ENTOMOSTRACA OF THE SCOTTISH NATIONAL ANTARCTIC EXPEDITION. 577 
Fam, ONC&IDA. 
Genus Oncexa, Philippi, 1853. 
t |  Onewxa venusta, Philippi. 
1843, Oncea venusta, Phil., Wiegman’s Archiv fiir Naturgesch. (1843), p. 62, pl. iil. fig. 3. 
This species was observed in gatherings from Stations 18, 25, 36, 49, 56, and 62, 
Meo N.. 23° 34’ W., to 4° 15’ 8., 38° 38’ W. 
Oncxa mediterranea, Claus, var. 
1863, Antaria mediterranea, Claus, Die freilebenden Copepoden, 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, 0° 22’ S., 31° 00’ W., to 30° 5’S., 45° 28’ W. 
Oncxa conifera, Giesbrecht. 
1891, Onezxa conifera, Giesb., Atti Accad. Lincet, 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, 
91° 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, 0° 42’ 8., 31° 20’ W., to 26° 50’ S., 42° 20’ W. 
Fam. Corycaip@. 
Genus Coryceus, Dana, 1845. 
Coryceus venustus, Dana. 
1849, Coryceus venustus, Dana, Proc. Amer, Acad., Boston, vol. ii. p. 8. 
_ This Corycxus occurred sparingly in gatherings from three stations in the South 
Atlantic, pia 90; 93; and 95; 267 50282427 20’ W., to 32° 15’ S., 47° 30’ W. 
Coryceus ovalis, Claus. 
1863, Coryczus ovalis, Claus, Die freilebenden Copepoden, p. 158. 
The only gathering in which this species was obtained was from Station 44, 
3° an! N., 28° 26’ W. 
Coryczus obtusus, Dana. 
1852, Coryceus obtusus, Dana, Crust. U.S. Expl. Hxped., p. 1214, pl. lxxxv. fig. 6. 
With the exception of Corycxus 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 18, 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° 8’8., 39° 40’ W., to 32° 15’S., 47° 30’ W., but it was nowhere very plentiful. 
TRANS. ROY. SOC. EDIN., VOL. XLVIIL., PART IIT. (NO. 24). 85 
