92 Dr. Philippi on the animal of Galeommar 



said to be blind (Cfr. Rang, ^ Manuel de Malacologic/ p. 141.). 

 Does it belong to Eschholtz^s genus Acmcea ? or must it form 

 a distinct one, as M. Scacchi thinks, who calls it Clypeus in 

 his ^ Catalogus/ p. 1 7^ without however saying more of the 

 animal than " incola ut in Siphonaria, sed testa non canalicu- 

 lata ?" I will add in conclusion, that the following statement 

 of Rang, 1. c. p. 142. ^^ nous avons vu de jeunes Patelles avoir 

 le caracthre des Siphonaires et en conserver des traces dans im 

 dge plm avance,'' probably relates to species of this genus, and 

 not to young PatelliS, 



Plate III. Fig. 3. Pileopsis Garnotij Payr, 



a. The animal after the removal of the shell, magnified four tirae&. 

 The horse-shoe-form ligamentary muscle, the liver, the ova- 

 rium, the end of the intestinal canal, and in front the respiratory 

 cavity with the branchiae. 

 I. The animal with the shell, magnified three times, to show tlie 

 form of the head and the eyes. 



3. On the Animal of Galeomma, Plate III. fig. 4. 



This very remarkable Acephalous genus was established by 

 Turton in 1825 in the ^ Zoological Journal,' and thus charac- 

 terized from the shell : shell bivalve, equivalve, equilateral, 

 transverse ; with a large oval gape at the front margin. Hinge 

 -without teeth. Ligament internal. Two very small distant 

 muscular impressions ; impression of the mantle simple. So 

 also Deshayes in Lamarck's ^ Hist. Nat. d. Anim. sans Ver- 

 tebres,' (2nd edit. vi. p. 179.) Animal unknown. M. Costa 

 also found the shell and has described it somewhere in the 

 * Annales des Sciences Naturelles,* (in the absence of M. Costa 

 I cannot state more accurately where, as the entire series of 

 this Journal does not exist in Naples) under the curious name 

 of Hiatella Poliana, which escaped M. Deshayes. M. Delle 

 Chiaje has thought to correct his countryman by naming the 

 questionable animal Hiatella striata in the tables to the 5th 

 volume of his ^ Memorie,' which will never see the light. M. 

 Scacchi has described the animal very accurately, carefully, and 

 well under the name of Parthenope formosa in his ^ Observa- 

 zioni Zoologiche,' p. 8 and p. 19. I have also been so fortu- 

 nate as to observe for some days several living specimens. It 

 occurs between the roots of Zostera or Cavolinia oceanica, but 



