152 p. T. CLEVE, SYNOPSIS OF THE NAVICULOID DIATOMS, 



37. M. Sniithii Th\yaites (1848 fide W. Sm.). — V. lanceolate, more or less rostrate, or 

 rostrate-capitate. L. 0,027 to 0,053; B. O.oi to 0,o]c, mm. Loculi 6 to 8 in 0,oi mm. of equal 

 size, quadrate, forming a band ending at some distance from the ends of the valve. Striai 18 to 

 19 in 0,01 mm., alnio.st parallel, or radiate at the ends, punctate; puncta about 24 in 0,oi mm. 

 forming longitudinal rows. Central area small, rounded. — W. Sm. B. 1). 11 p. Gf) PI. LIV f. 341. 

 V. H. Syn p. 70 PL IV f. 13. M. hmcroJafa rar. Grun. Verli. ISCO p. fjVl) PI. VTl f. H. ill hifirco- 

 lata var. hungarim Pant. II p. 41 PL VII f. 136 (1889). 



Brackish water: Baltic (from Tornea to Riigen)! Saxony! Casjrian Sea (Grun.), England! 

 Australia! Tasmania! Fossil: Hungary (Czekehaza! etc.). 



Var. lacnsfris Grun. (1878). — Central area transverse, moderately large. Stria; 15 to If? 

 in 0,01 mm., slightly radiate. — Caspian Sea Alg. p. 14. V. H. Syn. PL IV f. 14. it/", ontiqua 

 ScHTiM. Preuss. D. p. "l90 PL IX f. 58 c, f (1862). 



Fresh water: Spitsbergen! Gulf of Bothnia! Iceland! England! Belgium (V. H.). 



Var. lanceolata Grun. (1878). — V. linear lanceolate, slightly rostrate. L. 0,o4.') to 0,0.5; 

 B. 0,008 mm. Loculi 6 in 0,oi mm. Strife 18 to 19 in 0,oi mm. radiate. — Cl. M. D. N:o 161. 

 31. Smitlm Pant. Ill PL XXXVII f 520. 



Brackish water: Gothland! 



Var. amphicephala Grun. (1878). — V. with capitate ends. — M. Smifhii /? W. Sm. M. Sm. 

 var. amphic. Grun. in Cl. M. D. N:o 161. V. H. Syn. PL TV f. 27. A. S. Atl, CLXXXV, 13, 14. 

 M. capitata Grev. M. J. N. S. 11 p. 235 PL X f. 11, 12? 



Brackish: Baltic! England, Scotland Sm., Morocco (Atl.). 



Var. intermedia Grun. (1878). — V. lanceolate, slightly rostrate. L. 0,o,t.) to 0,o3r ; B. 0,01 25 

 mm. Central area very small. Loculi 8 in 0,01 mm. Strije 18 to 19 in 0,01 mm., somewhat 

 radiate. — Caspian Sea Alg. ]). 13. 



Brackish: Caspian Sea (Grun.), South Africa (CL M. I). N:o 197), Karand, Hungary, fos.^^il! 



Var. ahnormis Grun. (1878). — V. lanceolate, rostrate. L. 0,005; B. 0,02 mm. Loculi 6 in 

 0,01 mm. in a band at some distance from the margin. Central nodule slightly transversely 

 dilated. Stride 17 in 0,oi mm. coarsely punctate; puncta 17 in 0,oi mm. — Ca.sp. Sea Alg. p. 14. 

 Icon. n. PL II f. 17. 



Brackish: Caspian Sea (Grun.). Marine: Hungary, Karand, fossil (Deby Coll.). 



Description from a specimen from Karand. 



Var. doljensis Pant. (1886). — V. elliptic-lanceolate. L. 0,03 to 0,04: B. 0,001 mm. Centi'al 

 nodule transversely dilated into a stauros. Loculi 6 to 8 in 0,oi mm. Strite 27,;') in 0,oi mm. 

 parallel (radiate on the figure given by Pant.). — Pant. I p. 22 PL X f. 88. 



Brackish: Dolje, Hungary, fossil (Pant.). 



38. M. clliptica Ag. (1833). — V. elliptical. L. 0,022 to 0,045; B. 0,oi to 0,oi8 mm. 

 Central area orbicular, small, but distinct. Loculi 7 to 8 in (),oi mm. of equal size, forming a band, 

 Avhich ends at some distance from the ends. Stria; 20 in 0,oi mm. radiate thi'oughoiit, in the 

 middle alternately longer and shorter, finely punctate. — Frustidia dlipfira Ag. in KtiTZ. Syn. 

 p. 10. M. Bansei var. eUiptica V. H. Syn. PJ. IV f. 19. Dannp. Baltic D. PL IV f 19. M. ohi'usa 

 Pant. II p. 41 PL VII f. 134 (1889). 



Brackish water: Sweden (Baltic, extremely abundant)! Saxony! England! Belgium! Ecuador 

 (Banos, Tesalia)! 



Var. australis Cl. — L. 0,o32 to 0,o3f, ; B. 0,oi to 0,oi3 mm. Loculi 9 in 0,01 nim. Striae 

 14 to 15 in 0,01 mm. coarsely punctate; puncta about 16 in 0,oi mm. 



Slightl}' brackish water; Mitchell River, Australia! Rioja, rep. Argentina! 



Var. Dansei Thw. (1856). — V. nai^row, linear with cnneate ends. L. 0,o35 to 0,04 ; B. 0,oi 

 to 0,012 mm. Strite I8 in 0,oi mm., finely punctate. — M. Dausci Tinv. Sm. B. D. TI p. 64 



