93 
leve, var. Olevet. Side by side with the examples Mr. Archer 
showed that author’s figure (“Anteckningar om Skandinaviens Des- 
midiaceer,”’ Upsala, 1869, p. 18, fig. 9, a and 0, in ‘Nova Acta 
Societ. Upsal.,’ vol. vii), which is excellent, and leaving not the 
smallest doubt of the identity of the two forms. Whether, indeed, 
the very elegant form in question might or might not really more 
correctly be regarded as quite distinct from St. eve (Ralfs), Mr. 
Archer felt unable to do otherwise than leave the point in abeyance, 
as it would be premature in him to venture to speak decidedly, as 
he had not yet had an opportunity to see veritable examples of the 
typical St. leve (Ralfs); still, he suspected they would prove 
distinct. The present form is an exceedingly elegant one—indeed, 
far prettier than one might think from the figure merely. 
Mr. Archer also showed examples of Dr. Barker’s new Stauras- 
trum, first detected by him at Glengariff, and called S¢. elongatum 
(‘ Minutes Dubl. Micros. Club,’ in ‘ Quart. Journ. Micros. Sci.,’ vol. 
ix,n.s.,p. 424). The specimens now exhibited from Kylemore, Con- 
nemara, though comparatively few, were more numerous than they 
had occurred in any gathering made at Glengariff. It must, however, 
be accounted a rare and scanty form, and, so far as experience goes, 
seeming confined to our western districts. 
Mr. Archer likewise showed a new species of Euastrum, from 
Kylemore, County Galway; this he had taken on a former occasion 
at Glengariff, but he had not had an opportunity to exhibit a 
specimen, nor did he record it pending seeing the figure of Professor 
Cleve’s Euastrum intermedium. Thanks to that gentleman, he 
possessed a copy of his paper, and there could hardly be a doubt but 
that the present form was quite distinct therefrom. The forms 
which most resemble the present are, however, undoubtedly ZL. inter- 
medium (Cleve) and #. ansatum (Ehr.); this latter common 
species Mr. Archer exhibited side by side for sake of contrast and 
comparison. It would be of little value to give here a description 
of this form, unaccompanied by a figure. This he would postpone 
for a little, till time permitted to put together this and a few other 
new forms he had in view. It would suffice here to mention that the 
thickened prominences on all the protuberant parts, and the thickened 
rounded elevation on each front surface of the segments, which are 
dotted, coupled with the small size of this form and its broadened 
depressed segments, all combined, would render it not readily to be 
mistaken for any other described Euastrum. 
Professor KH. Perceval Wright desired to mention that on micro- 
scopical examination of a section of the so-called Myreosteon 
Higginsii (Gray) the organism appeared to be some part of the bony 
skeleton of a fish. 
Dr. Pearsall exhibited slides containing material taken from the 
stomach of a trout from the Annamoe River, Co. Wicklow. Some 
spicules were noticeable, also various diatoms. Amongst the latter 
Mr. O’Meara identified Himantidium undulatum, Navicula rhom- 
boides, and Tetracyclus emarginatus, which last, he said, was of very 
rare occurrence in Ireland, ueyer himself having taken specimens. 
