iSgi.] NEW-YORK MICROSCOPICAL SOCIETY. 55 



vertically flattened and enlarged proximal portions of the fore- 

 tibias, which structures are said to be auditory organs. The tibia 

 of Scudderia exhibited shows two elliptical structures, exactly 

 opposed to each other, on the inner and outer surfaces of the 

 leg, furnished with prominent rounded rims, and plainly seen 

 by the unaided eye. When magnified, these elliptical enclos- 

 ures are seen to be crossed by many fine transverse striae. Ex- 

 hibit No. 4 is from a specimen of Orchelimum which moulted 

 in captivity. It is mounted so that a view is obtained from 

 directly in front. A longitudinal slit can be observed in each 

 elliptical enclosure, through which slits a view can be had into 

 the interior of the moult, probably indicating that here, in the 

 act of moulting, some delicate structures are torn away, which 

 formerly maintained communication with the interior. 



Dr. Skeel said his preparation was from an eight per cent, 

 solution of cocaine, which three months ago was clear, but which 

 now presented these forms of fungus. 



Mr. Stephen Helm announced that he had been successful in 

 finding at Greenwood Lake, amongst a good many other beauti- 

 ful forms, the fresh water Zoophytes, Lophopus crystallinus and 

 Alcyonella fungosa. The latter were in the ordinary orthodox 

 coenoecia. But in the lakes in Prospect Park, Brooklyn, by 

 dredging, he had found A. fungosa in the most extraordinary 

 abundance, and in colonies varying from the size of a bantam's 

 egg to that of a man's head ; one in particular, of a pointed 

 elliptical form, he found by actual measurement, was fourteen 

 inches in the long, and eight inches in the short, or central 

 diameter. On the estimate of 250 to the square inch, for the 

 lophophores are quite close together, this particular colony must 

 have contained the enormous number of nearly 100,000 indi- 

 viduals. 



They were found encrusting the stems of water plants at 

 Greenwood, and submerged twigs and branches of trees at Pros- 

 pect Park, and were solid throughout the entire mass. The 

 branch which held the large specimen also held six or eight 

 others nearly as large. The whole would have filled three or 

 four pails. 



His object in bringing these finds before the Society was two- 

 fold : — to notify the members as to the localities of these forms, 

 and to place on record the enormous size the coenoecia some- 



