14 
. j 
i 
Bulletin of the Natural History Society. 
has faint, spiral striae or ribs. This Dr. Allen has not deter- 
mined, but thinks it may be a variety of the last named species. ! 
DR. T. F. ALLEN’s NOTES ON THE CHARACE.F OF LAWLOR’S LAKE. 
“In Xo. 16 are found the seeds of a Chara which with variations occur 
in most of the numbers, though sparingly in the higher numbers 
(7, 8 and 9). This form has seven prominent angles, varying to 6 
and 8. Its length varies from 48026 to 63426, and its breadth from 
408 to 48826. The accompanying drawings magnified 50 diameters 
represent this form, (Figures Xo. 1 to 6.) 
In Xos. 26l, 361, 4a and 66 and c. is a small globular form, 
quite distinct ; angles usually six varying to 5 and 7, prominent ; 
length 340 to 36526 breadth 315 to 34026 * slightly longer than broad 
(Figures Xo. 7 to 11.) 
From 2(T6 up through all the numbers is found a large, variable, 
but definite form. The striae are numerous, from 11 to 14 in num- 
ber, the angles prominent, sharp. Length 536 to 55026, breadth 
390 to 512 i 6. Quite variable in form and size, but we have found 
it impossible to distinguish definite characters, owing to the innu- 
merable intermediate forms. The most pronounced forms are given 
in Figures 12 to 20. 
There is a form found now and then, especially in Xo. 6, with 
very faint striae, but in other respects similar to the preceeding. 
This form is given in Figures 21 and 22. 
The recent Chara from the adjacent pond (Lawlor’s Lake) belongs 
to the species Chara intermedia, A. Br., probably to variety Ameri- 
cana, A. Br., but as it is immature (in the sample sent) the seeds 
cannot be inspected. • 
Note 1. — The first mentioned species belongs, doubtless, to a form 
or forms of Chara coronata Ziz. This species is exceedingly varia- 
ble in size and general appearance ; the seeds found in these deposits 
approach closely to our common form, known as variety Schweinitzia, 
but the angles are much more prominent and sharp, and its outline 
and general appearance differ considerably. (Figs. 1 — 6). 
Note 2. — The small globular seeds may belong to a Nitella; we 
know of no Chara with similar nuclei. The species cannot be 
determined, though from the character of the nuclei we might infer 
