210 Bacillarieae, Naviculaceae, Sfcauroneis. 



28. Stauroneis sulcata Cleve On some new or little known Diatoms m 

 p. 14, t. III, fig. 46. — Valvis linearibus, 88-109 s 8-9, apicibus 

 cuneatis, stauro margines attingente; lineis sulcisve longitudinalibus 

 validis, rhaphi parallelis; striis transversis parallelis 21 in 10 a. 



Hab. ad insulas Balearicias raro (F. Soederlund). — Quoad 

 structuram Siauron. Stodderi Greenl. (quas aquas dulcis incola est) 

 similis. 



29. Stauroneis balearica Cleve On some new or little known Dia- 8 J 

 toms p. 14, t. III, fig. 41. — Valvis elongatis, 110 s 13, apicibus 

 acutis; stauro brevissimo; striis transversis 26 in 10 a., longitu- 

 dinalibus 23 in 10 a., sub angulo recto intersectis. 



Ilab. ad insulas Balearicas (F. Soederlund). — Stauron. quar- 

 nerensi Grun. affinis. 



30. Stauroneis quarnerensis Grun. in Cleve On some new or little ao « 

 known Diatoms p. 14. — Affinis Siauron. balearicce Cleve; stauro 

 brevi; striis longitndinalibus 18 in 10 a. 



IJab. in sinu quarnerensi maris adriatici (A. Grunow). 



31. Stauroneis glacialis Castrac. Diat, Challenger p. 24. t. 27, t. 11, »97 

 Notarisia 1889, p. G94. — Magna,- valvis longitudinaliter late con- 

 vexis, transverse arcte convexis, 160=;50(ex icone), stauro lineari ; 

 striis dense transverse parallelis. 



Hab. in mari Antarctico (Exped. Challenger). 



32. Stauroneis hyalina Dannf. Diat. Balt. p. 32, t. 3, f. 20. — Val m 

 vis hyalinis, lineari-lanceolatis, 67-70 a. longis, stauro lineari, 1 



u. lato, margines attingente j striis subtilissimis, tantum paucis pr. 

 staurum conspicuis. 



Ilab. raro ad « Kalmar et Helsingfors» ad oras maris jbaltici 

 (Dannfelt). 



33. Stauroneis? angustata Ehr. Mikrogeol. (absque diagnosi) t. 15 A, m 

 f 28-29, an W. Sm ? — Valvis lanceolatis, circ. 70 s 12 (ex icone), 

 apicibus subcapitulatis; striis inconspicuis; stauro lineari, margi- 

 nes attiugente. 



Ilab. ad « Down, Mourne Mount. » Hiberniae (Shrenberg). 



34. Stauroneis? polygramma Ehrenb. Amer. 1843, p. 135, t. II, vi, f. 30, 900 

 Kuelz. Bac. p. 106, t. 29, f, 7, Rabenh. Siiss. Diat. p. 48, t. 9, f. 18. 



— Valvis ellipticis, 82-84s26, apice rotundatis, punctato-lineolatis; 

 stauro {'eix^ biscoctiformi (saltem ex icon.), margines non attingente. 

 Hab. ad insulam Cubam (Ehrenberg). 



35. Stauroneis scandinavica Lagerst. Bohusl. Diat. p. 47, Hedwigia () 

 1876, p. 211, Navicuia lacuslria (Greg.) A. Schm. N. D. p. 88, 



