sagittaria in one of our canal basins. 



Family DAPHNIDAE. 



II. Genus Moina, Baird. 



Sp. 2. Moina paracloxa, Weismann. 



Mdina paradoxa, * C. L. Herrick, Final Report on Min- 



nesota Crustacea, p. 34; pi. A, figs: 1, 3, 6, 7, 9. 



During the latter part of summer and the early part of fall, this 

 species was very abundant in several of the stagnant pools that 



