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Mesostoma ehrenbergii was collected in large numbers from the 

 Elkhorn Eiver in Stanton County, in May, 1903. This material agreed 

 closely with the description of this species given by Woodworth (1897). 



A Ehabdocoel, which is probably a variety of Macrostoma hystrix, 

 has been collected near Lincoln in small numbers on several occasions. 

 The posterior end of this form is much less conspicuously broadened 

 than in M. hystrix as figured by v. Graff (1882). 



One specimen of Prorhynchus applanatus was obtained from the 

 aquarium of the University greenhouse November 1, 1901. Although but 

 a single specimen was found it agreed so closely with the description of 

 this species given by Kennel (1888) that there could be no question as 

 to its identity. 



Among the unidentified Turbellaria collected in the state, there 

 are two planarians which can not be assigned to any species so far de- 

 scribed. The following is a preliminary report upon these two forms : 



Planaria velata n. sp. Fig. 1. 



This species has been collected only near Crete, by Dr. J. H. Po- 

 wers. The material was obtained from small springs and ponds con- 

 taining algae in which the planaria were hidden. 



Length of largest specimens collected in November, 15 mm. In 

 May they average 5 or 6 mm long. Anterior end blunt with small 

 rounded median projection. Two rounded cephalic appendages. Slightly 

 narrower just back of cephalic appendages than through pharyngeal 

 region. Posterior end bluntly pointed. In preserved material, cephalic 

 appendages disappear and anterior and posterior ends assume much the 

 same shape. 



Color of dorsal side, to unaided eye, varies from very light gray 

 to almost black. Under lens, a colorless groundwork with black pigment 

 spots. Much lighter in front of eyes and on cephalic appendages. Usually 

 a lighter median dorsal area over pharynx. Somewhat lighter near late- 

 ral margins. 



Ventral side somewhat lighter gray than dorsal and with nerve 

 tracts usually showing as two light lines. Regularly two eyes, often with 

 from one to six accessory eyes which are usually imperfect in shape and 

 irregularly placed, though more often just back of the normal eyes than 

 in any other position. 



Digestive tract of usual triclad type. Anastomosis of side branches 

 either in anterior or posterior regions very rare. No cross-anastomosis 

 of main posterior trunks. 



At present it is impossible to say anything concerning the sexual 



