Mr. C. Meresclikowsky on CnUfornian Diatoms. .')13 



171. Fragilaria coccochroma, Mer. San Peilro, rare. [M.] 

 See my paper on tlie Diatoms of the Black Sea. 



172. Fragilaria hyalina (Kiitz.), Grun. San Pedro, rare. 

 [M.] 



173. Fragilaria spiciila, ^ler., sp. n. (PI. V. fig. 17.) Santa 

 Monica, rare. [M.] 



Valve very narrow, lanceolate, with cn<ls acute, length 

 about 0"01 mm., strife invisible. Ginlle-face very narrow, 

 linear-lanceolate, with ends truncate. Forming small colonies 

 in zigzag on very short narrow stypes, parasitic on Nitzschia. 

 Endochrome composed of two narrow elongated plates asym- 

 metrically disposed — one plate nearer to one end of the frustule, 

 the second plate to the other end. 



174. Synedra aflBnis, Kiitz. San Pedro, not rare. [M.] 



175. Synedra affinis, var. parva, Kutz. San Pedro, some- 

 what rare. [M.] 



17G. Synedra grandis, Mer. Monterey, common. [M.] 

 See my iiai)cr on the Diatoms of the Sea of Azof. 



177. Synedra investiens, W. Sm. Santa Monica, on Macro- 

 ci/stis, very common. [M.] 



178. Synedra kamtschatica, Grun. Monterey, common. [M.] 



179. Synedra minuta, ^ler. San Pedro, not rare. [M.] 

 See my paper on the Diatoms of the Black Sea, parts i. 



tfc ii. 



180. Synedra nitzschioides, Grun. San Pedro, not common. 



A small form 0"053-0 UoG mm. in length. Girdle-face 

 (juite straight. Endochrome granular. 



181. Synedra undulata (Bail.), Greg. San Pedro, somewhat 

 rare. [:\I.] 



182. Asterionella formosa, Ilarr. (var.?). Northern Cali- 

 fornia. [M.] 



183. Chaetoceros californicus, Grun. (fossil?). From Wolle, 

 Diat. Auier. jil. Ixv. lig. B. 



184. Chaetoceros diadema (^Ehr.),Grun. San Pedro; Northern 

 California. [M.] 



185. Chaetoceros incurvus, var. angusta, Mit. (PI. V. fig. 23.) 

 San Pedro, very rare. [M.J 



Amongst the many endocysts of Ch. inciircus which I 



