— l52 



44. Hanitsch (R.), Second Report on the Porifera of the L. M. B. C. District, Proc. Biol. 



Soc, vol. 3, p. i55. Liverpool 1889. 



45. Hanitsch (R.), Third Report on the Porifera of the L. M. B. C. District, Proc. Biol. 



Soc, vol. 4, p. 192. Liverpool 1890. 



46. Hansen (G. Arm.), Den Norske Nordhavs-Expedition iSjô-iSjS, Zoologi, XIII, 



Spongiadœ. Christiania i885. 



47. Higgin (T.), On two Hexactinellid Sponges from the Philippine Islands in the Liverpool 



Free Muséum, Ann. and Mag. of Nat. Hist. [IV], vol. i5, p. 377. London 1875. 



48. Higgin (T.), Description of some Sponges obtained during a cruise of the Steam-Yacht 



ARGO in the Caribbean and neighbouring seas, Ann. and Mag. of Nat. Hist. [IV], 

 vol. 19, p. 291. London 1877. 



49. Hope (Rob.), On two new British species of Sponges, ivith short notices..., Ann. and 



Mag. of Nat. Hist. [VI], vol. 4, p. 333. London 1890. 



50. Hyatt (A.), Révision of the North American Poriferœ; ivith remarks npon foreign 



species, Mem. Boston Soc. Nat. Hist., vol. 2, p. 399, 1875; p. 5o5, 1877. 



5i. Johnston (G.), History of British Sponges and Lithophytes, London 1842. 



52. Keller (C), Neue Cœlenteraten aus dem Golf von Neapel, Arch. f. mikroskop. Anat., 



vol. 18, p. 271. 1880. 



53. Keller (C.), Die Spongienfauna des rothen Meeres, I Halfte, Zeitsch. f. wissensch. 



Zool., vol. 48, p. 3 1 1, ii 



54. Kent (W. Saville), Notice on a neiv vitreous Sponge, Pheronema (Holtenia) Grayi, 



Ann. and Mag. of Nat. Hist. [IV], vol. 6, p. 182. London 1870. 



55. Kent (W. Saville), On two new siliceous Sponges taken in the late Dredging-Expe- 



dition of the Yacht NORNA of the coasts of Spain and Portugal, Ann. and Mag. of 

 Nat. Hist. [IV], vol. 6, p. 217. London 1870. 



56. Lendenfeld (R. von), Experimentelle Untersuchungen ilber die Physiologie der Spongien, 



Zeitsch. f. wissenschaftl. Zool., vol. 48, p. 406. iî 



57. Marenzeller (Em. von), Die Cœlenteraten, Echinodermen und W'ùrmer der K. K. 



Oesterreichisch-Ungarischen Nordpol-Expedition, Denkschr. Akad. Wien, vol. 35, 

 p. 35 7 . 1878. 



58. Marenzeller (Em. von), Poriferen, Antlw x oen, Ctenophoren und Wiïrmer von Jan 



Mayen, Die internation. Polarforschung 1 882-1 883. — Dieôsterreichische Polarstation 

 Jan Mayen, vol. 3. Wien 1886. 



59. Marenzeller (Em. von), Ueber die adriatischen Arten der Schmidt'schen Gattungen 



Stelletta und Ancorina, Annal, des K. K. naturhistor. Hofmuseums, vol. 4, n° 1, p. 7. 



60. Marshall (W.), Untersuchungen iiber Hexactinelliden, Zeitsch. f. wissenschaftl. Zool., 



vol. 25, Suppl., p. 142. 1875. 



