532 



THE ANATOMY OF INVERTEBRATED AXIMALS. 



by Kowalewsky, 1 Todaro, Brooks, 2 and Salensky. 3 The ob- 

 servations of the last-named author relate chiefly to Salpa 



Fig. 152.— Salpa democratica-mucronata. — I. Salpa democratica. II. Salpa mucro- 

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

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

 with attached Salpa mucronata buds. 



The letters have the same signification throughout : «, oral ; b, atrial orifices : c, 

 endostyle; d, ganglion ; e, liypopharyngeal band in a so-cailed " branchia ; "/» 

 languet ; g, heart ; h, gemmiparous stolon ; i, visceral mass or nucleus ; A\ mus- 

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

 ciliated sac ; ce, oaleoblast ; a, ectoderm and test ; j8, endoclerm. 



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

 pears to me to be the most satisfactory. 



1 " Naehrichten der Koniglichen Gesellschaft zu Gottingen," 1868. 



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

 8 Zeitschriftfiir wiss. Zooloffie, 1876. 



