* 
_ dents. | 
BULLETIN 
TORREY BOTANICAL CLUB. 
Vol. XIV.) New York, April, 1887. (No. 4. 
A Descriptive List of Staten Island Diatoms.* 
By E. A. SCHULTZE. 
Plate LXVI. 
NAVICULA AMPHIRHYNCHUS, Ehr. 
Navicula amphirhynchus, Ehr. Amer. 1843, p. 129, t. IIl., i., fig. 10; Kiitz., 
Bacill., p. 95, t. IV., fig. 13, t. XXL, fig. 11, and t. XXVIII, fig. 47; Rabenh., 
Siissw. Diat., p. 4o, t. VL, fig. 50; Sm., Syn., Vol. I., p. 51, pl. XVI., fig. 142; 
Ralfs in Prit. Infus., p. gor, pl. XIL., fig. 6; Donkin, p. 34, pl. 5, fig. 9; Van Heurck, 
Syn. Diat. Belg., pl. XIII., fig. 5.. 
X. producta, Sm., Syn., Vol. i., p. 51, pl. XVIL., fig. 144; Ralfs in Prit. Infus., 
p- 902, pl. VIL, fig. 66. 
N. affinis, var., Rabenh., E. Diat., p. 196, (var. a genuina). 
Valve elliptical, with produced capitate extremities; stria 
fine, distinct, granular, transverse in the middle, and toward the 
extremities oblique, reaching to the median line; slightly short- 
ened opposite the central nodule, and interrupted near the margin 
by one or two longitudinal lines. 
Hab.—Fresh water, not frequent. In ponds, Clifton, New 
Dorp, Huguenot. Plate LXVI., fig. 1. Fossil in the San Fiore, 
Italy, deposit. 
NAVICULA APICULATA, De Bréb. 
Navicula apiculata, De Bréb., Diat. of Cherb., p. 16, fig. 5; Ralfs in Prit. Infus., 
p- 903; Donkin., p. 56., pl. VIII., figs. 6a, 6b. 
NV. rostellum, Greg., p. 16, pl. i., fig. 20; Sm. Syn., vol. II., p. 93- 
Valve oblong, elliptical, produced at the extremities ; stria 
reaching to the median line, and oblique from the central nodule 
toward the extremities, somewhat distant. 
[*The descriptions of species given in this paper are based upon a comparison of 
the authorities quoted, a careful elimination of points upon which there is a disagree- 
ment, and then a comparison of the amended descriptions with species found in the 
waters of Staten Island. 
The works named are out of print, and most of them are so rare as to be found 
only in public libraries, hence the descriptions and figures will prove of value to stu- 
“ C, H, Kain. ] 
