306 FRESH-WATEE RHIZOPODS OF NORTH AMERICA. 



Ehrenbergr, Christian Gottfried. 



A. Megastoma, Mb. 1856, 337, T.af. Fig. 3 ; Mg. Taf. xxxiv, viii, Fig. 1 ; Abh. 1871, 259. 



= Tbinema enchelys ? 

 A. Microstoma, Mg. Taf. xxxviii, xxi, Fig. 11 ; Abh. 1871, 260, Taf. lii. Fig. 13. 

 A. Nidus Pcndulus, Abh. 1841, 410, 441, Taf. lii, i, Fig. 48. =Trinema 3«nchelys. 

 A. Nigritarum, Mb. 1856, 132, Taf. Fig. 5 ; Abh. 1871, 260. 

 A. nutans, Abh. 1871, 264. = Tkinema enchelys. 



A. peristicta, Abh. 1871, 260, Taf. lii, ii. Fig. 11, 12. = Akcella discoides ? 

 A. Pileus, Abh. 1841, 410, 441, Taf. iii, i, Fig. 47. 

 A. Pyrum, Ahh.. 187], 260, Taf. iii, Fig. 15; Nordp. Taf. iii, Fig. 34. =DlFFl,UGlA 



CONSTRICTA. 



A. reticulata, Ahh. 1871, 260, Taf. iii, Fig. 5; Mg. Taf. xxxiv, i, B, Fig. 1. =-lSrEBELA? 



A. rostrata, Abh. 1871, 272, Taf. iii, ii. Fig. 2. = Teinbma enchelys. 



A. acabra, Abh. 1871,261. 



A. seriata, Abh. 1871,261, Taf. iii. Fig. 6. ^Tkinema bnchelys? 



A. squamata, Abh. 1871, 261. =Nebela collakis ? 



A. stellata, Abh. 1871, 261, Taf, iii, Fig. 10. = Aecblla dbntata. 



A. Textrix, Mb. 1872, 296 ; Nordp. Taf. iii. Fig'. 31. = Trinbma bnchelys. 



A. uncinata, Mb. 1845, 361; Abh. 1871, 261 ; Mg. Taf. xxxiv, viii, Fig. 2; Taf. xxxviii, 



A, xxi, Fig. 4. = Teinbma enchelys. 



A. VULGARIS, Abh. 1830, 40, 61, 69, 75, Taf. i. Fig. vi; 1831, 90; Inf. 133, Taf. ix, Fig. 



v; Mg. Taf. xxxviii, A, xxi, Fig. 10. 

 Cyphidium aureolum. Inf. 135, Talf. ix. Fig. ix. 



Difflugia acanthophora, Abh. 1841, 413, 444, Taf. iv. i, Fig. 36. = Euglypha axveolata. 

 D. acuminata, Abh. 1830, 75 ; 1831, 90 ; Inf. 131, Taf. ix. Fig. iu. 

 D. adunca, Abh. 248, Taf iii, i. Fig. 8, 9. = Cyphodbeia ampulla. 

 D. alal)amerms, Abh. 248, Taf. iii, Fig. 10. := Cyphodbeia ampulla. 

 D. alpicola, Abh. 1858, 453, Taf iii. Fig. vi. 

 D. alveolata, Abh. 1871, 264. = Euglypha alveolata. 

 D. Amphora, Abh. 1871, 248, Taf. iii. Fig. 17. = Euglypha ? 



D. Amputta, Mb. 1840, 199; Abh. 1871, 274, Taf. iii. Fig. 11. = Cyphodbeia ampulla. 

 D.annnlata, Abh. 1871, 249, Taf. iii. Fig. 19. = Nbbbla ? 

 D. antarciica, Abh. 1871, 143, 249, Taf. ii. Fig. 11. 

 D. apiculosa, Mb. 1872, 297 ; Nordp. 466, Taf iii. Fig. 17. 

 D. arctica, Mb. 1872, 298; Nordp. 466, Taf. iii, Fig. 28. 

 D. Arciiacon, Abh. 1871, 249, Taf. iii, i, Fig. 2. 

 D. areolata, Abh. 1841, 413, Taf i, iv, Fig- 8 c; Taf ii, i. Fig. 45; Taf iii, i. Fig. 49; 



Taf. iv, V, Fig. 2; 1847, Taf vi. Fig. 61; Mg. Taf xxxiii, iv, Fig. 2; Taf. xxxiv, i, 



B, Fig. 2, iii, B, Fig. 1; Taf xxxviii, xxi. A, Fig. 2; Taf xxxix, iv, Fig. 25 ; Nordp. 

 466, Taf iii. Fig. 23. = Euglypha alveolata. 



D. assulata, Abh. 1871, 143, 249, Taf ii. Fig. 4, 5. = Quadrula symmetrica. 



X). ? asterophora, Abh. 1871, 240, Taf iii, i. Fig. 18. 



D. azoriaa, Abh. 1871, 143, 249, Taf ii. Fig. 29. 



D. Baileyi, Abh. 1871, 250, T.af iii. Fig. 29. = Marine, Cadium maeinum, Bailey 



D. haltioa, Abh. 1871, 264. = Cyphodbeia ampulla. 



D. Battlogi, Abh. 1871, 143, 250, Taf iii. Fig. 17. 



D. Unodia, Abh. 1871, 143, 2C0, Taf ii. Fig. 22,23. =Nbbela collaris. 



D. Bructeri, Mb. 1848, 379; Abh. 1871, 274, Taf iii. Fig. 20. =Nebela? 



D. cnuoellata, Mb. 1848, 379; Abh. 1871, 143, Taf ii. Fig. 3. =Nebbla collaris t 



D. caponais, Abh. 1871, 143, 250, Taf ii. Fig. 33. = Quadrula symmetrica, var. 



D. carolincnaia, Abh. 1871, 250, Taf iii, Fig. 14. = Quadrula symmetrica. 



v. Carpio, Abh. 1871, 143, 251, Taf ii, Fig. 21 ; Taf iii, Fig. 21. =Nbbela collaris. 



D. foauoaaica, Abh. 1871, ^1, Taf iii, Fig. 28. 



Z). celluUfera, Mb. 1872, 298; Nordp. 4G6, Taf iii. Fig. 24. =Nebela collaris. 



D. cellulosa, Abh. 1847, 460, Taf vi, iii. Fig. 70; 1871, 251; Mg. Taf xxxix, xiv, Fig. 26. 



D. dliata, Mb. 1848, 379; Abh. 1871, 143, Taf ii, Fig. 26. = Euglypha cu-iata 



Z». collaris, Mb. 1848, 218; Abh. 1871, 143, Taf ii. Fig. 27; Taf iii, i. Fig. 21. =Nebela 



COLLARIS. 



D. CuourUtuU, Abh. 1871, 143, 251, Taf ii, Fig. 8, 



