PHOXICHILIDIIDAE 



91 



Remarks. This is undoubtedly an immature specimen of P. spicata, Hodgson. It 

 agrees in most respects with the Terra Nova specimen ; the following differences are 

 doubtless mostly due to the fact that the specimen is not fully developed, (i) The 

 lateral processes are less widely separated, so that the cephalic segment is slightly longer 

 than the sum of the two succeeding segments. (2) The oviger is not fully developed, is 

 shorter than the proboscis and divided into only four segments. (3) The walking legs 

 are relatively short (67 instead of 9 times the trunk length), and the spinules are set 

 on higher tubercles. 



Measurements {mm.) 



Length of proboscis ... 



Greatest width of proboscis 



Length of cephalic segment 



Width of anterior cephalic lobes 

 Length of trunk 



Width across second lateral processes 

 Length of abdomen 



Distribution. Previously recorded from Gauss winter quarters and McMurdo 

 Sound. 



? Pallenopsis sp. (Fig. 45). 



St. 256. 23.vi.27. 35° 14' S, 6° 49' E, 

 850-1100 (-0) m. Young fish trawl : i im- 

 mature specimen. Pelagic pycnogon ! 



Description. Trunk distinctly 

 segmented; lateral processes sepa- 

 rated proximally by narrow intervals, 

 distally by rather more than their 

 own diameter. Cephalic segment 

 equal to the sum of the three 

 posterior segments; cephalon little 

 produced over base of proboscis, 

 occupying about half the length of 

 cephalic segment, scarcely wider 

 than long. Ocular tubercle as high as 

 its basal diameter, recumbent, nearly 

 as wide as cephalon; eyes small, 

 rounded and prominent, apparently Fig. 45. ? Pallenopsis, sp. Young: a. Chela: x 100. b. Ter- 



reduced to one pair (Fig. 45 c). -'-' ^TT:\ T^'"' '''^ ' '" " ''°"' '"' 



. , ^ 1 J r U.-1 , body with left chelophore: X 27. 



Proboscis long, slender, slightly ^ 



expanded in middle and again at apex, almost equal in length to scape. 



Abdomen long, sub-cylindrical, blunt, almost vertical. 



12-2 



