PYCNOGONIDA— CALMAN. 



37 



Occurre7ice.— Station 220, off Cape Adare, 45-50 fathoms ; 4 specimens. Station 294, 

 Ross Sea, 158 fathoms ; 3 specimens. Station 314, McMurdo Sound, 222-241 fathoms ; 

 3 specimens. Station 338, Entrance to McMurdo Sound, 207 fathoms ; 200 specimens. 

 Station 340, off Granite Harbour, 160 fathoms ; 20 specimens. Station 356, off Granite 

 Harbour, 50 fathoms ; 11 specimens. 



Measurements, 



m mm. — 



Length of proboscis 



Diameter of proboscis . 



Length of trunk 



Length of cephalic segment 



Greatest width of cephalon 



Height of ocular peduncle 



Width between first and second lateral processes 



Width across second lateral processes 



Third leg (right or left) — 



Coxse (together) . 



Femur 



First tibia . 



Second tibia 



Tarsus 



Propodus . 



Claw 



1 One of two specimens {$ ? ) in tube labelled " figured specimens," here selected as Holotype. 



2 Syntype of var. cmstrinorum. . 

 ^ Specimen approaching typical form. 



■• Specimen approaching var. austrinorum. See remarks below. 



Remarks. — The great majority of the specimens obtained by the " Terra Nova " 

 agree closely with the " Discovery " specimens that form the types of the variety 

 austrinorum. There are. however, a number that, in their smaller size, longer legs, 

 and more strongly built and hairier bodies, approach the typical form of the species 

 without its being possible to separate them definitely from the others. I am not 

 prepared to express an opinion as to the status of the variety austrinorum, but it may 

 not be without .significance that, of all the " Terra Nova " specimens, those that 

 approach most nearly to the typical australe-iovm. are the four obtained at Station 220, 

 off Cape Adare, the type-locality for the species. 



Bouvier's Nymphon stylops appears to differ in no essential feature, as far as his 

 description and figures go, from the typical form of this species. 



