142 



MR T. V. HODGSON ON THE 



In a recent paper on the Pycnogonids of the Magellan Straits (14) it became 

 necessary to define that area, and I suggested the division of the Antarctic and Sub- 

 Antarctic regions into three provinces corresponding with the continents from which the 

 attack on those regions can be made. The limits are as yet purely arbitrary, being 

 defined by lines of longitude which may not hold good when our zoological knowledge of 

 these regions becomes greater than at present. The division suggested was as follows : 



(1) Magellan Province, long. 20 W. to long. 130 W. 



(2) Australasian Province, long. 130 W. to long. 100 E. 



(3) Kerguelen Province (African), long. 100 E. to long. 20 W. 



The following list contains all the known species of Pycnogonida from the Antarctic 

 and Sub-Antarctic regions a list which contains some seventy-two species, thirty-four 

 of which belong, as far as at present known, exclusively to the Antarctic area. Thirty 

 of them belong to the Sub-Antarctic region, and of these, seven find their way farther 

 northward. Those marked with an asterisk are contained in the Scotia collection. 



Ant- 

 arctic. 



Pycnogonum magellanicum, Hoek 

 magnirostre, Mbbius 



Phoxichilus australis, Hodgson . 



Pallene dimorplia, Hoek 



Pseudopallene cornigera, Mbbius 

 ,, australis, Hodgson 



Pallenopsis patagonica, Hoek 

 pilosa, Hoek 

 ,, fluminensis, Krb'yer . 

 glabra, Mbbius 

 ,, villosa, Hodgson 

 hiemalis, Hodgson 



* lanata .... 

 Anoplodadylus neylectus, Hoek . 



,, petiolatus, Krb'yer 



Nymphon gracile, Leach 

 ,, gracilipes, Miers 

 brachyrliynchum, Hoek 

 ,, hamatum, Hoek . 

 ,, fuscum, Hoek 

 meridionals, Hoek 

 ,, antarcticum, Pfeffer . 

 hiemale, Hodgson 

 ,, lanare, Hodgson. 

 ,, adareanum, Hodgson . 

 frigidum, Hodgson 

 ,, tridentatum, Hodgson . 

 ,, longicoxa, Hoek . 

 ,, compactum, Hoek 



* articular e . . . . 



* Chxtonymphcn brevicaudatum, Miers . 



villosum, Hodgson 

 liarti/'ulatum, Hodgson 

 mendosum, Hodgson . 

 nustralf, Hodgson 

 var. austrin- 

 nrum, Hodg- 

 son 



Sub- 

 Ant- 

 arctic. 

 X 



* Clixtonymphun orcadenae . 



* assimile 



* Pentanymphon antarctic-urn, Hodgson . 

 Leionymphoii striattu/t, Mbbius . 



(jrande, Pfeffer 

 gibbosum, Mbbius . 

 minum, Hodgson . 

 Clausi, Pfeffer 

 australe, Hodgson . 

 (jiaciale, Hodgson . 

 spinosum, Hodgson 

 Ammothea Hoeki, Pfeffer . 



Wilsoni, Schimkewitsch 

 communis, Bouvier . 

 curculio, Bouvier 

 Tanyktylum styligerum, Miers 

 Dohrnii, Pfeffer 

 Ghierchix, Schimkewitsch . 

 longicaudatum, Hodgson . 

 Austrodecus glaciate, Hodgson . 

 Austroraptus polar in, Hodgson . 

 Ascorhynchus glaber, Hoek 

 Rhyncothorax australis, Hodgson 

 Colossendeis yigae, Hoek 



leptorliynchus, Hoek 

 ijigas leptorht/nchus, Hoek 

 meyalonyx, Hoek 

 rob/istd, Hoek . 

 gracilis, Hoek . 

 australis, Hodgson . 

 glacialis, Hodgson . 

 frigida, Hodgson 

 rugosa, Hodgson 

 magellanii-a, Hodgson 

 orcudensis 

 ' Decolopoda australis. Eights 



antaniii-a, Bouvier . 



Ant- 

 arctic. 



x 



X 



X 



Sub- 

 Ant- 

 arctic. 



(HOY. SOC. EDIN. TRANS., VOL. XLVI., 162.) 



