652 DR. R. VON LENDENFELD ON THE SYSTEMATIC [Dec. 21, 
[1543.] Vosmaer, G. C. J. Aanteckeningen over Leucandra aspera. (Aus- 
zug.) Tijdschr. Nederl. Dierk. Vereen. vol. vy. p. 144 (1880). 
1544. . ine spongiologische Bibliographie. Zool. Anz. Bd. iii. p. 478 
(1880). 
1545. . Versuch einer spongiologischen Stenografie. Tijdschr. Nederl. 
Dierk. Vereen. vol. y. (1881). 
1546. Ueber die Fortpflanzungsverhiltnisse der Spongien. Biol, Cen- 
tralbl. Bd. i. p. 103 (1881-82). 
1547. . Report on the Sponges dredged up in the Arctic Sea by the 
‘Willem Barents’ in the years 1878 and 1879. Niederl. Arch. Zool, 
Suppl. i. 58 pp. (1881-82). 
1548. . Voorloopig berigt omtrent het onderzoek aan de nederl. werk- 
tafel in het Zool. Stat. te Napels. Nederl. Staatscourant. (1881.) 
1549. . Porifera. Bronn’s Klassen und Ordnungen des Thierreichs, Bd. ii. 
(1882-1886). 
1550. (Poléjaeff, N.) Ueber das Sperma und die Spermatogenese bei 
Sycandra raphanus, H. Biol. Centralbl. Bd. iii. pp. 180-181 (1883). 
1551 . Studies on Sponges. I. On Veline gracilis, MT. z. Stat. Neapel, 
Bd. iv. pp. 437-447 (1883). 
1552. ——. Referate itber v. Lendenfeld’s Aplysinide. Biol. Centralbl. 
Bd. iii. p. 695 (1883). 
1553. ——. Ueber Nassanow’s Clione. Biol. Centralbl. p. 768 (1883). 
1554. ——. Ueber Vejdovsky’s Siisswasserschwiamme. D. Litt. Zeit. p. 1776 
(1883). 
1555. Ueber seine und Poléjaeff’s Untersuchungen iiber Kalksehwimme. 
Biol. Centralbl. Ba. iv. pp. 341-244 (1884). 
[1556.] ——. On a new genus-of Sponges (Velinea), (Abstr.) J. R. Mier. Soc, 
ser. 2, vol. iv. p. 243 (1884). 
1557. Studies on Sponges, IT.-IV.—II. On the supposed difference 
between Leucandra crambessa, H., and aspera (O.8.), H. III. On 
Haeckel’s entogastrie Septa. IV. On the Relation between certain 
Monactinellidze and Ceraospongie. MT. z. Stat. Neap. Bd. v. pp. 483- 
493 (1884). 
1558. ——. Something about Scudder’s ‘Nomenclator Zoologicus,’ Zool. Anz. 
Bad. viii. pp. 216-218 (1885). 
1559. ——. The Sponges of the ‘Willem Barents’ Expedition of 1880 and 
1881. Bijdr. Dierk. vol. xii. (1885). 
[1560.] Sponges of the ‘ Willem Barents’ Expedition. (Abstr.) J. R. 
Mier, Soc. ser. 2, vol. v. p. 1013 (1885). 
[1561.] Studies on Sponges. (Abstr.) J. R. Mier, Soe. vol. v. p. 75 
(1885). 
1562. . Einige neuere Arbeiten iiber Schwamme. Refer. in Biol. 
Centralbl. Bd. vi. p. 181 (1886). 
1563. Hinige neuere Arbeiten iiber Schwamme. Biol. Centrailbl, Bad. vi. 
pp. 193-201 (1886). 
1564. Wallace, Samuel J. On the “Geodes” of the Keokuk Formation 
and the Genus Biopalla, with some new Species. Am, J. Sci. ser. 3, 
vol. xv. pp. 366-370 (1878). 
1565. Walcott, C.D. Cyathophycus. Trans, Albany Instit. vol. x. (1879). 
1566. -——. On the nature of Cyathophycus. Ann. M. N. H. ser. 5, vol. viii. 
p- 459 (1881). 
1567. ——. On the nature of Cyathophycus, Am. J. Sct, ser. 3, vol. xxii, 
pp. 894-395 (1881). 
