= 
CHROOCOCCACER. 217 
lobes, rounded at the ends, and each terminated by a very 
delicate straight bristle, in length about equal to the diameter 
of the cell; in side view oblong, somewhat inflated at the 
Tete at each side, ends round, and each seen tipped by the 
ristle, 
Size. Cells without bristles -0062--0075 mm., including the 
bristles ‘016--02 mm., from end to end. 
In moor pools, Co, Dublin and Wicklow. 
5 tet LXXXVII. fig, 10. Cells magnified about 600 diam. After 
reher. 2 
Genus 90. SYNECHOCOCCUS. Nig. (1849.) 
Cells oblong, usually single, sometimes 2-4 connected in a 
series constituting a family. Cell membrane thin, cell-contents 
blue green ; now and then yellow or pale orange. Tegument 
absent. Division in one direction only. 
Synechococcus crassus. Archer Micr. Journ. 1867, p. 87. 
Cells broadly elliptic, about one half longer than broad ; cell 
wall very thin. 
In shallow pools. Bray’s Head, Ireland. 
Larger than the largest of Nageli’s species (S. eruginosus), from which 
it is also distinguished by its elliptic or egg-shaped cells, somewhat 
narrowing towards the gradually rounded ends, and not cylindrical, with 
rounded truncate ends. 
No figures or measurements of this species have been published, and 
only the bare description reproduced above. 
GENUS 91. GL@OTHECE. Nig. (1849.) 
Cells cylindrical-oblong, rounded at the ends; division trans- 
versal in one direction. Other characters as in Gleocapsa, 
Tegument very thick, lamellose. 
Glewothece cystifera. (Hass.) Rabh. Aly. Eur. 11., 61. 
Cells oblong-cylindrical, 2-4 associated in families ; involved 
in a special universal tegument which is globose or oval, 14-3 
times as long as brcad. Cell-contents verdigris green, 
