2-20 FKESH- WATER EHIZOPODS OF KOETH AMEEICA. 



Size. — Ranging from 0.108 mm. in length by 032 mm. in breadth to 

 0.14 mm. in length by 044 mm. in breadth, independently of the mucro, 

 which is from 0.02 mm. to 0.044 mm. long. 



Locality. — Wet sphagnum of the cedar swamps of New Jersey. 



Eugirpha mucronata, like the preceding species, is a comparatively 

 small and narrow form. See figs. 1 1-14, pi. XXXVII. The shell is com- 

 monly more tapering toward the mouth than in E. cristata, and it has a 

 sharp conical fundus surmounted by a long, stout, pointed spine, sometimes 

 straight, but usually more or less bent to one side, or it is somewhat curved. 

 Frequently, two similar and smaller spines substitute the single stronger 

 one, as seen in figs. 13, 14. Occasionally, the spine is quite short, and in 

 two specimens observed, none existed. 



The composition of the shell and of the sarcode is the same as in E. 

 cristata. 



In several specimens observed, the sarcode was in an encysted con- 

 dition and contained in an egg-like case within the parent shell, the mouth 

 of which was closed by an epiphragm, as seen in figs 13, 14. 



Euglyplia mucronata is not unfrequent in the wet sphagnum of sphag- 

 nous bogs. 



EUGLYPHA BRACHIATA. 



Euglyplia bracliiata. Leidy : Pr. Ac. Nat. Sc. Phila. 1878, 172. 



Shell like that of Euglyplia cristata, but without the tuft of spines to 

 the fundus, and with from two to four or six long spines, springing from 

 the neck of the shell and diverging or curving upward and outward. 



Size. — From 0.104 mm. long by 0.028 mm. broad to 0.128 mm. long 

 by .04 mm. broad. 



Locality. — Wet sphagnum of cedar swamps, and in the black ooze of 

 Batsto River, New Jersey. 



Euglypha brachsata is a near relative of the preceding two species. 

 Its shell has the usual form and structure of that of E cristata, but the tuft 

 of comparatively short spines of the fundus in this is substituted usually 

 by two or four, or less frequently by six spines diverging from the sides of 



