PLATE XXXV. 



Figs. 1-18.— EUGLYPHA ALVEOLATA. Transverse diameters of the shell uniform. 



Fig. 1. Lateral view of a living specimen. Sarcode exhibiting a nucleus at the fundus, and a 

 contractile vesicle on each side; pseudopods protruded. Shell with six spines to the fundus. 500 

 diameters. Absecom pond, New Jersey. 



Fig. 2. Lateral view of an unusually large empty shell. 500 diameters. Sphagnous swamp of 

 Tobyhanna, Pokono Mountain, Pennsylvania. Shell with four spines. 



Fig. 3. Lateral view of au empty shell. 700 diameters. Absecom pond, New Jersey. Shell with 

 four spines, and double row of serrated plates to the mouth. 



Fig. 4. Lateral view of shell, with six short spines to the fundus. 500 diameters. China Lake, 

 Uinta Mountains, Wyoming. 



Fig. 5. Lateral view of a living specimen. 500 diameters. Ditches below Philadelphia. Shell 

 with two spines. Sarcode with large nucleus in the fundus; four large vacuoles below ; and a con- 

 tractile vesicle on each side. 



Fig. 6. Shell with numerous spines all around the fundus. Absecom pond, New Jersey. 



Fig. 7. Shell with six divergent spines to the fundus. Sphagnum of Absecom, N. J. 



Fig. 8. Lateral view of a living specimen. Darby pond, Delaware County, Pennsylvania. 



Fig. 9. Lateral view of an individual, with the sarcode encysted, and the mouth of the shell 

 closed with au operculum. Same locality as the preceding. 



Fig. 10. Individual in which the sarcode is encysted, and contained within two distinct envelopes. 

 Found with the preceding. 



Fig. 11. Small living individual ; the sarcode exhibiting the nucleus, a pair of contractile vesicles, 

 and pseudopods extended. The shell spineless. 1,000 diameters. With Rotifers, &c, among moss in 

 the crevices of the brick pavements of the city of Philadelphia, August, 1878. 



Fig. 12. Another specimen, from a similar position in the yard attached to my house. 666 

 diameters. 



Fig. 13. A pair in conjugation ; the sarcode mass contracted to the fundus of each shell. 1,000 

 diameters. In company with the preceding. 



Fig. 14. An individual iu which the sarcode is encysted and enclosed in a double envelope ; and 

 the shell closed with an operculum. 500 diameters. Fort Bridger, Wyoming, July, 1877. 



Figs. 15,16, 17. Three successive views of the same pair in conjugation. 250 diameters. Abse- 

 com pond, New Jersey, May, 1877. 



Fig. 18. Highly magnified view of the plates at the mouth of the shell. 



Figs. 19, 20.— EUGLYPHA CILIATA, variety E. strigosa. 



Fig. 19. Empty shell ; of uniform transverse diameter. 1,000 diameters. Sphagnum of Mount 

 Vernon, Alabama. 



Fig. 20. Empty shell. 700 diameters. Sphagnum of Absecom, N. J. Breadth of the shell, 

 nearly double in one direction what it is iu the opposite. 



