220 WORKS AND PAPERS ON SPONGES. 



(J.). On Steere's Sponge, a new genus of the Hexacti- 



nellid group of the Spongida, Trans. Lin. Soc., ser. ii, vol. i, 



1877, p. 219, pis. xxxvi and xxxvii. 

 SCHUFFNEB (Oscar). Beschreibung einiger neuer Kalkschwamme, 



Jenaische Zeits. fur Med. u. Naturwiss., xi, p. 403, 1877, 



pis. xxiv xxvi. 

 HYATT (A.). Eevision of the North American Porifer, with 



remarks upon foreign species, pt. ii, Mem. Boston Soc., ii, 



p. 481, pis. xvi and xvii, 1877. 

 -- On the Embryology of Sponges, Proc. Boston Soc., vol. xix, 



1877, p. 12. 

 -- Guides for Science Teaching, No. 3, Commercial and other 



Sponges, 1880. 

 DYBOWSKI (W. M.). Ueber die Spongillen der Ostseeprovinzen, 



Sitzungsbe. der Dorpater Naturf. Gesell., 104te Sitzung, an 



Nov. 17, 1877, Beitriige zur bait. "Wochenschrift, 1878, No. 4, 



26 Jan., pp. 1012. 

 -- Mittheilungen iiber Spongien (Spongilla, &c.), i, ii, Zoolog. 



Anzeiger., i, 1878, pp. 30 and 53. 

 -- Studien iiber die Spongien des Eussischen Eeiches, mit beson- 



derer Beriichsichtigung der Spoiigien-fauna des Baikal-Sees, 



Mem. Acad. Imp. Sci., St. Petersbourg, ser. 7, xxvii, 1880, 



No. G. 

 -- Ueber LubomirsTcia laicalensis u. ab. d. Verbreit. d. Baikal- 



schwiimme iin Allgein., 1881. 

 SOLLAS (~W. J.). On the changes produced in the Siliceous 



Skeletons of certain Sponges by the action of Caustic Potash, 



Ann. Nat. Hist., ser. 4, vol. xx, 1877, p. 285, pi. ix. 

 -- On two new and remarkable species of Cliona, Ann. Nat. 



Hist., ser. 5, i, 1878, p. 54, pis. i, ii. 

 -- On Plectronella papillosa, a new genus and species of Echino- 



nematous Sponge, Ann. Nat. Hist., ser. 5, iii, 1879, p. 17, 



pis. iv vii. 



- On Pharetronema zingeleris, a new genus and species of 

 Eenierid Sponge, Ann. Nat. Hist., ser. 5, iii, 1879, p. 404, 

 pi. xxx. 



-- On Plocamia plena, a new species of Echinonematous Sponge, 

 Ann. Nat. Hist., ser. 5, iv, 1879, p. 44, pis. vi, vii. 



- The Sponge-Fauna of Norway, a report on the Eev. A. M. 

 Norman's collection of Sponges from the Norwegian Coast, 



