Baeillarieae, Surii^ellace», Campylodiscus. 631 



07. Campylodiscus groenlandicus Cleve Diat. of Arct. Sea 1873, 2521 

 p. 13, t. 2, f. 9. — Orbiculaiis, 96 u.., diam. metiens, costis circi- 

 ter 32-34, remotis (circ. 1 V4 'ii 10 [-'■■), delicatis, radiantibus, area 

 mediana levi ampla, pseudorhaphe nulla, niargine disci tenuiter 

 striato. 



Hab. in limo maritimo ad oras Groenlandiae (Clbve). — Cam- 

 pylodisGo bicostato W. Sm. proximus. 



98. CampyiodJSCUS exiguus Gi-un. in Wien. Verhandl. 1862, p. 441, 2522 

 T. XI, F. 4, Rabenh. Fl. Eur. Algar. I, p. 49. — E minimis, or- 

 bicularis, 20 a. diam. vix aequans, costis abbreviatis, radiantibus, 3 



in 10 y.., area media orbiculari, seriebus duabus striarum punctata- 

 rum parallelarum ornata, pseudorhaphe lineari angusta. 



Ilab. in mari adriatico ad « Porto Vooss», rarissime (D. Lo- 

 RENZ). — Formis minoribus Campylodisci Hogdsoni similis. 



99. Campylodiscus Ehrenbergii Ralfs ia Pritch. Inf. 1861, t. 12,2523 

 f. 12-14,22-23, Rabeah. Fl. Eur. Algar. I, p. 50, Grun. in Wieu. 

 Verhandl. 1862, p. 437, Surirella Campylodiscus Ehr. Verb. p. 136, 



T. 3, V, f. 6, Kuetz. Bacill. p. 59, t. 28, f. 26. — E minimis, 

 frustulis ovato ellipticis, utrinque sequaliter rotundatis, flexuosis; co- 

 stis abbreviatis, 4-4^2 iii 10 f^- 



Hab. in thermis aponinis Italia3 (Ehrenberg); etiam in Mexico 

 (Ehrenberg). 



100. Campylodiscus americanus Ehrenb. in Ber. Berl. Akad. 1819, 9524 

 p. 85, Mikrogeol, 1856, p. 68, Felsbild. Bacill. in California 1870, 



p. 52, t. 3, 11, f. 1. — Frustulis dilatatis, tortuosis, ad sell?e for- 

 mam curvatis, situ infloxo subcordatis, margine late celluloso tur- 

 gidulo, area mediaua laxe venosa; costis marginalibus oblougis, 

 2-21/0 in 10 u.. 



Hab. e stratis oregonicis ad «Fallriver» (Ehrenberg). 



101. Campyiodiscus nanus Schum. Diat. hoh. Tatra p. 56, t, I, f. 12. ^525 

 — Valvis rotundato-ellipticis, paullum cordiformibus, falcato-tortis, 

 margine macalis utrinque 8-10, disco radiis rectis, area mediaiiu 

 lineari. 



Hab. in regione tatrica (Sohumann). — An revera Campylo- 

 discus f 



102. Campylodiscus Surirella Ehr. Abh. 1845, p. 362, Pritch. laf. 2b?6 

 p. 802, Grun. in Wien. Verhandl. 1862, p. 437, Rabenh. Fl. Eur. 

 Algar. I, p. 50. — Major, oblongus, flexuosus, costis abbreviatis, 

 area levi. 



Hab. in fontibus aquae dulcis in Ilispania (Ehrenberg). 



