[bailey-mackay] diatoms FROM VANCOUVER ISLAND, B. C. 165 



Cocconeis scutellum var. compressa n.v. v21(12)slO. Slightly com- 

 pressed on the sides. Marginal rim 3 

 microns wide. Curved transverse rows 

 of dots which align in straight longi- 

 tudinal lines, with long, and transv. axes 

 just visible passing through the centre. 

 « « " japonica A.S. v45(30)s8-6. Dots quadrate. 



" " " Morrissii Sm. v56(44)s7-5. 



« " " parva Peragallo. vl2(7)s8, v21(10)s8. 



« « " stauriformis Sm. vl6(10)sl3, vl8(9)sl0. 



« « " riparia Brun. v28(19)sl2-5. v41(30)sl0-8. 



n.sp. v(60(34)s9, v58(33)sl0, v62(33)sll:9, v63(49)s8:9-15. 

 Near C. maxima Grun., C. Lorenziana 

 A. S., and C. Brittanica Naeg. Marginal 

 band 4 microns wide approximately, with 

 the coarser sculpture. Midrib somewhat 

 naviculoid occasionally. The following 

 related forms occur: v43(30)s4:9, v67 

 (47)s4:9. 

 Corethron Hystrix Hensen. Diameters of the bowl-shaped discs 18, 



20, 24, 40 and 45 microns, with from 

 16 to 25 long seta projecting from the 

 rims. 

 Coscinbdiscus asteromphalus Ehr. 



" centralis Ehr. v45 to v78, s6 to 7, to 8. 



" concinnus Sm. v54s8-12, v85s8-12, vl20slO-ll-12. 



" curvatulus Grun. v48sl0, v54s8, 10 or 12 fascicules. 



" debilis Grove, v50sl7, v75sl6. 



" divisiis Grun. v37, v50s8. 



" excentriciis Ehr. v33sl4, v65s5-6, v93s5-6. 



" fasciatus (Kendall). 



" griseus Grev. var. v31sll-12. 



" Kutzingii A.S. v40sl5. 



" lineatus Ehr. v30s8, v55s7. And two varieties. 



" oculus-iridis Ehr. vl40s3-5-15, v285s4- . 



" patera Castr. (Kendall). 



" radiatus Ehr. var. minor A.S. v25sl6. 



" radio-fur catus n.sp. v40s8-10, v43s8-12. Rays bi- 



furcating. 

 " radiosus Grun. v30, v36s20. 



" Rothii Grun. v36, vl26s8. Sixteen fascicules with 



apicules. 

 " subtilis Ehr. v53slO, v78s8. 



" stellaris Roper, v65sl4. 



Sec. IV, 1915—11 



