1887.] NATURAL SCIENCES OF PHILADELPHIA. 197 



(10) Spongilla botryoides, W. A. Haswell. Proc. Linn. Soc. N. S. AVales, 1882, 

 p. 209. 



"Sponge yellow, encrusting; skeleton spicules curved, fusiform, 

 sparsely microspined ; statoblast spicules short, strongly curved, 

 with heads composed of numerous short, blunt or subacute spines. 

 Shaft free from spines." Haswell. 



Loc. Pond near Brisbane, Australia. 



(11) Spongilla sceptrioides, W. A. Haswell. Proc. Linn. Soc. N. S. Wales, 1882, 

 p. 209. 



"Skeleton spicules microspined ; statoblast spicules cylindrical, 

 spined, particularly near the head." 

 Loc. Pond near Brisbane, Australia. 



(12) Spongilla cinerea, Carter. Ann. and. Mag. 1881, p. 107. 



"Flat, spreading ; surface slightly convex, presenting gentle emi- 

 nences and depressions. Color cinereous ; texture compact, fine, 

 friable. Skeleton spicule curved, fusiform, gradually sharp-pointed, 

 minutely spined. Statoblast globular ; aperture infundibular ; 

 rust thick, white, composed of microcell substance, charged with 

 minute acerate spicules which are curved, cylindrical, aljruptly 

 sharp-pointed, and coarsely spined tliroughout ; arranged more or 

 less tangentially, intercrossing." Carter. 



Loc. Bombay. 



(13) Spongilla fragilis, Leidy. (PI. V, fig. ii; PI. VIII, figs, i, ii, iii, iv.) Proc. 

 Acad. Nat. Sci. Phila. 1851, p. 278. 



Syn. European, See Vejdovsky, "Diagno.is." ]}. 176. 

 Syn. American. 



1863 S. lordii, Bowerbank, 

 1875 S. ottaivaensis, Dawson. 

 1880 S. morgiana, Potts. 



8. calumeti, B. W. Thomas. 

 1880 S. fragilis, var. minuta, Potts. 

 1880 *S'. fragilis, var. minutissima, Potts. 

 S. fragilis, var. irregularis, Potts. 

 S. segregata. Potts. 



Sponge "discoidal, lichenoid, growing in patches flat, oval or cir- 

 cular, lobate at margin, translucent, yellowish white or cream col- 

 ored. Areolae distinct, subcircular. Reproductive bodies arranged 

 in a single close layer at the base of the attachment of the sponge ; 

 shining whitish yellow, elevated into a central papilla upon the up- 

 per surface. 



