Dr. J. E. Gray on Carpenteria and Dujardinia. 383 



sitical ; but I am inclined to believe that this organism is the con- 

 necting link which I have long thought must exist between Sponges 

 and Foraminifera, and that it is in fact a Sponge whose integuments 

 have been consolidated into a Foraminiferous-like shell. You will 

 find that the interior is not one single undivided cavity, but that it 

 is loculated ; and sections of the shell show a sort of areolation cor- 

 responding with the little bosses of the exterior. 



*' I do not think that you will satisfactorily elucidate the organiza- 

 tion of this creature, unless you have several sections made in dif- 

 ferent directions through the shell. I have limited myself to the 

 one which you gave me the liberty to break up, with which I have 

 done the best I could. I should like to have these (two) slides back 

 again, and to have one or two perfect specimens, if you could spare 

 me a corner of your block. 



" Yours very truly, 



"William Carpenter." 



This account exactly agrees with my previous examination, as it 

 was the knowledge that the shell was multilocular and minutely 

 foraminated like the multilocular Foraminifera, which induced me 

 to regard it as the case of a Rhizopod ; and the knowledge that the 

 cells were filled with a fleshy substance strengthened with spicula 

 like certain sponges, induced me to believe that they were also 

 allied to the Porifera or Sponges ; and in my note to Dr. Carpenter 

 transmitted with the specimen on the 21st of April, 18.58, I stated 

 that " I regarded it as a Rhizopod of a new form ; it is formed of a 

 number of cells each ending in a terminal pore. The cells look like 

 the valves of a Barnacle, and that is the reason that Mr. Cuming 

 and my German friend think it is one ; but the examination of the 

 structure at once proves that it cannot be one." 



Being strengthened by the opinion of Professor Busk and Dr. Car- 

 penter, I have ventured to bring the subject before the Society ; and 

 I propose to form for the Philippine specimens a genus which I shall 

 name Carpenteria, after Dr. William Carpenter, who has paid so 

 much attention and has been so successful in elucidating the struc- 

 ture and organization of these animals. 



I shall merely give a slight description of the genus, sufiicient to 

 distinguish it from other marine bodies, and send some of my speci- 

 mens to Dr. Carpenter, in the hope that it will enable him to add a 

 full account of its formation and structure to his paper on the Fora- 

 miniferous Shells which he is preparing for the Transactions of the 

 Royal Society, assisted by the funds of that body. 



1. Carpenteria. 



Shell conical, attached by the broad base, formed of a series of 

 elongated cells, each ending in a contracted mouth, piled one against 

 another in a spiral manner, and with the aperture of the last cell 

 at the apex in the centre of the acute cone. The substance of the 

 cells is formed of a network of calcareous anastomosing ribs ; the 



26* 



