KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 26. N:0 2. 35 



oblique strite equidistant, 20 to 24 in 0,oi mm.; angle about 60°. — P. Nubecula W. Swt. B. D. I 

 p. 64 Pl. XXI f. 201. Grun. a. D. p. 52. Per. V f. 26. P. Nuh. var. parvula Grun. A. D. p. 52. 

 P. Tlmmii Castr. in Per. p. 14 Pl. V f. 25 (1891). 



Marine: Finmark! North Sea! Adriatic (Grun.), Sumatra (var. in L. O, m; B. 0,oi4 mm. 

 Stxnse 26 in 0,oi mm.)! California! 



Var. intermedia W. Sm. (1853). — L. 0,i4 to 0,44; B. 0, 02 to 0,022 mm. Strise 20 to 22 in 

 0,01 mm. — P. interm. W. Sm. B. D. I p. 64 Pl. XXI f. 200. V. H. Syn. p. 116 Pl. XVIII f. 6. 

 Per. p. 13 Pl. V f. 27, 28. 



Marine: North Sea! Port Jackson! 



Var. amphijileuroides Grun. (1867). — L. 0, 13 to 0,3 mm. Strite 24 to 27 in 0, 01 mm. — P. 

 interm. v. amphipl. Grun. Hedwigia 1867 p. 29. 



Marine: Honduras (Grun.). 



Var. siihrecta Cl. (1880). — L. 0,2s; B. 0,022 mm. Transv. and obl. strise 'Vin 'Vis' '7i9 "^ 

 0,01 mm. — P. .subrect. Cl. A. J). p. 14 Pl. III f. 72. Per. V, 30. P. elongatmn var. balearica 

 Per p. 7 Pl. II f. 22. 



Marine: Greenland! Finmark! Sea of Kära! Balearic Islands! 



Var. mauritiana Grun. (Ms). — L. 0, 13 to 0,i6; B. 0,oi2 to 0,oi3 mm. Transv. and obl. 

 strise 22,5 in 0, 01 mm. 



Marine: Mauritiiis (Grun.). 



There is no diflerence between P. Nubecula and P. intermedium except in the size. By its 

 varieties P. Nubecula is closely connected with P. elongatum. 



2. P. Peragalli Brun. (1891). — V. narrow lanceolate, gradually tapering from the middle 

 to the obtuse ends. L. 0,3; B. 0,04 mm. Central nodule small, rounded. Median line straight, 

 central. Transverse striffi closer than the oblique. Transv. and obl. strise "/u (P^R). "''/19 (Brun's 

 fig.) in 0,01 mm. — P. Perag. Brun. in Per. p. 9 Pl. III f. 20. D. esp. n. Pl. XX f. 6. 



Marine: Japan, fossil (Brun.). 



Var. perangiista Cl. — L. 0,3; B. 0,oi8 to 0, 024 mm. Transv. and obl. strise '^u' 'Vie 

 in 0,01 mm. 



Marine: China (Deby Coll.)! Balearic Islands! 



Var. gracilior Cl. — L. 0,i8; B. 0,oi2 mm. Transv. and obl. strite -^jg in 0, 01 mm. 



Marine: China (Deby Coll.)! 



This species seems to be nearest akin to P. subrigidum and P. longum. It has exactly the 

 sliape of P. intermedium, but the striation is different. 



3. P. ibericum Per. (1891). — V. narrow lanceolate, with slightly rostrate, obtuse ends. 

 L. 0,09 to 0,12; B. 0,015 to 0,02 mm. Median line central, slightly flexuose, curved at the ends. 

 Transv. and obl. strise ^^lO! ^*/22 (PeR.), ^^/js in 0,oi mm. Median strise less acute. — Per. p. 8 

 Pl. III f. 12. 



Marine: Balearic Islands! 



4. P. cuspidatuni Cl. (1881). — V. broad, lanceolate, scarcely sigmoid, with produced and 

 rostrate ends. L. 0, 077 to 0,i; B. 0,022 to 0, 025 mm. Median line straight, central. Transv. and 

 obl. strise "/iq' ""An "/-"oi "V22' '^*/n ™ 0,oi mm. — P. lanceolatum var. cusp. Cl. N. E. D. p. 5 

 Pl. I f. 7. Per. V.'f. 16" 



Marine: Firtli of Tay! Port Jackson! 



5. P. directuni Grun. (1880). — V. rhombic-lanceolate, subacute. L. 0,243; B. 0,04 mm. 

 Median line straight, central. Transv. and obl. strise 18,5 in 0, 01 mm. Angle 60°. — Grun. A. D. 

 p. 53. Cl. M. D. N:o 125. Per. V. f. 29. 



Marine: Antarctic Ocean (Grun.). 



