374 APPENDIX. 
Fam. xiv. Achnauthee. 
Achnauthidium lanceolatum, Pelouse; Cow Creek; tributary of 
Kootenay. 
Achnauthes brevipes m. Shores of Vancouver Island, and at 8 fathoms. 
- exilis. Cow Creek. 
Fam. xv. Cymbellec. 
Cymbella maculata. Tributary of Kootenay River. 
— Ehrenbergii. Columbia River. 
Cononema cymbiforme. Kootenay River; Pend’Oreille River. 
— lanceolatum. Columbia River; Kootenay River; Spokan River ; 
Lake Osoyoos. ‘ 
— lanceolatum, var. cornutum. Columbia River. 
— cistula. Columbia River. 
Amphora ovalis. Columbia River; Pend’Oreille River; Cow Creek. 
— ventricosa m. Vancouver Island. 
Fam. xvi. Gomphonemec. 
Gomphonema marinum m. Shores of Vancouver Island, and at 10 
fathoms. 
— dichotornum. Tributary of Kootenay River; Spokan River. 
— curvatum. Tributary of Kootenay River. 
— geminatum. Columbia River; tributary of Kootenay River. | 
— ecapitatum. Kootenay River. 
— Herculaneum. Columbia River; Spokan River; Cow Creek. 
— acuminatum. Pend’Oreille River. 
— tenellum. British Columbia. 
— constrictum. Lake Osoyoos. 
Fam. xvii. Naviculacee. 
Navicula dicephala, Tributary of Kootenay River. 
— rhomboides. Tributary of Kootenay River; Columbia River; Moyee 
River. 
— elliptica. Tributary of Kootenay River; Lake Osoyoos; Pend’ Oreille 
River. 
— maxima. Columbia River. 
— gibberula. Columbia River; Pend’Oreille River; Cow Creek. 
— didyma m. Shores of Vancouver Island, and at 8 fathoms. 
