Locality ofCarpenteria balaniformls. 211 



J. E. Gray, may be on Porites^ Gardita, or Fecten (Proc. Zool. 

 See. 1858, pt. xxvi. p. 266). 



How far the specimen labelled " Dujardinia " above men- 

 tioned, on MytiUcardia variegata " from the Mediterranean," 

 may be entitled to the generic distinction given to it by Dr. 

 Gray {op. etloc. cit.), when it appears to me to differ only from 

 P. halaniforme in the irregularity and obliquity of the reticu- 

 lation on its surface, is a question which is thus answered. 

 At the same time, while it appears to me to be only a variety 

 of P. halaniforme^ and I have stated that in all probability the 

 latter is not to be found in the Mediterranean, even if MytiU- 

 cardia variegata exists there, the fact of the two having come 

 from the Mediterranean is doubly doubtful. 



(When desirous of obtaining the localities of the various 

 specimens of sponges in the British Museum, the late Dr. Gray 

 said to me, "You cannot depend for this on the statement in the 

 'Register;' for in many instances they have been purchased 

 from * dealers ' or at sales." Certainly it is a great thing to 

 know what does exist in the world ; but the next wish is to 

 know where it comes from, which hitherto has been too much 

 neglected.) 



After the foregoing observations on Polytrema halaniforme 

 = Carpenteria halaniformis had been written, my kind friend, 

 Mr. W. Vicary, of Exeter, lent me for examination a large 

 globular specimen of Tuhiyora musica about as big as a man's 

 head, said to have originally come from Australia, in and about 

 which I found specimens of several species of Foraminifera, one 

 of which, growing on the Tuhipora itself, was so like Polytrema 

 halaniforme that it was impossible to view it otherwise than as 

 a species of this genus. Having resolved to describe and illus- 

 trate this species, it became necessary to name it ; and in so 

 doing the attempt to substitute '"'' Polytrema'''' for " Carpentering'' 

 made in my paper on the Polytremata, in the Ann. & Mag. 

 Nat. Hist, of 1876 (vol. xvii. p. 201), for the reasons therein 

 mentioned, proved to be attended by so many difficulties that 

 I determined to revert to the old name of " Carpenteria'''' given 

 to this Foraminifer by the late Dr. J. E. Gray (Proc. Zool. Soc. 

 I. c), still retaining it in the family of Polytremata, and, thus 

 abandoning that oi^^ Polytrema halaniforme'''' for '"'' Carpenteria 

 halaniformis J ^ to make the new Foraminifer a species of this 

 genus under the name of Carpenteria monticularisj which will 

 now be described. 



Carpenteria monticulariSj n. sp. (Plate XIII. figs. 9-12.) 

 Monticular, with furrowed sides, jagged circumference and 

 aperturalapex; sessile. Composition calcareous, homogeneous 



