120 DEPARTMENT OF THE NATAL SERVICE 



4. Diatoms from streams, Tichborne, Ontario, November, 1918. — Continued. 



Cynuitopleura elliptica (Breb.) S. Sm. y150 (60) s3. 



Solea (Breb) W. Sm. 72, vlOl (20:17:20) s7-8, vl55 (30:20:30) s8. 

 Cymhella cistula Hempr. v84 (5:20:5) s7-8. 

 '' cuspidata Ktz. v60 (5 :21 :5) s7-9, 67. 

 " cymhiformis E. v77 (5:15:5) s7-8. 



gastroidesKtz.ylQO (10'M:10) sS-10. 

 " ZawceoZaia ? vl96 (15:40:15) s7-9. 

 Epithemia gihha (E) Ktz. vl25 ( ) s7. 

 " zefera (E) Ktz. v50 (6:10:6). 

 Eunotia diodon E. v30 (9) sll. 



" major (W. Sm.) Eab. (fragment.) 

 Frustulia rhonihoides var. amphipleuroides Grun. vlOS (8:20:8). 

 Fragilaria construens E. var. 9 (5) sl5, 10 (5) sl5. 

 " virescens Ealfs., 38 (7) sl7, 58 (8) sl7. 

 Gomphonema acumin<itum E. var. ? v50 ( ) sll. 



" constrictum E. 40. 



Hanizschia amphioxys (E) Grun. var. vivax z72 (10:8:10) s5 & 19. • 



" elongata Grun. v300 (4 :13 :4) sl4. 



Melosira cfenulata Ktz. zll (8) sl8. 

 Meridian circulare Ag. z32 (22:4) slO. 

 Navicula affinis Ktz. v52 (7:13:7). 



" hicapitata Lagersted. v46 (6 :11 :6) s9-10. 

 cryptocephala Ktz. (?) v45 (3:11:3) sll. 

 '' cuspidata Ktz. v98 (4 :23 :4) sl4. 

 " Iridis var. duUa E. v52 (6 :13 :6) sl9. 



" legumen E. var. decrescens Grun. v87 (11 :17 :18 :17 :11) s9. 

 " ma;or Ktz. v24D (36:40:36) s4.5. 

 " peregrina Ktz. vllO (12 :25 :12) s7. 

 " radiosa Ktz. var. acuta W. Sm. v72 (5:11:5) SlO. 



silicula (caloneis) (E) CI. v 58 (12:11:12:11:12) sl7 ? or N. limosa Donk. 

 " Smithii Breb. 

 " stauroneiformis Lewis. 



" stauroptera var. parva E. v72 (10 :11 :10) &10. 

 " viridis Ktz. v51 (12) s9-10, z47 (10) slO, v72 (13) s8. 

 Nitzschia sigmoidea (E) W. Sm. v350 (10) s6-7. 



" vermicularis Ktz.) Griin. v90 (2:4:2) sl3 & ?, vl55 (1.5:5:15) sll & vl70 

 (1.5:4:1.5). 

 Stauroneis anceps E. v60 (5:13:5) s20. 

 " Gregorii Kalf s. ( ?) 



" Phoenicenteron E. v96 (6:20:6) sl6, v275 ( ). 

 Stephanodiscus Niagarae E. (33) s3 & 12, (46) s3 & ;L2, (50) s3 & 12. 

 Surirella rolusta E. 165 (42) 82. 



« ? v70 (4 :11 :4) s5-6 & 20. 



Synedra acus var. angustissima Griin. v275 (4:4:54:4) slO. 



" Gaillonii E. v255 (5 :7 :5) s9. 

 Talellaria fenestrata 58, 72, 80, 95, 130. 



(Spicules of Fresh Water Sponges, smooth and tubereulate, present, and one fine 

 birotulate also present). 



5. Diatoms from lake mud — Cobalt, Ontario. 



Amphiprora omata Bail. 

 Amphora aflnis Ktz. 

 Cocconeis placentula Ehr. 

 " lineaia Griin. 



