Chap. YII. DEVELOPMENT OF SQUILLA. 



67 



Fig. 34. 



exclusion, the youngest larva must stand on the same 

 level as the youngest larva of 

 Eu^hausia observed by Claus. 

 Of the two larval forms at 

 present known which are with 

 certainty to be ascribed, if not 

 to Squilla, at least to a Stonia- 

 pod, I pass over the younger 

 one ^^ as its limbs cannot 

 be positively interpreted, and 

 will only mention that in it 

 the last three abdominal segments are still destitute 

 of appendages. 

 The older larva 

 (fig. 35), which 

 resembles the 

 mature Squilla 

 especially in the 

 structure of the 

 great raptorial 

 feet and of the 

 preceding pair, 

 still wants the six 

 pairs of feet fol- 

 lowing the rapto- 

 rial feet. The cor- 

 responding body- 

 segments are already well developed, an unpaired eye 



2° Fig. 34. Embryo of a Squilla, magn. 45 diam. a. heart. 



21 'Archiv für Naturgeschichte,' 1S63. Taf. 1. 



22 Fig. 35. Older larva (Zoea) of a Stomapod, magn. 15 diam» 



r 2 



Fig 35. 



