KONGL. SV. VET. AKADEMIKNS HANDLINGAE. BAND 27, N:0 3. 151 



29. M. afflnis Ol. N. Sp. — V. narrow lanceolate. L. 0,035; B. 0,oi mm. Loculi 4 in 

 0,01 mm., almost equal, with inner margin convex, forming a band reaching to the ends. Strise 12 

 in 0,01 mm. composed of 4 to 5 elongated puncta. — Diatomiste 1 p. 163 PL XXIII f. 19. 



Marine: Galapagos Islands! 



This small species is nearly akin to M. Icariana, but has closer loculi and more coarsely 

 punctate striee. In the shellsand from Norway (CI. M. D. 311) a similar form occurs frequently 

 without loculi, which may possibly have been destroyed in the cleaning processes. 



30. M. kariana G-eun. (1880). — V. lanceolate. L. 0,05; B. O,oii mm. Central area small, 

 oAicular. Loculi 3 in 0,oi mm. larger in the middle, with convex interior margin. Striae 11,5 

 in 0,1 mm. parallel, finely punctate. — A. D. p. 17 PL I f. 3. 



Marine: Sea of Kara (Grun.). 



31. 0. notata Pant. (1889). — V. elliptical. L. 0,035; B. 0,0205 mm. Loculi 6 on each 

 side, with convex interior margin. Strise 15 in 0,oi mm., subradiate, punctate. — Pant. II p. 57 

 PL XXVII f. 392. 



Marine: Bory, Hungary, foss. (Pant.). 



Species entirely unknown to me. As the punctation is not described, it is impossible to say 

 what are its affinities. 



32. M. floridana Cl. (1894). — V. elliptical, rostrate. L. 0,043; B. 0,oi5 mm. Median line 

 straight. Axial area indistinct. Central area small, orbicular. Loculi unequal, the two to four 

 median much larger than the others (8 to 9 in 0,oi mm.), which form a narrow marginal band, 

 reaching nearly to the ends. Strise 14 to 16 in 0,oi mm., very slightly radiate, distinctly punctate; 

 puncta, about 14 in 0,oi mm., forming longitudinal rows. — M. fioridea (name altered by the 

 editor) Diatomiste II p. 55 PL III f. 1. 



Marine: Pensacola (Grove Coll.)! 



33. M. piisilla Grun. (1878). — V. narrow, linear-elliptical to lanceolate, rostrate. L. 0,02 

 to 0,035; B. 0,006 mm. Loculi about 7 in 0,oi mm., 7 to 16 in each row, the median ones larger. 

 Strise 14 to 17 in 0,oi mm. slightly radiate, finely punctate. — M. Smithii var.? pusilla Grdn:. 

 Casp. Sea Alg. p. 14 PL III f. 10. Cl. M. D. N:o 206. A. S. Atl. CLXXXV, 34. Icon. n. 

 PL II f. 8. 



Brackish and marine: Caspian Sea (Grun.), Adriatic! 



34. M. minuta Grev. (1857). — V. elliptical, apiculate. L. 0,o2 to 0,035; B. 0,oi to 0,oi3 

 mm. Loculi 6 to 9 in 0,oi mm. of equal size, quadrate to rectangular, forming a band reaching 

 nearly to the ends. Striae 15 to 16 in 0,oi mm. parallel, not interrupted, distinctly punctate. — 

 M. J. V. p. 12 PL III f. 10. A. S. Atl. CLXXXVII, 22. Icon. n. PL II f. 7. 



Marine! Seychelles! Java! Samoa! Sandwich Islands (Grun.), Honduras! Trinidad (Grun.)! 

 Bahamas (Grove Coll.)! Valparaiso (Atl.). 



35. M. (Stigniaphora) capitata Br. (1891). — V. narrow, lanceolate, capitate-rostrate. L. 

 0,03 to 0,035; B. 0,01 mm. Loculi two on each side, in the middle of the margin, rounded. Strise? 

 — D. espfeces nouv. p. 45 PL XI f. 13. 



Marine: Java, parasitical on Bhizosolenia (Brun). 



36. M. oxigua Lewis (1861). — V. fusiform to lanceolate. L. 0,025 to 0,04; B. 0,oii mm. 

 Loculi few, 2 to 6 in the middle of each margin, 4 in 0,oi mm., with somewhat rounded interior 

 edges. Strise 20 to 24 in 0,oi mm. slightly radiate. — Proc. Acad. Nat. Sc. Philad. 1861 p. 65 

 PL II f. 5. V. H. Syn. p. 70 PL IV f. 25, 26. A. S. Atl. CLXXXV f. 33. M. amygdala Leud. 

 FoRTM. D. Malaise p. 19 PL II f. 7 (1892). 



Brackish and marine: Baltic (Gothland)! Belgium (V. H.), Atlantic coast of America! 

 Behring Island! 



