DEVELOPMENT OF EUPHAUSIA SUPERBA 



Table XV. Analysis of larvae with seven terminal spines 

 on the telson from St. 639 



45 



The letters a-j in columns 5-7 afford reference to the nine larvae (Fig. 8), which were arranged according 

 to increasing development of their appendages. 



Note I. The 5th pleopods are non-setose. 



Table XVI gives the results of ex- 

 amination of sixty-one seven-spined 

 larvae from St. 374. In addition to 

 the degree of development as in the 

 two previous tables, the lengths of the 

 mandibular palp, ist thoracic append- 

 age, and inner antennular flagellum are 

 given both in millimetres and in the 

 units (24 units = i mm.) actually em- 

 ployed in measurement. 



The length frequency of all the 

 seven-spined larvae from St. 374 is 

 given in Table XVII, in which also is 

 shown the number of specimens which 

 will have seven and five spines in the . length classes 



,. __, , Fig. 9. Length frequency of seven-spined larvae from St. 



succeedmg stage. The results are \, ,wu • ji r> ■ a^ 



° o 374. ^, all the seven-spmed larvae, is, seven-spmed larvae 



shown graphically in Fig. 9. in which the telson form in the succeeding stage can be dis- 



The length frequency distributions tinguished. succeeding stage seven-spined. 



of the mandibular palp, ist thoracic succeeding stage five-spined. 



appendage and inner antennular flagellum, are stated below in Table XVIII and shown 



