3l8 CLASSIFIED RESUME OF ORGANISMS OBSERVED 



organisms. On the last few dives I did not bother to report 

 them. 



I could never detect any illumination, although their 

 photophores are well developed, and at the lower levels the 

 fish were quite invisible outside the electric beam. 



Although we frequently take a hundred or more in a 

 single net, I am convinced that Cyclothones do not live in 

 schools; there is too great a uniformity of numbers in each 

 net drawn. From the bathysphere I usually saw only sev- 

 eral at a time; even on the rare occasions when we passed 

 through a group of thirty or forty, only two or three 

 individuals were in view at the same moment. 



The fish appeared uniformly whitish or grayish. The 

 majority of those seen at our diving levels were probably 

 Cyclothone signata and young Cyclothone ■microdon, as 

 mature specimens of the latter, dark species do not usually 

 occur in our nets above 3000 feet. No specimen has been 

 caught above 1200 feet. 



At 2400 feet I once recognized a pair of ten-inch 

 Gonostonta elongatiim. The coppery iridescence of their 

 sides shone out clearly, and the serial photophores, with 

 their characteristically large reflectors, were distinct. I 

 probably saw several more of these fish, confusing them 

 with Melanostomiatids, but my eye was too slow to make 

 out more than the merest outlines. 



In our trawling nets we have taken a score of specimens 

 of about this size, but all came from 3000 feet or lower. 



