Algse of the English Lake District. By Wm. West. 723 
E. didelta Kalfs, W., B., C., Hk., H. (at 2400 ft.), Black Sail 
Pass, Deepdale. 
E. cuneatum Jenner. Hp., C., Hk., Black Sail Pass, Scawfell, 
Kirk Fell. 
E. ansatum Ehrnb. Frequent. 
E. circulare Hass. H. 
E. sinuosum Lenorm. W., L., Hk., Bt. 
E. pectinatum Breb. Frequent. 
E. gemmatum Breb. Hk. 
E. rostratum Kalfs. B., Hk. 
E, elegans (Breb.) Kiitz. Very frequent. 
var. bidentatum Nag. H., B., S., Hk. 
var. ornatum var. n. Fig. 9. 
Semicellulse verrucis sex ad medium, in seriebus trans- 
versis duabus, cum granulo intus extraque ad 
angulos inferiores ornatse, etiam cum granulis binis 
prope basem incisionis polaris. 
Long. 47 /ul; lat. 29 p; lat. isthm. 8 p; crass. 14 p. 
Hp., Sk., Bn. 
E. erosum Lund. var. notabile var. n. Fig. 17. 
Semicellulse lateribus bilobulatis, lobo polari quadrato- 
truncato, anguste vel sublate inciso, intra marginem granulis 
instructis, duo ad apicem, quattuor prope incisionem, et unum 
supra medium ; a vertice visse angustiores quam forma typica, 
lateribus subrectis. 
Long. 31-33 p; lat. 20-21 p\ lat. isthm. 4-6 p ; crass. 
10 p. H., S., Sk., L. 
E. pyramidatum West. L. 
E. binale (Turp.) Balfs. Frequent, 
forma Mans West. C. 
var. elobatum Lund. Bo., H., B., 0., Bassenthwaite 
Water. 
var. retusum var. n. Fig. 6. 
Yar. semicellulis distincte punctatis, inflatione medio 
granulato, apice late retusa (nec incisa). 
Long. 27 p\ lat. 21 p; lat. isthm. 8 p; crass. 12 p. 
Kirk Fell. 
E. denticulatum (Kirchn.) Gray. Frequent. 
Genus Cosmarium Corda ; Kalfs. 
C. quadratum Kalfs. H., Hk., Deepdale. 
C. plicatum Reinsch. Near Blea Tarn. 
C. sublobatum (Breb.) Arch. H., Bo., Scarf Gap Pass. 
G. tatricum Kacib. var. novizelandicum Nordst. (Freshw. Alg. of 
New Zeal, and Austr., p. 56, t. 6, f. 6). 
Long. 46 fi ; lat. 25 p,; lat. isthm. 14 u; crass. 12 a. 
Kirk Fell. 
