R. W. H. ROW—REPORT ON THE SPONGES : NON-CALCAREA. a99 
(21) Miuurr, F.—“ Ueber Darwinella aurea, einen Schwamm mit sternformigen Horn- 
nadeln.” Bd.i. Arch. mikr, Anat. 1865. 
(22) PoLfjarnrr, N. px.—Report on the Scientific Results of the Voyage of H.MLS. 
‘Challenger.’ “ Keratosa.” Zoology, Vol. ii. London, 1884. 
(23) Kipiey, 8. O.—“Spongiida” in Report on the Zoological Collections made in the 
Indo-Pacific Ocean during the Voyage of H.M.S. ‘ Alert,’ 1881-82. London, 1884. 
(24) Ripiey, 8. O., and Denpy, A.— Preliminary Report on the Monaxonida collected 
by H.M.S. Challenger.” Ann. Mag. Nat. Hist. (Ser. V.) vol. xviii., 1886. 
(25) Scumipr, O.—Grundziige einer Spongien-Fauna des Atlantischen Gebietes. Leipzig, 
1870. : 
(26) —— Die Spongien des Adriatischen Meeres. Leipzig, 1862. 
(26 a) Scuuuze, I’. f.—“ Untersuchungen tiber den Bau u. die Entwicklung der Spongien, 
VII. Die Familie der Spongide.” Zeitschr. wiss. Zool. vol. xxxii., 1879. 
“TTexactinelliden des rothen Meeres. Zoologische Ergebnisse XVI.” Denks. 
_ mmath.-nat. Class. kaisl. Akad. Wiss. Wien, 1900. 
(28) -— “Untersuchungen tiber den Bau und die Hntwicklung der Spongien. IX. Die 
Plakiniden.” Zeits. f. wissensch. Zool. vol. xxxiv., 1880. 
(29) Sottas, W. J.—Report on the ‘Challenger’ Tetractinellida. 1883. 
(30) Torpsent, E.—* Introduction a Vétude monographique des Spongiaires de France. 
Classification des Hadromerina.” Arch. Zool. exp. et gén. (sér. 38) tome vi., 1898. 
“‘ Note sur quelques éponges du Golfe de Tajoura.” Bull. Soc. Zool. de France, 
tome xviil, 1895. 
(32) —— “ Eponges de la Mer Rouge.” Mém. Soc. Zool. de France, tome v., 1892. 
(27) 
(31) 
(33) “Spongiaires des Acores.” ‘ Résultats des Campagnes scientifiques du Prince de 
Monaco, fase. xxvy., 1904. 
(34) “Etude monographique des Spongiaives de France.” Arch. Zool. exp. et géu. 
(sér. 3) tome i1.; (sér. 3) tome ii1., 1894-1900. 
(35; “ponges recueillis par M. Ch. Gravier dans la Mer Rouge.” Bull. Mus. 
d’ Hist. Nat. tome xii. 1906. 
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supposed heteromorphic zooids.” Trans. Irish Acad. vol. xxvili., 1881. 
EXPLANATION OF THE PLATES. 
PLATE 35. 
Fig. Puratetillateccentrica. X 5. 
Chrotella ibis. X 2. 
Pilochrota parva. xX 4. 
Portion of the surface of Diastra sterrastv@d. X 7. 
ot ye oo 1) 
Portion of the under surface of Geodia micropunctata, showing oscula and 
Lamellibranch shell. x 4. 
PLatE 36. 
Fig. 6. Pilochrota parva, skeleton arrangement. X 20. 
7. Chrotella ibis, skeleton arrangement. X 20. 
8. Paratetilla eccentrica, skeleton arrangement. X 20. 
9. Coppatias albescens, portion of surface.  X 7. 
10. Halichondria bubastes. X 13. 
Ll. Aplysina pretensa, portion of specimen. X 13. 
LINN. JOURN.—ZOOLOGY, VOL. XXXI. all 
