296 THE SCHIZOPODA. 
imperfect, but some points may be mentioned. No species is a surface form to 
any degree comparable with Siriella thompsonii M. Edw. or S. gracilis Dana 
(comp. the statements on p. 193 and p. 194). The great majority of the species 
were taken only in ‘300 fms. to surface,’’ but the material in the Copenhagen 
Museum proves that three such species, viz. Thysanopoda tricuspidata M. Edw., 
T. aequalis H. J. H., and Huphausia pseudogibba Ortm. have not infrequently 
been taken at the surface. The lists of Stations from the Agassiz Expedition 
together with the Copenhagen material shows that Huphausia tenera H. J. H., 
E. lamelligera H. J. H., the members of the krohnii-group, viz. Huphausia 
eximia H. J. H., E. diomedeae Ortm., FE. mutica H. J. H., EF. brevis H. J. H., (and 
E. recurva H. J. H.), and Stylocheiron carinatum G. O. 8., were frequently taken 
at the surface. The Agassiz Stations show that full-grown specimens of Nema- 
toscelis gracilis H. J. H. were never taken at the surface and generally in “300 
fms. to surface,” but that immature or generally even small specimens were 
taken at the surface at a few Stations. With the above-named exceptions the 
species of the genera Thysanopoda, Nematoscelis, Nematobrachion, and Sty- 
locheiron have very rarely or never been taken at the surface. Specimens of 
Bentheuphausia amblyops G. O. 8. have been captured at seven Stations in 
‘300 fms. to surface,’”’ but all specimens with a single exception seem to be im- 
mature, and judging from the Monaco material the adults live generally in 
greater depths. Finally the adults of the two gigantic species Thysanopoda 
cornuta Illig. and T. egregia probably live always in great depths, and adult 
males of 7’. monacantha Ortm. are probably unknown; though Dr. Agassiz 
secured specimens of the last-named species at eighteen Stations in “300 fms. 
to surface” the males at hand seem to be immature. 
It may still be mentioned that specimens of two species, Huphausia dis- 
tinguenda H. J. H. and Nematoscelis gracilis H. J. H., were found in the bottom 
of the Tanner net from 300 fms. Of the first-named species both adult and 
especially immature or small specimens were also taken at the surface, while of 
N. gracilis only young specimens were taken a few times at the surface, numerous 
adult specimens from many Stations generally in ‘300 fms. to surface.” 
Pseudeuphausia latifrons G. O. S., which was taken at the Fiji Islands but 
not in 1904-5, may be mentioned separately. According to our knowledge, 
especially from the ‘‘Siboga,”’ this species seems to live rather near the coasts, 
frequently in shallow water, and has, for instance, been captured at a number 
of anchorages. 
