Capt. Marshall Hall—Gtacier Observations. 349: 
Cyruerets Wricutt, J.and H., var. aculeata, var.nov. PI. XIV. Fig. 9. 
The general characters of this form are similar to the type species; 
but the rounded processes seen in C. Wrightii are produced in this. 
form into spikes and prickles. The front edge of the shell is very 
thin; the hinder end is produced into a long spike, and the margin 
in that region is strongly aculeate. 
Distribution.—One valve from Zone i., 5 feet from the base; and 
two from Zone iii., of the Gault of Folkestone. 
CYTHERIDEA ROTUNDATA, sp. nov. Pl. XIV. Fig. 11. 
Valve of a subspherical form, with very coarse punctations show- 
ing as pimples on the inner surface. Hinge-line, a bar with a 
pitted socket at each end. 
Distribution.—One valve only from Zone i., 5 feet above the base 
of the Gault at Folkestone. 
Cytsrroprrron FoLkestToniense, sp. nov. Pl. XIV. Fig. 13. 
Valve of an oblong shape and with the mid-dorsal sulcus well 
marked. ‘The central area of the valve tolerably flat, and the slope 
to the ventral and dorsal margins steep. There is also a dorsal 
flange. The posterior portion of the carapace slightly higher than 
the anterior. Surface polished. 
Distribution.—One valve only, from Zone i., 5 feet from the base 
of the Folkestone Gault. 
EXPLANATION OF PLATE XIV. 
Fic. 1.—Pontocypris attenuata, Reuss, right valve, x 50. 
2.—Cythere Koninckiana, Bosquet, left valve, x 50. 
Ne Ona lee ? spinifera, sp. nov., right valve, x 50.4 
er lineatopunctata, sp. nov., right valve, x 40. 
», .—Cythereis triplicata, Rém., var. lineata, var. nov., left valve, x 50. 
Wd O— rudispinata, sp. nov., right valve, x 50. 
By ide a3 rudispinata, sp. noy., left valve, x 50. 
te Shere excavata, sp. nov., left valve, x 50. 
Pee Wrightii, J. and H., var. acwleata, var. nov., left valve, x 50. 
,, 10.—Cytheridea perforata, Rom., var. insignis (Jones), right valve, x 50. 
See Lil 5s rotundata, sp. nov., left valve, x 50. 
12.—Pseudocythere ? simplex, J. and H., right valve, x 50. 
», 18.—Cytheropteron Folkestoniense, sp. noy., left valve, x 50. 
III].—GuacierR OBSERVATION, MORE ESPECIALLY COLONIAL. 
By Captain Marsuauy Hatt, F.G.S., F.C.S.; 
Member of the Alpine Club. 3 
OR many years the writer has wished for the means to bring 
about some uniform system of glacier observation, and more 
especially the collection of data respecting ice-movements in British 
Colonies, and territories under British influence. When we think 
of our mountains in the Dominion of Canada and in New Zealand, 
and the vast ranges of the Himalayas (these last we shali before 
long hear about from Mr. Conway), it seems a great pity that such 
promising fields should not be adequately worked. In an article 
in the Alpine Journal, for February, 1891, the writer sketched a 
plan of operation; and in the same Journal, for February, 1893, 
asked for a committee to communicate with such Colonial Govern- 
ments as could take part. 
