Systematik. 411 



Navmda KiUzingiana n. sp. Frustules linear, valves scarcely iuflated, with roumled 

 ends and threc or four conspicuous Striae radiating from tlie central nodule aud wbich 

 are prominent also along witli the central nodule in f. v. Frustules in f. v. quadrangular, 

 frcquently adhering and forming a short filament (Diadesinis) and with two distinct intra- 

 marginal (bead-like) vittae at either end. Length ,0006— .00085, breadth f. v. .00035, s. v. 

 .00021, Striae about 50 in .001. Avranches, Normandy, France. 



Navicula parvula n. sp. Frustules small, valves lanceolate with acute apices. Striae 

 divergent and readily seen. Frustules linear, in f. v, with rounded euds. Length .0005. 

 breadth .00015. Striae 42 in .001. Villerville, France, 



Nitzschia Kittoni n. sp, Frustules linear, valves lanceolate, with sharp and slightly 

 constricted apices, marginal puncta very distinct, 16 in .001 and quite prominent in f. v. 

 Striae faint. Length .0007— .001, breadth .0002, River Catuche, Caracas, Venezuela. 



Baphoneis aiistralis n. sp. Frustules somewhat variable in size, valves cuneate, 

 rounded at the larger end and coarsely moniliform striate, Striae interrupted by a smooth 

 blanc Space, frustules slightly cuneate in f. v. Length .0005 - .00086, breadth .00022 to .0004 

 Striae about 30 in .001. Royal Sound, Kerguelens Land. 



Bhizosolenia Eriensis n, sp. Frustules of medium size, compressed and somewhat 

 flattened, six to twelve times as long as broad; annuli on the dry frustules conspicuous, 

 altemate and with a zig-zag median counection, valves finely striate, bristles nearly or quite 

 as long as the frustules, and with the calyptra excentric, lying nearly in a line with one 

 margiu of the frustule wheu the flat side is in view. Length of frustules .003— .006. Buffalo 

 New York; Lake Erie; Cleveland, Ohio; Lake Michigan. 



Im American Journal sind diese Formen auch abgebildet. 

 26. Cleve. New Diatoms. (No. 6.) 



Navicula virginen Cl. This form varies somewhat as to outline, being often lightly 

 constricted at the ceutre. Apices produced. Median pores approximated. Striae very fine 

 only visible in baisam mounted specimens by oblique light. The Striae are parallel and not 

 interrupted. This form seems to te closely allied to N. Janischiana Rab. Virgin Islands. 



N. Ecyula Grün, et Cleve. S. V. rectangular, with parallel margins. Striae coarse, 

 radiant, reaching median line, abbreviate in the middle, about 7 in ,01 mm. Median pores 

 somewhat distant, median lines almost straight. Length .0884 mm., breadth .0136 mm. 

 Virgin Islands, Campeche Bay. Nach Cleve und Kitton wahrscheinlich Varietät von N. 

 rectangulata Grev. 



N. Santi Thomae Cl. Valves uudulate, apices produced, Striae coarse, radiant, 

 marginal, shorter as they approach the central nodule, 5 6 in .01 mm, L. .061 mm. 

 B. .0255 mm. Allied to N. Botteriana. 



N. Bartholomaei Cl. Valves strongly constricted ad the middle, ends cuneate. 

 Sculpture large parallel costae, not reaching either margin or median line. The central 

 nodule short, round. The margins have a small row of small granules L. .075. St. Bartho- 

 lomew. Perhaps identical with N. Perryana Kitt. 



N. fornicina Grün. Valve composed of two rhombic halves, connected by a very 

 narrow isthmus, which is slightly enlarged in the middle. Striae parallel not reaching the 

 median line and wanting in the middle of the valve, very delicately punctate, 6 in .01 mm. 

 L. .057 mm., B. of lobes .012 mm., of isthmus .004— .005 mm. Campeche Bay. Kitton sah 

 eine ähnliche Form aus dem Sulu Archipel, doppelt so gross mit unterbrochenen Riefen. 



N. Goesii Cl. Valves elliptical, with produced subcapitate euds. Striae distmct, 

 14 in .01 mm reaching median line, parallel, slightly radiant as the apices, longitudiual 

 Striae slightly wavy. L. .07 mm., B. .024 mm. St. Bartholomew. 



N. CBrebissoniaJ? Weissfloyii Gruu. Valve broad, rhombic, lanceolate with obtuse 

 ends. Central nodule linear, oblong, slightly constricted in the middle; terminal nodules 

 somewhat distant from the euds of the valve. Striae radiating, punctate, 12 in .01 mm, 

 reaching the narrow median line. L. .085 mm,, B. .03 mm. Campeche Bay (Gr.) Colon 

 (Kitton). 



N- (Alloioneis) Gründleri Cl. et Grün. Valve broadly linear oblong, with cuneate 



