xlvill APPENDIX. 
DESCRIPTION OF PLATE IIL., 
ILLUSTRATING 
MR. ARCHER’S PAPER ON SAPROLEGNIEA. 
(p. 136). 
Fig. 1. . Chain of four oogonia in Saprolegnia androgyna, sp. nov., showing the 
lateral male branchlets emanating from the oogonia; the two upper 
oogonia with fully-formed oospores, the lowest but one showing the con- 
tents commencing to become formed into primordial cells, or oospores ; 
(Befruchtungskugeln, Pringsh.)—the future oospores; the lowest 
oogonium with the granular contents dense, but unchanged. 
» 2. . A single terminal oogonium of Achlya cornuta, sp. nov. ; its granular con- 
tents not yet commenced to be formed into a primordial cell or cells. 
», 3 and 4. Series of oogonia, the first smaller, and with one oospore each, the latter 
larger, with a greater (variable) number ; to the right of middle oogonium 
(Fig. 4) is seen a curious depressed lobate form assumed by one of the 
extensions, instead of the usual tapering cornua. 
» 5. . Shows the development of the lateral branch just under an oogonium ; and, 
», 6. . Three such branches, two of which have become shut off at their extremities 
and developed each an oogonium, each with a single oospore. 
[Note.—By an unfortunate oversight the above Plate is referred to in the Paper on 
Saprolegniex (p. 136), as Plate VI, in place of Plate III.] 
