GENUS EUGLYPHA— EUGLYPHA CILIATA. 215 



Shell compressed ovoid, with the oral pole usually more or less taper- 

 ing and truncated by the transversely oval mouth ; transverse section oval, 

 with rounded or more or less sub-acute poles Fundus and lateral borders 

 mostly fringed with spines or bristles, variable in number and degree of 

 robustness, sometimes absent, and sometimes numerous, and extending to a 

 variable extent over the shell and merging into the variety E. strigosa. 

 Plates composing the shell mostly elongated hexahedral, closely fitting at 

 the margins, and arranged in longitudinal rows in alternating series. Mouth 

 bordered with from six to fourteen or more (?) blunt, angular, crenulated 

 teeth composed of the lowest plates of the shell, which are usuallv decid- 

 edly thicker than elsewhere. 



Size. — Ranging from 0.056 mm. in length by 0.024 mm. in the greater 

 and 0.016 mm. in the less breadth to 0.1 mm. in length by 0.06 mm. in 

 the greater and 0.032 mm. in the less breadth. 



Locality. — Common in wet sphagnum of the sphagnous swamps of 

 New Jersey and Pennsylvania. Collected in the sphagnous and cedar 

 swamps of Atco, Hammonton, Absecom, Malaga, and Budd's Lake, New 

 Jersey, and in the Pocono Mountains of Pennsylvania. 



Euglypha cilinta is an abundant species in the wet sphagnum of 

 sphagnous swamps, to the entire exclusion of E. alveolata, than which it is 

 much more common in its own habitation. In general appearance it resem- 

 bles E. alveolata, but is compressed, and is usually readily distinguished by 

 its fringe of bristle-like spines extending around the fundus and along the 

 greater part of the lateral borders. 



The shell of Euglyplia ciliata, like that of the preceding species, is vari- 

 able in size, proportions, and form, and also in the number, strength, and 

 extent of distribution of its bristles. It is compressed ovoid, or oblong 

 ovoid, with the oral pole more or less tapering, and truncated by the 

 mouth. Sometimes it is nearly round and somewhat prolonged at the oral 

 pole. See figures of pi. XXXVI. 



In transverse section, the shell is oval, with evenly rounded or more or 

 less rounded angular poles, and the less breadth is commonly little more 

 than half the greater breadth. See figs. 2, 10, 13, 15. 



The spines or bristles commonly occupy the lateral or narrower bor- 

 ders of the shell, extending along the fundus and reaching below the middle 



