48 R- Gronblad, New Desmids. 



spin. long. 76—81—80 lat. 84—86—91; sine spin. long. 59— 

 57—57, lat. 58—57—56; crass. 38—35; isthm. 15—18—15; 

 long, spinae 15—18—19 //. [N:o 962 b]. 



This variety is easily distinguished by the apical spines, 

 which are normally attached side by side, and the basal 

 ones, which are separated some distance apart and diver- 

 gent. The central area is thickened and yellowish in colour 

 and furnished with a simple series of scrobiculations arran- 

 ged in 3 / 4 of arc. 



Here belong probably also: 



(?) X. antilop. f. Borgesen, Ostgronland (1894) pi. 1 f. 16. — 

 (?) X. antilop. f. Borgesen, ibid. pi. 1 f. 17. - (?) Holacanth. antilop. 

 v. fasciculoides f., Dick, Siidbayer (1919) pi. 16 f. 4 [apparently iden- 

 tical with f. B 6 r g e s. fig. 16.] 



Hab. Keuru (C); Lempaala (W). PI. 4 fig. 28-29. 



1) var. ornatum Andersson Sverig. chlor. (1890) pi. l 

 f. 6. — (?) X. fasciculatum, Ralfs. Brit. Desm. (1848) pi. 20 f. 1 a 

 et lc (non lb!); De N o t a r i s, Elementi (18671 pi. 4 f. 36. 

 X antilop. (?) J e 1 1 i f f e, Prel. list. ( 1893) pi. 2 f. 17; R o y & B i s s e t, 

 Scott. Desm. (1894) pi. 3 f. 13; (?) M o e s z, Brass, mikr. noven (1902) 

 pi. 4 f. 5. — (?) X. antil. var. vallesiacum V i r e t. Desm. Trient. (1909) 

 fig. 12. - X. antilop. L o b i k, Desm. Pskow (1913) f. 10 (left); Gistl, 

 Bayer. Hochm. (1914) pi. 4 f. 1; (?) Carter, Chlor. stud. (1919) pi. 18 

 f. 106 107. 



As the original diagnosis by Andersson (= Borge) 

 is quite short and moreover in one respect inaccurate, I have 

 attempted to give the complete description. The Finnish 

 form agreed very well with the Swedish one, excepting the 

 fact that the central protuberance was surrounded by a 

 simple ring of scrobiculations, whilst Borge described his 

 variety as furnished with a ring of granules. I wrote con- 

 cerning this matter to D:r Borge, who very kindly informed 

 me that he, after studying the original specimens (from 

 Vaddo, Sweden) in all views, could ascertain that these 

 also were furnished with a ring of scrobiculations, not with 

 granules. — It seems to me on no account correct to unite 

 this well marked variety with the typical form as a synonym, 

 as is done by West (Mngr. IV page 64). 



