ttlGLEY and BLRNS : DISTRIBUTION AND BIOLOGY OF MYSIDS 



Figure 9. — Geographic distribution of Amblyops abbre- 

 viata based on specimens in the collection at the NMFS 

 Biological Laboratory, Woods Hole. 



between Hudson Canyon and Hydrographer 

 Canyon — in the same area where they were 

 found to be most common by the Fis:h Hawk 

 and Albatross (Figure 10; Burns and Wigley, 

 Table 11) . The depth range of their occurrence 

 is 220 to 366 m. Because two samples were col- 

 lected with the bottom skimmer, it is certain 

 these specimens were present on the sea bottom 

 at the time of capture. Their presence on the 

 bottom during hours of low light level, 1600 to 

 2200 hr, suggests they may not undertake a 

 diurnal vertical migration. Five specimens are 

 adults, 13.0 to 16.2 mm long, and thi-ee specimens 

 are immature, 4.0 to 6.0 mm long. We have no 

 information on spawning other than the pre- 

 sence of 4- to 6-mm specimens in June, from 

 which a spring spawning may be inferred. Bot- 

 tom sediments at the collecting sites are fine- 

 grained types: sand, silt, and silt-clay. 



Tribe LEPTOMYSINI 

 Bathymysis renoctilata Tattersall, 



1951 



This large-eyed species of Bathymysis, which 

 occurs only in the western Atlantic Ocean, has 

 been reported from southern New England to 

 the southern tip of Florida (Tattersall, 1951). 

 The principal area of occurrence is along the 

 outer continental shelf and upper slope between 

 Hudson Canyon and Hydrographer Canyon 

 (southeast of Nantucket, Mass.). The bathy- 

 metric range reported for this species is 220 to 

 483 m. These records are based on collections 

 made b.v the research vessels Fish Hawk and 

 Albatross during the latter part of the last 

 century. 



The NMFS collection contains eight specimens 

 from three stations off southern New Eng-land 



Figure 10. — Geographic distribution of Bathymysis re- 

 nocalata based on specimens in the collection at the 

 NMFS Biological Laboratory, Woods Hole. 



>^ 



9 



Bathymysis renoculata 



729 



