1879.] 303 [Fewkes. 
‘ 
LEUCKART. Zur niéheren Kenntniss der Siphonophoren von Nizza. Berlin, 1854. 
Zoologische Untersuchungen. Giessen, 1853. 
Bericht u. d. wiss, Leist. etc. nieder. Thier. fur die Jahrgange 1861-1862. 
McCrapy. Gymnopthalmata of Charleston Harbor. 1857. 
METSCHNIKOFF. Studien tiber die Entwickelung der Medusen und Siphono- 
phoren. Zeitschr. f. wiss. Zool. Bd. XXIV. 
MUELLER, P. E. Iagttagelser over nogle Siphonophorer. Kopenhagen. 1871. 
SARS. Middel havets Littoral-Fauna. 1857. 
Voer. Rech. sur les Anim. infer. de la Mediterranée, Premiére Mém. sur 
les Siphonophores de la Mer de Nice. 
EXPLANATION OF PLATE 2. 
1. Rhizophysa filiformis. a. Float. 6, Stem. ce. Feeding polyps. d. Ten- 
tacle. e. Grape-like clusters. 
2.- Customary position of the float on surface of water. 
8-8. Tentacular knobs of the first kind. 
9-13. Tentacular knobs of the second kind. 
14-22. Botryoidal clusters found between the polyps, and known as sexual 
organs. 
23-29. Early stages of development of the first kind of tentacular knob. 
View from the side. 
All the figures are optical sections except fig. 1. 
In response to a request from the chair, Dr. M. EH. Wads- 
worth gave a brief sketch of some results of his studies in the 
Lake Superior region during the past summer, of which he 
proposed to give a fuller account in a paper to be read 
before the Society at a future meeting. 
Mr. L. S. Burbank, Prof. W. H. Niles, the President, and 
others, remarked on some of the points referred to by Dr. 
Wadsworth. 
Dr. Thos. M. Brewer announced the gift of a specimen of 
the Shearwater, Rhyncops nigra, taken at Wood’s Holl, by 
Mr. J. F. Carleton, to whom the thanks of the Society were 
voted. 
A vote of thanks was also passed to Mrs. 8. B. Cragin for 
gifts to the Museum. 
