I Y AR TRÄGÅRDH, 
(Schwed. Südpolar-Exp . 
7. Moss-Island in Orléans Strait (Gerlache Channel), ist Dec., 1902. 
8. Mont Bransfield in the northern part of Graham Land, in moss. 7th. Dec., 1902. 
9. » > » » » » » » » under stones. » » » 
Subantarctic region. 
10. Falkland Islands, Port Louis. 25th. July, 1902. 
11. » » Speed-well cove. 15th. March, 1902. 
12. » » East of Port Stanley, under stones. 25th. Febr., 1902. 
13. » » Port Darwin. 3rd. March, 1902. 
14. Tierra del Fuego. Observatory Island, near Staaten Island. 6th. Jan., 1902. 
15. » » » Gable Island in the Beagle Channel, under stones on the 
shore. 29th. Oct., 1902. 
16. South-Georgia. Antarctic Bay, under stones in a pool. 5th. March, 1902. 
17. » Cumberland Bay. Bon’s valley, on the rocks. 2nd May, 1902. 
Heterogamasus nov. gen. 
Dorsal side covered by two shields, shaped like those of the genus Zercon. 
Texture of shields and legs coarsely granulated. Mandibles with free, straight, 
needle-shaped calcar. 
Legs I long, shaped like those of the genus Epicrius , with two large bristles 
each on the ventral side of femur, genu, tibia and tarsus. 
Legs II thick, with calcar femoralis and processus genualis. a 71 Sternal shield fused 
with ventri-anal shield. 
I. Heterogamasus claviger nov. spec. 
(PL I, figs. I — 3, 6 & 8, text-figs. 1, 2.) 
Male. Length, o, 54 mm. Breadth, o, 3 s mm. 
Shape , pyriform, subtriangular, the greatest width far backward, a little behind 
coxæ IV ; the sides convex, between coxæ II and III falling off towards the narrow 
squared top; the hind margin rounded, in the middle slightly square. 
Colour , light yellow. Texture , roughly granulated. 
The dorsal side (PI. I, fig. 8) covered by two shields, which are of the shape 
typical in the genus Zercon. The shields leave unprotected a narrow band along 
