374 Mr. II. J. Carter on the Nutritive and 



band ; a second, indistinct band from the discocellular spot to 

 the inner margin : secondaries with the inner black line close 

 to the discocellular spot and placed upon a brownish diffused 

 streak or band : abdomen with indications of brown spots in 

 pairs upon each segment. Wings below white, the markings 

 of the upper surface for the most part obsolete ; discocellular 

 spots black and prominent ; a marginal series of black dots 

 and a dentate-sinuate brown postmedian line ; primaries with 

 a brown subapical patch or belt enclosing a quadrate apical 

 white spot. Expanse of wings 2 inches 3 lines. 



[To be continued.] 



XLII. — On the Nutritive and Reproductive Processes of 

 Sponges. By H. J. Carter, F.R.S. &c* 



Conflicting statements have been made respecting the 

 nourishment of sponges, which need but a little explanation to 

 become reconcilable. 



The subject has only just now presented itself separately, 

 because it has hitherto been implied rather than stated that 

 the nourishment of sponges was derived from foreign bodies 

 observed in their interior. 



* Publications to which reference is made in the following Communication. 



1. 1826. Grant, R. "Observations on tbe Structure and Functions 



of the Sponge." (Concluded.) Edinburgh Nezv Philosophical 

 Journal, vol. ii. p. 121, pi. ii. 



2. 1848. Carter, H. J. " Notes on tbe Species, Structure, and 



Aniuiality of the Freshwater Sponges in the Tanks of Bombay." 

 Ann. 8f Mag. Nat. Hist. ser. 2, vol. i. p. 303. 



3. 1849. . " A Descriptive Account of the Freshwater Sponges in 



the Island of Bombay, with Observations on their Structure and 

 Development." lb. vol. iv. p. 81, pis. iii.-v. 



4. 18.54. . "Zoosperms in Spongilla." lb. vol. xiv. p. 334, pi. xi. 



5. 185(5. Liebkrkuhn, N. "Beitrage zur Entwicklungsgeschichte 



der Spongillen." Archiv fur Anat. Physiol, and wissenschaft- 

 liche Medicin, pp. 1, 399 & 496, Taf. xv. und xviii. 



6. 1857. Carter, H. J. " On tbe Ultimate Structure of Spongilla, 



and Additional Notes on the Infusoria." Journal Bombay 

 Asiatic Society, vol. v. p. 574, April 9th, reprinted in Ann. fy 

 Mag. Nat. Hist. ser. 2, vol. xx. p. 21, pi. i. 



7. 1857. Lieberkuhn, N. " Beitrage zur Anatomie der Spongien." 



Archiv fur Anat. Physiol, und ivissenschaftliche Medicin, p. 376, 

 Taf. xv. Juni {der Gesellschaft naturforschender Freunde mit- 

 getheilt in den Sitz. v. 6. Sept. u. 2. Dec. 1856). 



8. 1859. Carter, H. J. " On Fecundation in the Two Volvoces and 



their Specific Differences ; on Eudorina, Spongilla, Astasia, 

 Euglena, and Cryptoglena.''' Ann. fy Mag. Nat. Hist. ser. 3, 

 vol. iii. p. 1, pi. i. 



