KONGL. SV. VET. AKADEMIENS IIANDLIXOAR. HANT) 27. Nto 3. 198 



p. 439 PI. VI f. C), 7. Achnanfhes inflata Grun. A. D. p. 19. Naricula (lata Lkud. Fortm. I), de 

 Ceylon PL III f. 28. Aclin. hrrripes var. tumidnln Grun. A. I), p. 19. 



Fresh water, in tropical and subtropical regions: South Tyrol ((it'iiii.), I'dinpcii ((iiiiii.), 

 Java! Australia! Tasmania! New Zealand! Tahiti! Brazil! Ecuador! Cuba (Gi'un.). Pxmrbon and 

 Mauritius (Ehb.). 



Var. Smithiann Grev. (18G6). — Ends cuneate. Striffi coarser. — Mono(irnwma Suiithiana 

 Grev. T. Bot. Soc. Edinb. Vol. VIII PI. VI f. 3 to 5. 



Fresh water: Mauritius and New Hebrides (Grun.). (Cameroon, Africa! 



7. A. brevipes Ag. (1824). — Linear-lanceolate, frequently slightly constricted in the 

 middle, with cuneate ends. Upper V. with somewhat excentric axial area and transverse rows of 

 coarse puncta forming irregular longitudinal rows. Lower V. with indistinct axial area. Outral 

 nodule transversely dilated into a stauros, reaching to the margin. Striai slightly radiate. Frus- 

 tule genuflexed, stipitate. Connecting zone finely and transversely striate. 



Var. parrula Ktlxz. (1844). — Elliptical. L. 0,oi to 0,o2; B. (),oo.') to Ojoor mm. Upper V. 

 with 12 to 18 striae in 0,oi mm. Lower V. with about 15 stria? in 0,oi mm. — A. parviila Kii'tz- 

 Bac. p. 7() PL XXI f. 5. Grun. A. D. p. 19. V. H. Syn. p. 129 PL XXVI f. 25 to 28. A. pa- 

 chypns Mont. Ann. Sc. nat. (2) T. VIII p. 348 (accord, to Kiitz.). KtJTz. Bac. p. 76 PL XXI f. 2. 



Brackish water: Trondhjem! England! Ostend (V. H.), Calvados! Galapagos Islands! 



Var. Lcudu(/fri Temp. a. Brun (1889). — Broadly lanceolate with obtu.se ends. L. 0,075 to 

 (),09r); B. 0,o;i to 0,0.37 mm. Strise of the lower V. 6 in 0,oi mm. — Achn. Lend. J), foss. du 

 Japon p. 9 PL IX f. 11. 



Marine: Japan, fossil (Temp. Br.). 



Var. typica Cl. — Linear with cuneate ends, frequently constricted in the middle. L. 0,o7 

 to 0,1; B. 0,02 mm. Upper V. with slightly excentric axial area. Stria; 7 to 8 in 0,oi mm. 

 coarsely punctate; puncta 7 to 8 in 0,oi mm. forming undulating longitudinal rows. Lower V. 

 with indistinct axial area. Central area a narrow fascia, reaching to the margin. Stria; 7 to 9 in 

 0,01 mm. slightly radiate and coarsely punctate. — A. brevipes Ag. Syst. Alg. p. 1. KiJTZ. Dec. 

 N:o 77, 78 (according to Lagst.) 1833. W. Sm. B. D. II PL XXXVII f. 301. V. H. Syn. p. 129 

 PL XXVI f. 10 to 12. A. salina KxJTz. Linnfea 1838 p. 72. 



Brackish water: Arctic America! Greenland! Spitsbergen! Finmark! North Sea! Baltic! 

 Caspian Sea (GriTU.), Japan, fossil! Monterey and Mauritius (Grun. forma contracta A. I), p. 19). 



Var. marffinafa Cl. — Rhomboid-lanceolate, subacute. L. 0,12; B. 0,05 mm. Upper V. with 

 excentric, linear axial area and transverse striae, 7 in 0,oi mm., composed of large quadrate alveoli. 

 Parallel to the margin and close to it, is an elevated line or keel. Connecting zone with longitu- 

 dinal rows of coarse puncta, 6 to 7 in 0,oi mm. 



Marine: Madagascar! 



Var. rapensis Cl. — Narrow, linear lanceolate, tapering from the middle. L. 0,o.'); B. 0,oi 

 mm. Upper V. with very excentric axial area and 9 granulate stria; in 0,oi mm. Lower V. with 



11 almost parallel .stria; in 0,oi mm. comj)Osed of about 13 puncta in 0,oi mm. 



Marine: Cape of Good Hope! 



Var. suhcrrnulata Cl. (1891). — Narrow elliptic-linear, obtuse, with crenulated margin. L. 0,047; 

 B. 0,012 mm. Upper V. with very excentric axial area and parallel st7'ia\ S in 0,oi mm., com- 

 posed of large puncta (7 to 8 in 0,oi mm.). Lowei" V. with 11 striie in (>,oi mm. Puncta 11 to 



12 in 0,01 mm. — Diatomiste I p. 50 PL IX f. 5. (1. 



Brackish water: New Guinea! 



Var. intermedia KtiTZ. (1833). — Linear-elliptical, with rounded ends. L. 0,o3 to 0,o.-); B. 

 0,01 to 0,011 mm. Stria; about 10 in 0,oi mm. — Achu. int. KtiTZ. Dec. N:o 21 (according to 

 Lagst.). Lagst. Ofvers. K. Sv. Vet.-Akad. Fiirh. X f . 2 a. A. siihsessilis KiiTZ. Dec. N:o 42 (1833) 



K. Sv. Vet, AkiKleiiiieiis Haiulliiigiir. Bd 27. N;o 3. 25 



