ENTOMOSTRACA OF THE SCOTTISH NATIONAL ANTARCTIC EXPEDITION. 331 



Fam. 

 Genus Oncsea, Philippi, 1853. 



Oncsea venusta, Philippi. 

 1843, Oncxa venusta, Phil., Wiegmaris Arckiv fur Naturgetch. (1843), p. 62, pi. iii. fig. 3. 



This species was observed in gatherings from Stations 18, 25, 36, 49, 56, and 62, 

 19 59' N., 23 34' W., to 4 15' S. ; 33 38' W. 



Oncsea mediterranea, Glaus, var. 

 1863, Antaria mediterranea, Glaus, Die freilebenden Gopepoden, p. 159, Taf. 30. 



The only gatherings in which this form occurred were from three stations in the 

 South Atlantic, viz., 55, 64, and 93, 22' S., 31 00' W., to 30 5' S., 45 28' W. 



Oncsea conifera, Giesbrecht. 



1891, Onexa conifera, Giesb., Atti Acead. Lincei, Roma (4), vol. vii. p. 8. 



This species, which appeared to be of more frequent occurrence than the two just 

 referred to, was observed in gatherings from Stations 14, 18, 19, 26, 29, 32, and 33, 

 21 28' N., 22 40' W., to 9 40' N., 25 28' W., in the North Atlantic, and at Stations 

 56, 59, 62, and 90 in the South Atlantic, 42' S., 31 20' W., to 26 50' S., 42 20' W. 



Fam. 

 Genus Corycseus, Dana, 1845. 



Corycseus venustus, Dana. 

 1849, Corycxus venuttus, Dana, Proc. Amer. Acofl., Boston, vol. ii. p. 8. 



This Corycseus occurred sparingly in gatherings from three stations in the South 

 Atlantic, viz., 90, 93, and 95, 26 50' S., 42 20' W., to 32 15' S., 47 30' W. 



Corycseus ovalis, Glaus. 

 1863, Oonjcxus ovalis, Glaus, Die freilebenden Copepoden, p. 158. 



The only gathering in which this species was obtained was from Station 44, 

 3 42' N., 2<i 26' W. 



Corycasus obtusus, Dana. 

 1852, Corycxus obtusus, Dana, Crust. U.S. Kxpl. Exped., p. 1214, pi. Ixxxv. fig. 6. 



With the exception of Corycasus speciosus this appeared to be the most commonly 

 distributed member of the genus in the Scotia collection. It was observed in gather- 

 ings from about twenty-seven stations, ranging from Stations 13, 15, and 19, North 

 Atlantic, 21 58' N., 22 26' W., to 19 12' N., 24 08' W., to 85, 90, and 95, South 

 Atlantic, 23 8' S., 39 40' W., to 32 1 5' S., 47 30' W., but it was nowhere very plentiful. 



(ROT. soc. EDIN. TRANS., VOL. XLVIII., 577.) 



