1G6 SOME NEW OR LESS KNOWN DESMIDS FOUND IN N. S. WALES, 



Gl. molle may be classed with CI. decorum Breb. (see Wolle, 

 Besm. U. S., T. 7, f.l), CI. Wallichii Turii.,^* and CI. dilatatum 

 West.f Ifc is a perfectly tubular form, with beautifully rounded 

 ends, which are not flattened or turned back. 



Cl. calamus, n.sp. (T ii. f 4). 



CI. permagnuni, valde elongatum, gracillimum, fere rectum, 

 30-35 plo. longius quam latum, paullulo curvatum, utroque polo 

 rapidissime attenuatum, lateri})us paralleli.s, apicibus conicis, 

 subacutis. Membrana subtilissime striata. Endochroma in 

 tnenias 4 (3 ?) longitudinales parietales disposita; vesiculo central! 

 magno, terminalibus minimis. Nuclei amylac^i 18 in quaque 

 semicellula. 



Long. 1000; lat. 30; alt. 60/z. 



Moura. 



This species differs from Cl. acerosum in its almost parallel 

 sides, from Cl. praelongum in its straight ends not recurved at 

 all, and from Cl. lineatum in its equal curvature. From all 

 these also it differs in the arrangement of its endochrome in 

 the parietal taenia?. Along with Cl. Mourense I fancy it holds the 

 record for length. 



Cl. cornutum, n.sp. (T.ii. f.l 3). 



Cl. parvum, validum, lunatum, 5-6 plo. longius quam latum, 

 uno polo ad alterum et ventre et dorso regulariter arcuatum, e 

 sutura ad apices rapide attenuatum, apicibus subacutis. Mem- 

 brana glabra, lutea. Sutura evidente. 



Long. 160; lat. 30; alt. 54^. 



Botany. 



Its nearest ally is Cl. Lelbleinii Kutz., which, however, is 

 larger, swollen in the centre and more curved, but cf. Ralfs (Br. 

 Desm., T.28, f.4) and Borgesen (Cent. Braz., T.2, f.7). I have 

 not yet come across Cl. Leibleinii, nor did Nordstedt meet with 

 it in New Zealand. 



The semicell is almost exactly the shape of a rhinoceros horn. 



* Alg. E. Ind. T.l, f.l3. 

 t N. Amer. Desm. 1896, T.13, f.21. 



