physonect forms were reported than calycophoran, and species of 

 Nanomia were common around 300 m. Siphonophores in general were 

 found throughout the water column, but deep red physonects were 

 only seen close to the bottom at about 900 m. Some Apolemia were 

 1-2 m in total length, but no very large siphonophores were seen. 

 Two unknown and possibly undescribed specimens were collected and 

 subsequently given to P. R. Pugh (Institute of Oceanographic 

 Sciences, U.K.) for examination. 



Ctenophores 



Ctenophores were fairly abundant and widely distributed. 

 Colorless cydippid species were seen through the whole depth, and 

 at least three deep red species, previously observed but still 

 undescribed, were seen only below 700 m (see also Larson et al . , 

 1988). Most of the cydippids seen had their tentacles extended 

 in fishing position. The lobate ctenophores Ocyropsis and 

 Eurhamphaea , common epipelagic forms, were seen all the way to 

 the bottom at 900 m. On dive 1428, large numbers of Eurhamphaea 

 vexilligera were swimming just above the bottom. A single 

 Deiopea kaloktenota and a few specimens of the mesopelagic 

 Bathocyroe fosteri were reported below 500 m, as well as larger 

 unidentified lobate ctenophores. Several specimens of 

 Thalassocalyce inconstans were seen or collected, always deeper 

 than 300 m. Although originally described from the epipelagic 

 (Madin and Harbison, 1978), this genus is probably mesopelagic. 

 Cestum veneris , the common epipelagic cestid, was seen 

 throughout the water column. 



Crustaceans 



Hyperiid amphipods and copepods were abundant on most dives, 

 occurring throughout the water column. During the day they were 

 attracted to the lights of the sub only below 300 m, but at night 

 would swarm around lights at the surface. This aggregation 

 accounts for high numbers in Table 2. The amphipods included 

 species of Themisto and Phrosina , with a few specimens of Scina 

 reported below 700 m. Many copepods and euphausiids were also 

 attracted to the lights, and swarms might be monotypic or mixed. 

 An unusual copepod, not yet identified, was seen at depths 

 greater than 500 m. Red-orange in color, it swam vertically, and 

 had a long strand trailing posteriorly from the telson. We were 

 unable to collect a specimen, but the strand appeared to be a 

 fecal string like those carried by some mysids (Youngbluth et 

 al., 1981). 



Euphausiids and sergestids showed distinct diel differences 

 in distribution, occurring much shallower at night. Euphausiids 

 included species of Stylocheiron and Euphausia , some of which 

 were carrying eggs. The shallower sergestids were colorless or 

 white, possibly juvenile stages; larger red and half-red 

 specimens were seen only below 700 m. Other shrimp noted 



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