122 
Literatiir-ofver sigt. 
34. Cocconema parvum (Sm.?) Sweden, Gottland, Kylley. Coll, by 
P. T. Cleve. Exam, by Grunow. 
35. Cocconema parvum Sm. forma gracilis (? = C. hungaricum Grün 
var ) Norway, Brewig, on moist rocks. Coll, by P. T. Cleve. 
Other forms: Eunotia Arcus Ehrb., Grunowia sinuata Rabh., 
Achnanthidium flexellum Bréb. Exam by Grunow. 
36. Cocconema stomatophorum Grun. Sm. Atl. Sweden, Göteborg, 
Lindholmen. Coll, by O. Nordstedt. — Exam, by Grunow. 
37. Encyonema hebridicum (Greg.) Grun. Sweden, Luleå Lapp¬ 
mark, Muddes Ape; fossil. Coll, by F. W. Svenonius. Other 
forms ; Eunotia (denticulata Bréb. v.) glabrata Grun. Navicula 
serians Kütz. and var. minuta & angusta (nearly related to N. 
Zelleneis Grun.), Melosira nivalis W. Sm., Encyonema gracile 
(Ehrb.), Cymbella (obtusa var.?) naviculacea Grun., Fragilaria 
(virescens var.) undosa Sm., Eunotia pentaglyphis Ehrb. — Exam, 
by Grunow. 
38. Encyonema cœspitosum Kütz. Sweden, Upland, Bursjön. Coll, 
by V. B. Wittrock. — Other forms: Epithemia gibba Kütz., E. 
Sorex Kütz. — Exam, by Grunow. 
39. Gomphonema geminatum Ag. Sweden, Mälaren. Coll, by P. 
T. Cleve. 
40. Gomphonema robustum Grun. New York. Comm, by I. D Möller. 
41. Gomphonema balticum Cleve. Sweden, Gottland, Slite; brackish 
water. Coll, by P. T. Cleve. 
42. Gomphonema calcareum Cleve. Sweden, Gottland, Likershamn; 
on moist rocks. Coll, by P. T. Cleve. 
43. Epithemia gibba Kütz. var. elongata. Prussia, Potsdam, Batzlow. 
Comm, by Grunow. 
44. Epithemia Zebra Ehrb. Italy, S:ta Fiore; fossil. Other forms: 
Epithemia gibba Kütz., Synedra. (splendens var.) longissima Sm., 
S. capitala Ehrb., Surirella splendida Kütz., Cocconema Cistula 
Hempr., Cymbella gastroides Kütz , C. cuspidata Kütz., Navicula 
nobilis Ehrb., N. gentilis Donk., N. major Kütz., N. cardinalis 
Ehrb., N. gibba Ehrb., N. nodulosa Kütz., N. (Esox var.?) flo- 
rentina Grun., Stauroneis Phoenicenteron Ehrb. — Exam, by 
Grunow. 
45. Epithemia turgida (Ehrb.) Kütz. Sweden, Baltic. Roslagen, on 
Conferva ægagropila, dredged from 150 fath. depth Coll, by 
C. Nyström. — Rhabdonema minutum Kütz. (rare.). 
46. Epithemia gibberula Ehrb. var. lunaris, forma major. Hindoo- 
stan, Kayengmathaychoung. Comm, by Grunow. Other forms : 
