374 APPENDIX. 



Fam. xiv. Achnauthece. 



Achnauthidium lanceolatum. Pelouse ; Cow Creek ; tributary of 



Kootenay. 

 Achnauthes brevipes m. Shores of Vancouver Island, and at 8 fathoms. 



- exilis. Cow Creek. 



Fam. xv. Cymbellece. 



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. Gomphonemece. 



Gromphonema marimim 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. 



- capitatum. Kootenay River. 



Herculaneum. Columbia River ; Spokan River; Cow Creek. 



- acuminatum. Pend'Oreille River. 



- tenellum. British Columbia. 



constrictum. Lake Osoyoos. 



Fam. xvii. Naviculacece. 



Navieula 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. 



