CRI'STACKA MAI.ACOSTRACA. 



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thalmus. Scoloplithalmus stands near to Hans enomy sis and seems essentially only to differ from this in 

 that the stalk of the antennnles is considerably elongated and the carapace produced into a relatively 

 lartre rostrum. 



5. Boreomysis scyphops G. O. Sars. 



1879. Boreomysis scyphops G. O. Sars, Archiv f. Math, og Naturvid., B. IV, p. 429. 

 ! 1885. G O. Sars, Norske Nordh.-Exp., Crust. I, p. 56, PI. VI. 



Occurrence. The "Ingolf" has taken this species at 13 stations. 

 South of Jan Mayeu: St. 113: 69°3i'N. L., 7°o6'W. L., 1309 fin., temp. 



- 117: 69° 13' 8° 23' - 

 — - - 118: 68° 27' — 8° 20' — 



North of East Iceland: St. 125: 68° 08' — 16 02' — 



North-East of Iceland: - 112:67° 57' — 6° 44' 



— - - 119: 67° 53' — io°i9 r - 



— - — - 120: 67° 29' — n° 32' — 



— - in: 67° 14' — 8° 48' — 



- no: 66° 44' — n° 23' — 

 East of North Iceland: - 102: 66° 23' ■ — io° 26' — 



- - - 104: 66° 23' - 7° 25' - 



- 105: 65° 34' — 7 31' - 

 North of the Faeroes: - 140: 63° 29' — 6° 57' — 

 One specimen was taken by the "Thor" east of Iceland: 66° 19' N. L., 10° 45' W. L., 760 fm. 



Ohlin notes it from a place between East Greenland and Jan Mayen: 72° 42' N. L., 14° 49' W. L-, 1053 fm. - 

 It is easily seen that all the localities lie in the cold area north of the Faeroes to the east and north- 

 east of Iceland, also as far north as Jan Mayen and between this island and East Greenland; the 

 depth varied between ca. 760 to 1309 fm., the bottom-temperature between -=- o - 8° and -i- ri°. 



Distribution. G. O. Sars founded the species on some specimens taken in the waters N. W. 

 of Finmark: 71° 59' N. L., 11° 14' E. L., niofm., temp, -f- i'3°. Ohlin gives it from two places considerably 

 further north, namely, 77° 52' N. L., 3° 5' W. E, 1455 fm., temp, -f- 1-4° and 78° 19' N. L., 8° 41' E. E., 1430 fm., 

 temp. -4- 14°. In his work on the Schizopods of the "Challenger", Sars refers a number of specimens 

 taken at 3 stations in the southern Ocean to this species; the stations lie between 46° 16' and 53° 55' 

 S. L., the depth varied from 1600 to 1950 fm. and the bottom-temperature was over 0°. Being no be- 

 liever in bipolarity I have always supposed that the last-named specimens belong to a different species; 

 besides B. scyplwps is not known from any place between the Northern Ocean and the Antarctic Sea, 

 and the bottom-temperature is below zero at all arctic stations, above zero in the antarctic localities. 

 In June 1907 I went to London taking with me some specimens of my B. scyphops for comparison 

 with the antarctic specimens, and the result arrived at will be given presently. 



Remarks. The largest of my numerous specimens, a female with marsupium, is 60mm. from 

 the tip of the rostrum to the end of the telson. Sars gives 70 mm., but does not state how the 

 measurement was taken; the largest "Challenger" specimens from the Antarctic Sea is given by him 



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