SPONGILLA. 169 



"On the 7th of February, 1874, I received by post 

 from Dr. Battersby five small sponges which he had 

 procured from the Lake of Killarney. Of these three 

 were young Spongilla lacustris, and two were very 

 small and young specimens of Spongilla Parfitti. The 

 largest was a thin, nearly circular patch, not quite 

 five lines in diameter. The smallest was a similar 

 patch, but not more than two lines in diameter. In 

 both the incipiently spinous skeleton spicula were 

 abundantly present. This is the second habitat 

 known of this sponge, and from two out of the five 

 specimens sent being of that species we may expect 

 hereafter to find it not uncommon in the Lake of 

 Kiilarney. 



" On the 30th of April, 1875, I received some frag- 

 ments of Spongilla Parfitti. from Dr. Battersby from 

 Caragh Lake,* Ireland. Gemmules, or rather ovaria r 

 in different states of development, were numerous in 

 them." 



3. SPONGILLA SCEPTRIFERA, Boiv., in, 300, PI. LXXXVI,. 

 figs. 1517. 



4. SPONGILLA LACUSTBIS (Don.), n, 342; i, PI. IV, fig. 

 90; PL IX, fig. 203; PI. XXII, fig. 320; in, 

 PI. LX. 



Habitat. I found this sponge in 1875 in the neigh- 



* Lough Caragli, Co. Kerry, is famous in the eyes of naturalists as- 

 the habitat of the remarkable slug Geomalacus macvlatus, Allman, 

 which lives rather high up upon the rocks of the mountain over- 

 hanging the lake. I had the pleasure of procuring it there in 1870. 

 It is not rare in this its only known locality (N.). 



