"220 WORKS AND PAPEES ON SPONGES, 



MuEiE (J.). On Steele's Sponge, a new genus of the Sexacti- 



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



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

 ScHrrFiTEE (Oscar). Beschreibung einiger neuer Kalkschwamme, 



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



pis. xxiv — xxvi. 

 Hyatt (A.). Eevision of the North American Poriferse, with 



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



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

 On the Embryology of Sponges, Proe. Boston Soc, vol. xix, 



1877, p. 12. 

 Q-uides for Science Teaching, No. 3, Commercial and other 



Sponges, 1880. 

 Dybowski ("W. M.). Feber die Spongillen der Ostseeprovinzen, 



Sitzungsbe. der Dorpater Naturf. GreseU., lO^te Sitzung, an 



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



26 Jan., pp. 10—12. 

 MittheiluDgen iiber Spongien {Spongilla, &c.), i, ii, Zoolog. 



Anzeiger., i, 1878, pp. 30 and 58. 

 Studien iiber die Spongien des Eussischen Eeiches, mit beaon- 



derer Beriichsichtigung der Spongien-fauna des Baikal-Sees, 



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



No. 6. 

 TFeber Lubomirskia haicdiensis u. ab. d. Verbreit. d. Baikal- 



schwamme im Allgem., 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 zingeberis, 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-Pauna of Norway, a report on the Eev. A. M. 



Norman's collection of Sponges from the Norwegian Coast, 



