1911] Michael: CUaetognatha of the San Diego Region. 155 



only conclude, therefore, that the species is typically meso- 

 planktonic and that it is apparently most abundant in the region 

 of 300 fathoms. 



Distribution of 8. enflata 



This species was obtained in only four surface hauls, which 

 yielded a total of 6607 specimens. Of this number 6600 were 

 obtained in two hauls (411 and 412) made on February 25, 

 1905. Six of the remaining seven were obtained on April 26, 

 1905, and the other specimen on June 11, 1908. In addition to 

 the surface hauls, the open vertical net obtained 3520, but both 

 horizontal and vertical closing nets failed to obtain a single 

 specimen. This may be due to the fact that no specimens were 

 obtained since June 19, 1908, before which date very few closing 

 net hauls were made. All data regarding the species are con- 

 tained in the following table. 



TABLE 63 

 Data concerning the Distribution of S. enflata. 



