PYCNOGONIDA. 



Besides the stations mentioned by H a n s e n , 1. c, p. 23 , from the south-western coast of Nova 

 Zembla, the western coast of Greenland, the Finmark, and Knllen, it is found in the Zoological 

 Museum also from the Davis Strait 65 35' Lat. N. 54 50' Long. W. , 80 fath. (idem) ; the belt of rocks 

 and islands outside Frederikshaab , 25 fath. (idem, and Lundbeck); in the Bredebugt (the Denmark 

 Strait) 9 fath. (the lieutenant Jensen); in the 0fjord (the Greenland Sea) 15 fath. (Diana). 



Distribution. The species is one of the most widely spread Pycnogonida, from the arctic 

 seas quite down into the Sound, and towards the west from the Davis Strait along the eastern coast 

 of America; it keeps, however, mostly nearer to the coast, and the depths are most frequently small, 

 rarelv more than 100 fath. 



3. Gen. Pallenopsis Wils., 1880. 

 Pallenopsis Wilson, Report Pycnog. Blake, 1880. 



Pallenopsis plumipes n. sp. 



PL. IV. Fig. 17. 

 Corpus sat robustum, glabrum. 



Collum vix ullum. 



Rostrum longum, percrassum, obconicum, ante medium manifeste constrictum. 



Tuber oculare parum altum, tumidum, apice obtuso, recurvo, tuberculis minimis scabroso; ocelli parvi 



rotundi, maculis pigmentariis permagnis. 

 Segmentum caudale gracillimum, productum, siibcylindricnm , ad apicem vix clavatum, in obliquum 



erectum. 



Chelifori sat longi, graciles, scapo manifeste bipartite; digiti longiusculi, graciles, sat hiantes, inermes. 

 Palpi breves, solidi, acuminati. 



Pedes oviferi breves, absque ungue; pars terminalis pedum absque laminis. 

 Pedes gressorii longi, longitudinem totam quater explentes, sat graciles, articulo priore tibiali pro parte, 



altero toto binis seriebus setarum longaruui natatoriarum instructis. Unguis minus productus, 



sat gracilis, unguiculis auxiliaribus brevibxis, gracillimis. 

 Long, tota 29 mm . Rostri 9""". Corporis 13""". Segmenti caudalis j mm . 



The trunk rather plump, smooth. 



The neck scarcely conspicuous. 



The proboscis long, very thick, obconical, before the middle distinctly constricted. 



The oculiferous tubercle not high, swollen, the point rounded, bent backwards, roughened by very 



small knobs; the ocelli very small, round, the coloured spots very large. 

 The caudal segment very slender, very long, almost cylindrical, slightly clavate towards the point, 



obliquely erect. 



7* 



