DUBLIN MICUOSCOPICAL CLUB. 105 



Euglypha tincta (E. brufinea, Leidy?). This abnormality con- 

 sisted in the complete fusion of two tests, " iSiamese-t\vin"-like, 

 the openings of each looking at right angles, that is, the longitu- 

 dinal axis of each test would intersect that of the other at right 

 angles. Hence, although the openings were not directly opposite 

 to one another, the specimen, were it the first ever noticed of this 

 species, had some resemblance to an amphistomatous form, but a 

 second look plainly showed by its complete want of symmetry 

 that it was merely a monstrous growth, but, as such, not devoid 

 of interest. 



19th July, 1877. 



Aulacodiscus Sollitianus, exhibited. — Rev. E. O'Meara exhi- 

 bited a specimen of Aulacodiscus Sollitianus from the Maryland 

 deposit. For this beautiful species, rarely found perfect, he 

 was indebted to Eev. George Davidson, Logie-Coldstone, 

 Aberdeenshire. 



Sections of Facinian Corptiscles, exhibited. — Mr. B. Wills 

 Richardson exhibited oblique and transverse sections of Pacinian 

 corpuscles taken from the pulp of the human finger ; he stated 

 that a few years ago he found such difficulty in getting useful 

 sections of these bodies that he gave the task up in despair; but, 

 thanks to the freezing microtome, any tyro can procure dozens of 

 beautiful sections of them. It is not necessary to do more than 

 make thin sections of the frozen skin of the end of the finger, 

 fi'om which, when stained, the sections of the Pacinian bodies 

 are to be removed with needles, and mounted in either glycerine 

 or glycerine-gum. 



Podophrya gemmipara, Hertwig. — Dr. E. Perceval Wright exhi- 

 bited some mounted specimens of alarge Podophryan,whichhe had 

 found pretty common on the ultimate twigs of several species of 

 redalgse. It, apparently, was the Podojjhrya gemmipara of Hert- 

 wig, as suggested by Mr. Archer. Originally described by Alder 

 as a new auimaeule found at Newcastle-on-Tyne, its life-history 

 had only within the last two years been worked out by Richard 

 Hertwig, whose well-illustrated memoir on specimens found at 

 Heligoland forms the second article in volume 2 of Professor 

 Gegenbaur's ' Morphologisches Jahrbuch.' Dr. Wright, having 

 during his investigations of some algse found it about spring time 

 rather common at Howth, thought that probably some of the 

 members might be glad to learn of its occurrence on our shores. 



Zygospore of Si aura strum turgescens, de Not.— Mr. Archer ex- 

 hibited examples of the zygospore of a Staurastrum, seemingly 

 St. turgescens, de Not., which in its form is unique. The Stauras- 

 trum itself is commonplace enough ; it resembles ^S*^. alternans, 

 probably, the most. It seems, however, in the unconjugated 

 state, distinct from it and most others coming nearest to it by the 

 arrangement of the contents, which do not form as many pairs 

 of chlorophyll-plates as angles, radiating from the centre to the 

 ■ angles, but rather stellate masses, that is, forming a number of 



