Kil W. B. TURNER, FRESH-WATEE ALd.E OF EAST INDIA. 



liyaline and empty (h); the upper oogonium only containing a few dark granules, 

 probably aborted? The terminal oogonium (c) contains a small spherical dark green 

 body (aborted oospore?), the remainder being filled In a reddish-orange coloured gra- 

 uular mass. 



(Various fragments of Oedogonia are undetermined). 



Ord. II. OÖLEOCLLETE.E (Nag.) Pringsh. 

 Näg. Neuen Algensyst. p. 166, 1847; Pringsh. Beitr. Morph. Alg. III, p. 32; sec. Wittr. 



Gen. I. Coleochaete, Bréb. Descr. gen. dalg. p. 29, 1844; sec. Wittr. 



1. C. scutata, Bréb. 1. c, t. 2, f. 1 — 7; Pringsheim, 1. c p. 35, t. I, f. 4; t. III, f. 3, 

 4; t. IV, f. 3; fide Wittr. Alg. Gotl. p. 17. 



Northern India. 



2. C? sp. 



T. XXI, f. 11 X 500, after Wallich Mscr. No. 321. 



This singular form has a quadrangular frond composed of 4 cellules, with small 

 spines 8.5 /< long rising from the external angles, the spines being a little uncinate 

 although erect; from the centre a larger spine, 16 fi long, arises. The chlorophyll 

 masses are not continuous, but each cellule is distinct. If this be a Coleochaete it is 

 a very aberrant form. 



Fig. 11 a, basal view, is a. little oblique; b. lateral view. 



Long. 23, lat. 20, long. exter. sj). 8, 1. inter. spin. 16; crass. 14.5 ,«. 



Bengal; G. C. W. 



3. ('.? sp. (helicoidea). 



In Wallichs Mscr. No. 350 b a enrioiis form, analogous to this and the pre- 

 eeding genus, is represented. The frond is orbieular, and composed of 19 cellules 

 arranged in a helicoid manner, somewhat as in certain Pediastra, the outer cellules 

 being of course the longest and narrowest. The cellules do not approximate, but, as 

 in Coleochcete scutata, they are separated by small spaces in the thallus. No descr. 

 of this or dimensions is given by Wallich. There are no setse or little spines attached 

 to the cellules! If this proves to be a Coleochcete it might stånd as C helieoidea, Nob. 



The following organisms also appear in Dr Wallichs memoranda, but I deem 

 tliem to be of fungal and not truly algoid character: 



1. (Mpidiiiiii Tiidicum, n. sp. ( ). habitu fere Olpidio ampullaceo Al. Br. (Chytrid. }>. ^(^ 

 t. Y, f. 24 — 27!) accedens, sed paullo minor; tubula breviora et externe planequé 

 ex pari sa. 



Long. 7, lat. max. 5.5 ,u. T. XXI, f. 8; after Wallich Mscr. No. 334. 

 Parasitic upon Oedogonium sp. 



2. (Gen. et sp.?) 



»A long cylindrical cell of a. påle brown colour, containing a series of orbieular 

 or oblong cellules, strung together by contracted processes of the investing membrane 





