156 PROCEEDINGS OF THE ACADEMY OP 



sarc bright green from the abundance of chloro])h3l grannies. 

 Lenglli of test | mm.; neck one-fourth to one-third the length of 

 the test. Abundant in Absecom Pond, New Jersey. 



DiFFLUGiA OLLA. Test Composed usually of angular C[uartz par- 

 ticles, and occasionally of diatorae shells; form pot-like, with a 

 s[>lieroidal body, a contracted neck, a large circular mouth, a 

 reflected \i\>, and ol)luse, divergent spines projecting from the fun- 

 dus. p]ntosarc colorless. Length of test i mm. Abundantly 

 found with the preceding. The form is intermediate to Difflugia 

 corona and D. lageniformis of Wallich. 



Catharia. Ditflugians with a membranous, structureless test 

 without adherent particles of foreign matter. 



Difflugia (Catharia) papilio. Test pale yellow, transparent, 

 compressed pyriform, width less than half the breadth, border 

 acute; mouth transversel}' oval. Entosarc with many chlorophyl 

 globules, and attached bj' many bands to the inner surface of the 

 test. I'seudopods digitate. Length of test 0.112 mm., breadth 

 0.072 mm., width 0.032 mm. The living animal, from its varied 

 colors, is very handsome. Abundant in the sphagnum of Absecom, 

 of Longacoming, and of Lake Hattacawanna, ^^ew Jersey. 



Difflugia (Catharia) elegans. Test pale brown, compressed 

 bottle-shaped, width about one-half the breadth, border obtuse, 

 surface with shallow conical depressions ; mouth transversel}- oval. 

 Entosai'c colorless, or yellowish from the food balls. Length -j-'^ 

 mm.; breadth -^^ ; width ^\ mm. Ver}- abundant among the 

 sphagnum of Absecom, of Longacoming, and of Lake Hattaca- 

 wanna, New Jerse}'. 



Nebela. DiflUigians with an areolated test. 



Difflugia (Nebela) ansata. Test compressed pj-riform, width 

 about two-thirds the breadth, laterally obtuse and furnished with 

 a pair of handle-like processes projecting at the base of the neck, 

 and extending nearly parallel with and about one-third the length 

 of the bod}', colorless, transparent ; areolae appearing circular or 

 hexagonal; mouth transversely oval. Entosarc colorless, or yel- 

 lowish from the food balls. Length 0.22 mm., breadth 0.1 mm., 

 width 0.72 mm.; length of handles 0.04 mm. A rare form among 

 the sphagnum of Altsecom, having only found it twice. Remark- 

 able for the large hollow handle-like processes of the test. 



Difflugia (Nebela) equi-calceus. Test compressed pyriform, 

 the width about one-half the breadth, colorless, transparent ; cir- 

 cularly or hexagonally areolated, laterally acute and with the bod\'' 

 carinated. Carina deep and thick, and seen in the broad view 

 of the test as a horse-shoe like production with the extremities 

 free and projecting into the interior of the test towards the mouth. 

 Entosarc colorless, or yellowish from the contained food-balls. 

 Length ^ mm., breadth 0.14 mm., width 0.072 mm. Also rare, 

 and found in the same locality with the preceding, with which it 

 is equally- remarkable, from the existence of the singular horse- 



