170 THE ROYAL SOCIETY OF CANADA 



Opephora Pacifica Petit. v23(2:4:3)s8, zl8(8:6)s8, v36(6)s6-7. 

 Plagiogramma Gregoryanum Grev. v20(6)s8, v25(8)s8, z25(10)slO, 



v46(9)s8. 

 " interuptiim Grun. v40(3:6:3)sl2. 



" pulchellum Grev. v42(15)s5. v30(12)s6. 



Pleurosigma angulatum Sm. var. strigosum Sm. vl50(17)sl8, v205 



(20)sl8, v230(22)sl8 + . 

 " Balticum Sm. var. Californicum Grun. v232 (26:27:26) 



sl4t:13L. 

 " delicatulum Sm. vl44(20)s20+. 



« /a^cioZaSm. v30(l) + 75(10)+30(l)=vl35(l:10:l)s?, and 



v25(l-2) + 75(12) + 25(l-2)=vl20(l:12:l)s? 

 sigmoid. 

 " intermedium Sm. vl60(20)s20, v200(22)s20+. 



" longum CI. var. lanceolatum Per. v260(31)sl6:15. 



" Olympianum Terry. 



" rigidum Sm. vll0(19)sl8. 



" strigosum Sm. v364(22:22:25)sl6. 



Podosira minimum Grun. (?). vl8. 

 Pseudo-nitzschia migrans Cleve. v31(13)sll. 

 Rhahdonema arcuatum Ktz. z35(28/6)s5, z53(66/16)s5, z78(48/?s5. 



" minutum Ktz. (?). zl5(20/ ?)s20, z30(20/5)s20. 



Raphoneis n.sp. v57(8)s6. Long oval with margin showing edge of 

 striae. Four rows of distinct dots on valve, the two 

 lateral rows two-thirds of full length, central. The 

 inner rows full length, more roomy, central. 

 Rhizosolenia hebetata Bail. (Bailey). 

 " setigera Brightw. z9, zl2. 



" styliformis Brightw. (Bailey & Kendall). 



Rhoiconeis genuflexa (Ktz.) Grun. z23(10)sl5, z233(14)sl9, z50(14) 



s20. 

 Rhoicosphenia curvata (Ktz.)Grun. zl5sl3, z33(5:15)sl2, v(36+10) 



(3:8:4)sl2-16, v60sl2-16. 

 Rhopalodia musculus K.tz. 60 (1 6), =EpithemiaMusculus Ktz. 



" " var. producta Grun. 22(6)s5. 



Scoliopleura tumida (Bréb) Ral. var. ( ?). 75(12)sl5. 

 Skeletonema costatum Grev. z9 with 8 costae, zl8 with 12, z33 costae 



unnoted. 

 Stauroneis Gregorii Ralfs. v58(13)s20. 



Staurosira {Fragillaria) capucina Desm. z20(5)sl5, v37(5)sl6, z70 



(98/14)sl5. 

 « « mutabilis Sm. z30(5)s8, z48( ?)s8. 



