22 p. T. CLEVE, ON SOME NEW DIATOMS. 



Cyclotella Kutz. 



1. Cyclotella Meneghiniana var. ? stelligera Cl. et Grun. 



Disc with inar<>inal striae, about 14 in 0,01 nun., and with a central star of ra- 

 diating lines, alternately shorter and larger. 

 Diam. 0,02-2 mm. 



PL V, fig. 63, '""Vi- ^- Specim. from New Zeeland; c. small specimen from 

 Lac de Gerardmer (Vosgues). 

 New Zeeland, Rotonia Lake, coll. by S. Berggren. 



Another variety stellidifera Grun. is represented by the fig. h. and is characte- 

 rized by the granulate striaj. 



Liradiscus Grev. 



1. Liradiscus (?) Capensis Cl. N. Sp. 



Circular, with a narrow, striate Tnargin (with 15 stria^. in 0,01 mm.). Disc co- 

 vered with curved and branching, but not anastomosing lines or markings, which do 

 not form a coherent network. 



Diam. U,04 mm. 



PI. V, fig. 61, '7,. 

 Marine, Cape of Good Hope in a slide sent by Mr. F. Hauck. 



Of the genus Liradiscus only four species are known, all fossil from Barbados 

 deposit. Our fornj, if it really belongs to Liradiscus, is the first known as recent. It 

 is doubtful if it not would be better to place it in Cyclotella, as it has s(jme relation- 

 ship to C. striata KiJTZ. or C. DaUasiana. 



AuliscUS Bail. 



1. Auliscus (?) insignis Cl. N. Sp. 



Disc almost orbicular with 2 rounded, not truncate processes, and divided by a 

 large cruciform blank area in to four compartments. The comp;irtments have a very 

 singular structure and seem to be covered with irregular depressions, in the F. V. they 

 are elevated and the processes rounded. 



Diam. 0,12 mm. 



PI. V, fig. 64, a. *"%, S. V. b. '"/ F. V. 



Gallapagos Island extremely rare (Eugenie Exp.). 



I am unacquainted with any Auliscus having the rounded processes of this glo- 

 rious species; it should perhaps be placed in the genus Cerataulus. 



Annother remarkable species of Auliscus (A. Ralfsianus Grev.) hitherto known 

 only in a fossil state from the Barbados Deposit, occurs in the extremely interesting 

 Gallapagos material. 



