OF DENISON UNIVERSITY. 6 1 



discrete clumps of cilia and two sensory processes. The crop is 

 large and distensible, the forceps are smooth and toothless. The 

 oesophagus is long and muscular. The stomach is composed of ver)' 

 large cells and is held in place by bands of connective tissue. There 

 are accessory glands between the stomach and crop. The ovary is 

 pear-shaped (not horse-shoe-shaped, as in A. jM)'77/ieIeo). a.nd can be 

 seen to be made up of an elongated ribband of cells folded upon itself. 

 The pulsating vessel is exceeding large and powerful, while the lateral 

 vessels are convoluted canals ; accessory to the latter, there are nearly 

 straight tubes bearing about twenty beaker-cells. The foot is two- 

 jointed and contains small glands. The muscular spstem is highly 

 developed and consists of strong bands passing backward from the 

 head and frequently branching before they are inserted upon the very 

 pliable external wall. Two pedate cells lie upon the viscera and may 

 represent the visceral nervous system. The nervous system was oth- 

 erwise found to consist of ganglia upon the oral aspect, one of which 

 bears a single icd eye, and which send nerve-fibers to all parts of the 

 body. The animal feeds upon species of minute Crustacea, especially 

 of the genus Chydorus. The greatest length is .9 mm , width, .66 

 mm., foot, .15 mm. This species was figured in the writer's Final 

 Report on the Crustacea of Minnesota, where also may be found the 

 figure of 



ASPLANCHNA Sp ? 



This species, which seems to resemble A. Brightwelii of Gosse, is 

 purse-shaped, being constricted about the head. The jaws are bi- 

 dentate at the end and ribbed. The foot is entirely absent, but its 

 position is indicated by the orifice of small glands. The stomach of 

 the only individual of this species seen contained a number of the 

 lorica of what may be Amircea longispina, Kellicott. 



Explanation of Plates. 

 Plate II. 



Fig. 1. Dinacharis pocillum, Ehr.? 



Fig. 2. Asplanchna niagiiificus, sp. 11. 



Fig. 3. Fuc/iianis ampuliformis, SY*. \\. 



Fig. 4. Salpina affinis, sp. n, 



Plate III. 



Fig. I. Pterodina patina, Ehr. 



