IL 



Fortegnelse over samtlige under Ex- 



peditionen observerede Arter, med 



Bemærkninger over Forekomst og 



Udbredninff. 



Ordo i. 



ZPod-oph-th-alma-ta.. 



Subordo 1. 

 Brachyura. 



Trib. 1. Cyclometopa. 



Fam. 1. Portunidæ. 



I. Thranites velox, Bovallius. 



Øffversigt Vet. Akad. Fnrh. 1K7<> No. 0. 



Et desværre i hoi Grad mutileret Exemplar af denne 

 forst af Bovallius beskrevne Form toges under Expeditio- 

 nens Iste Togt ved det ydre Afhæld af Storeggen (Stat. 

 24) paa 90 F. D. 



Bovallius har for denne Form opstillet en ny Slægt, 

 som dog kun synes mig lidet at skille sig fra Sl. Poriunus. 

 Af de bekjendte Arter af denne sidste Slægt synes den at 

 komme nærmest P. Jongipes Roux, der ligeledes har den 

 bagerste Sidetand paa Rygskjoldet usædvanlig stærkt for- 

 henget. 



Det erholdte Exemplar var ligesom det af Bovallius 

 ;revne en Han og stemmede i alt væsentligt overens 



Den norske Nordhavsexpedition. G. O. Sårs: Crustacea. 



IL 



List of Species observed on the Ex- 



pedition, xvitli remarks on occurrence 



and distribntion. 



Ordo i. 



IPo d.oph.th.a.lma.ia.- 



Subordo 1. 

 Brachyura. 



Trib. 1. Cyclometopa. 



Fam. 1. Portunidæ. 



I. Thranites velox, Bovallius. 

 Øfversigt Vet. Akad. Forh. 1770, No. 9. 



A specimen of this form. first described by Bovallius, 

 was tåken — we are sorry to sav in a highly mutilated 

 condition — on the Ist cruise, off the outer slope of the 

 Storeggen Bank (Stat. 24). at a depth of 90 fathoms. 



For this form, Bovallius has instituted a new genus, 

 which, however, in my judgment, would appear to differ 

 but slightly from the genus Portunus. Of the known species 

 belonging to the latter genus, the animal in question ap- 

 parentlv approximates closest P. longipes Roux. which has 

 likewise the most posterior of the lateral teeth on the 

 carapax unusually produced. 



The specimen obtained, like that described by Bovallius, 

 was a male. agreeing in all essential characteristics with 



