78 Conservation Department 



of small fishes. We adopted a special form of description and 

 card-cataloged all species in this way. Thus such additional data 

 were recorded as the myomere count and chromatophore marking 

 previous to the appearance of scales which is invaluable for work 

 on the earlier developmental stages. 



The most satisfactory way to identify a young fish with the 

 adult is, of course, to secure a ripe female and male, artificially 

 fertilize the eggs, and study the resultant developmental stages 

 in the laboratory. Splendid cooperation was met with from other 

 fisheries' workers who kindly offered all available hatchery 

 material and promised more complete series next season. 



Summary of Results. — The Shearwater and Navette plankton 

 net and young fish trawls yielded 1049 specimens, representing 

 18 species. Supplementary collections from hatcheries, streams, 

 and along shore numbered about 49 more, making a total of at 

 least 67 species for which descriptions of young forms have been 

 made. Records of distribution and descriptions of developmental 

 stages of 25 species, most of them illustrated by camera lucida 

 drawings, are ready for publication, but the limited space of the 

 present report allows the inclusion of only a few of the more 

 commercially important. A trail has been blazed and further 

 work on the lake, especially if it can be started early in the 

 spring, will doubtless fill some of the gaps in the life histories of 

 partially known species and add data on those at present 

 unknown. 



