POrerwenas su LSS 
THE FRESHWATER ALG OF MAINE. 
By Wriau West, capt By. Oe 
(PuatE 815.) 
By the kindness of Professor Aubert, of Maine State eet 
I have been enabled to examine some additional material which 
ath sent me anh i gatherings made in the: State of Maine, rok : 
previous lists; some of them are quite r a bebided are additional to 
the Flora of the United States, and a aa: apes ies and varieties are 
new to science. A large majority of the species previously recorded 
have also been observed from other localities, and some of them very 
profusely. As the material was again collected for Desmids, there 
are few other nee present in sufficient quantity for naming, save 
the minute for 
Zygogonium qanner (Vauch.) Kiitz. was present in fine ¢ 
jugation from a ocality between Orono and Bangor. Xanthan 
antilopeum (Bréb.) Kiitz. var. polymazum Nord. was notice fair 
abundance ; it agreed well with the form as described and figured 
= Nordstedt (Bidrag till kéinn om Sydligare Norges Desmidiéer, p. 38, 
20), having the characteristic hexagonal semicells of the species, 
Pe the daaeiridiae tubercles of the variety, the latter being in the 
same position as those figured by Nordste 
I must not forget to acknowledge. the most valuable help ‘of’ my 
son, G. S. West, who has aided me considerably i in the gaara 
of this paper 
.. ime Se Bary. Scarbro’. 
Spherozosma punctulatum, n. sp Be fills: Santis aiid 
agina mucosa ;. cellule sai latius quam longius, sinu sublineari 
extremo am pliato : semicellulee subrectangulares pyramidateve 
apicibus latissime truncatis; a latere vis ae ; mem- 
punctata, punctis pakedede ins ae ; glandulis con- 
nexivis propinquis vel dissitis. Long. 14-16 p; ‘lat. 17°5-20 Bi 
lat. isthm. 8-9-5 4; crass.10 p. Figs. 7 a 9.—Scarbro’, frequent. . 
This differs from 8. vertebratum Ralfs in cs rere form of its 
semicells, its different sinus, and its punctate mem 
S. granulatum Roy et Bis ss. Long. 9‘5-10°5 p; lat. nt. 95-10" 5 aj 
lat. isthm pe. Be 
Bpohlglasiain pulchellum m Arch. var. bambusinoides (Wittr.) Lund. 
Long. 15 »; lat. ad bas. semicell. 9°5 p; lat. ad apic. 5 p; lat. 
isthm. 2°5 ». Scarbro’. 
Onychonema leve Nord. Between Orono and Bangor; Scarbro’. 
Si siavidaebad Nord. Scarbro’, much commoner than the 
Hyalotheca mucosa (Dillw.) Ehrnb. Scarbro’ pote 2 33 dubia Kiitz. 
var. levis Wittr. (Anteck. Skand. Desm.p. 27, fig. 13). Searbro’, rare. 
Journnat or Borany.—Vou. 29. [Dze, 1891.] Qa 
