1871.] MR. W. S. KENT ON A NEW GENUS OF SPONGES. 



615 



17. 



18. 

 19. 



20. 

 21. 

 22. 

 23. 

 24. 

 25. 

 26. 

 27. 

 28. 

 29. 

 30. 

 31. 

 32. 

 33. 

 34. 

 35. 

 36. 

 37. 

 38. 

 39. 



40. 

 41. 



42. 



43. 

 44. 



Xj/lobucco duchaillui (Cass.) . 

 Gymnobucco peli, Hartl. 

 Trachyphonus purpuratus, 



Verr. 

 Campethera nivosa (Sw.). 

 Alethe castanea, Cass. 

 Turdus crossleyi, Sharpe. 

 Criniger caluras, Cass. 



tricolor (Cass.). 



chloronotus, Cass. 



tephrolcemus (Gray). 



nivosus, Temm. 



Andropadus virens (Cass.). 

 Ixonotus guttatus, Verr. 

 Cossypha poensis, Strickl. 



Isabella, G. R. Gray. 



Pratincola salax, Verr. 

 Nectarinia superba (V.). 



fuliginosa (Shaw). 



angolensis (Less.). 



chloropygia, Jard. 



subcollaris, Reich. 



Anthreptes aurantia, Verr. 

 Speirops melanocephalus (G. 



R. Gray). 

 Bias musicus (V.). 

 Platysteira leucopygialis, 



Fras. 



cyanea (MiilL). 



Terpsiphone tricolor (Fras.). 

 melampyra, Verr. 



45. 

 46. 



47. 

 48. 

 49. 

 50. 

 51. 



52. 

 53. 

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56. 



57. 

 58. 

 59. 

 60. 

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62. 

 63. 



64. 



65. 

 66. 

 67. 

 68. 

 69. 



Psalidoprocne nitens (Cass.). 

 Dryoscopus leucorhynchus, 



Hartl. 

 Laniarius hypopyrrhus, Verr. 



multicolor, G. R. Gray. 



Nicator chloris (Val.). 

 Oriolus brachyrhynchus,S\v. 

 Lamprocolius purpureiceps, 



Verr. 

 Hyphantornis textor (Gm.). 



aurantia (V.). 



jiavigula, G. R. Gray. 



Malimbus nitens (J. E. 



Gray) . 



cristatus (V.). 



scutatus (Cass.). 



nigerrimus (V.). 



Nigrita luteifrons, Verr. 



bicolor, Hartl. 



Euplectes phanicomerus, G. 



R. Gray. 

 Ligurinus olivaceus (Fras.). 

 Strobilophaga burtoni, G. R. 



Gray. 

 Accipiter hartlaubi, Verr. 

 Syrnium nuchale, Sharpe. 

 Rallus oculeus (Temm.). 

 Ibis religiosa, Sav. 

 Podica senegalensis (V.). 

 Sterna fissipes (L.). 



11. On a new Genus of Sponges from North Australia. By 

 W. Saville Kent, F.Z.S., F.R.M.S., &c, of the Geolo- 

 gical Department, British Museum. 



[Eeseiyed June 19, 1871.] 



(Plate XLVIII.) 



I am indebted to Dr. J. E. Gray for permission to describe the 

 two remarkable Sponges figured in the accompanying plate. 



As they agree with one another in their histological and more 

 general fundamental structure, I have no hesitation in regarding 

 them as generically identical, though, in the absence of a published 

 account of any closely approximating form, it becomes requisite to 

 establish a new genus for their reception. 



