MI 



IMIY1J M MOLIJ S( A 



801 



the eyes; and still nearer the vegetal pole a series of paired 

 elevations, the rudiments of the arms. 



cterv 



ar.t 



1/k.S 



yJz.s 



Via. 701.— Two later stages in the development of Loligo. A, from the funnel side. B, obliquely 

 from above. Letters as in preceding figures ; ne. cart, nuchal cartilage. (After Korsehelt and 

 Heider.) 



B 



-<f in 



poster 



cten. 



fk.S 



yks 



Fin. 702.— Two stages in the development of LoligO, later tlian tin >se represented in Fig. 701. 

 From the anal or funnel side. Letters as in preceding figure ; in addition, rin, fins. (After 

 Korsehelt and Heider.) 



After the complete enclosure of the yolk by the blastoderm, the 

 mouth (mo.) is developed as an oval depression between the nidi- 



