98 SOLENOCONCHA. 



Further ontogenetic processes especially connected with the development of 

 the inner organs, are described by Lacaze-Duthiers, but these processes, which 

 are evidently very difficult to make out, could, at the time when he wrote, 

 only be studied in the complete animal, and could not thus be clearly under- 

 stood. The above account, in which the most essential ontogenetic phenomena 

 are described, must here suffice, and for further information we must refer the 

 reader to the original treatise on the subject (No. 2). 



LITERATURE. 



1. Kowalevsky, A. Etude sur l'embryogenie du Dentale. Ann. 



Musee Hist. Nat. Marseille Zool. Tom. i. 1883. 



2. Lacaze-Duthiers, H. de. Histoire de l'organisation et du 



developpement du Dentale. Ann. Sri. Xat. (4.) Tom. vi. 

 and vii. 1856 and 1857. 



3. Plate, L. Ueber den Ban und die Verwandtschaftsbeziehungen 



der Solenoconchen. ZooJ. Jahrb. Al.tli. f. Anat. Bd. v. 

 1892. 



APPENDIX TO LITERATURE ON SOLENOCONCHA 



{SCAl'HOPODA). 



I. Simroth, H. In Bronn's Klass. u. Ord. d. Thierreichs. 1894-95. 

 Anatomy, Ontogeny, Phylogeny and Literature. 



