532 



THE ANATOMY OF INVERTEBRATED ANIMALS. 



by Kowalewsky/ Todaro, Brooks,^ and Salensky/ The ob- 

 servations of the last-named author relate chiefly to Sal2')a 



Pis. '[^I.—Salpa democraticamiicronata.—l. Salpa democratica. II. Salpa mucro- 

 nata. III. A foetal Saliya democratica attached by its placenta to the wall of the 

 atrial cavity of a Salpa mucronata. IV. Part of the stolon of Salpa democratica 

 witli attached Salpa mucronata buds. 



The letters have the same signification throughout : a, oral ; ft, atrial orifices : c, 

 endosiyle; rf, ganglion ; e, hypopharyngeal band in a so-cailed " brancliia ; " /> 

 lanuuet ; g, heart ; h, gemmiparons stolon ; i, visceral mass or nucleus ; k, mus- 

 cular bands ; m, placenta ; n, blood-sinus ; g-, ovisac and ovum ; t, stomach ; w, 

 ciliated sac ; a, oeleoblast ; a, ectoderm and test ; /3, endoderm. 



democratica-ynucronata, and his account of the process ap- 

 pears to me to be the most satisfactory. 



1 " Nachrichten der Konigliclien Gesellsehaft zu Gottinffen," 1868. 



2 "Bulletin of the Museum of Comparative Zoology," No. 14. 

 8 Zeitschriftfur wiss. Zoologie, 1876. 



