1140 A MONOGRAPH OF THE AUSTRALIAN SPONGES, 



The surface of the stomach and exhalent canals is consequently 

 perfectly smooth. The lateral rays enclose an angle of 160" and 

 are 03 mm.x 0024, the basal sagittal ray measures only 0-37 x 

 0-012, mm. 



Below the outer surface groups of spindle-shaped cells are met 

 with, which are mesodermal, and which I consider as sensitive, 

 in consequence of their great similarity to the sensitive cells of 

 Cnidaria. 



Locality : South Coast of Australia, Bass' Straits, AVendt. 

 East Coast of Australia, Port Jackson, Port Denison, von 

 Lendenfeld, 



7. FAMILIA TEICHONID.E. Polc^jaeff (1.) 

 Heterocoela, with the outer surface differentiated into two 

 different planes, one bearing pores the other oscula. This 

 family is identical with that established by Carter (2) under the 

 name Teichonellidae. I have not seen any representatives of this 

 family myself, but am of opinion that they might perhaps be 

 considered as colonies of Leucones or Sycones, as Marshall (3) 

 asserted, before Polejaeff's essay was published. 1 take occasion 

 here to draw the attention of the reader to the remark made by 

 Carter (4), who says, concerning the Teichonidoe, established as 

 a family by him, that " it is somewhat laughable that the self- 

 constituted author of the History of Creation should have 

 omitted a whole family of these Sponges " in his Monograph ; 

 knowing at the same time that the only Sponges which might be 

 considered as representatives of the new Family Teichonidse, 

 were never seen or described by Haeckel or any one else before 

 Carter, who accordingly made new species out of the existing 

 specimens six years after Haeckel's Monagraph had been 



(1.) N. PoUjaef. Report on the Calcarea. The Zoology of the Voyage 

 of H.M.S. Challenger. Part XXIV., p. 70. 



(2. ) H. T. Carter. On Teichania, a new Family of Calcareous Sponges, 

 with? descriptions of two species. Annals and Magazine of Natural 

 History, ser. 5. Vol. II., Nr. 7, p. 35. 



(3.) W. Marshall. Bericht liber die wissenschaftlichen Leistungen in der 

 Naturgeschichte der niedersten Thiere wiihrend der Jahre 1 876- 1879. Von 

 Dr. Rud. Lenckart. Zweite Hiilfte. Seite 714. 



(4.) H. T. Carter. L.c, p. 38 below. 



