REPORT ON THE PYCNOGONIDA. 



19 



Depth in Fathoms. 



(?) 



Name. 



412 



540 (" Knight 

 Errant") 



83 



45 to 120 



1G75 



10 to 45 



diagnosis of his species says : unguiculi auxiliares nulli 

 (p. 40). A considerable number of specimens of this 

 species have recently been dredged (North of Scotland) 

 during the cruise of the " Knight Errant." One of the 

 commonest species in the northern part of the Atlantic. 

 (1) Nymphon giganteum, Goodsir, Ann. and Mag. of Nat. 

 Hist., vol. XV. p. 293, 1845. Goodsir's description is 

 not sufficient to determine this species. Wilson 

 (Pycnogouida of New England, Trans. Connect. Acad., 

 vol. V. p. 16, 1880) considers this species as identical 

 with the N. dromii of Kroyer. As Goodsir does not 

 even say whether the body is slender or robust, it is 

 extremely difficvdt to ascertain whether or not Wilson's 

 suggestion is right. 



*N(jmphon macronyx, G. 0. Sars, Prodromus, Arch. f. 

 Math, og Naturvid., ii. 365, 1877. I know this 

 species by the description of Prof. Sars, from a pencil- 

 drawing he kindly sent me, and feel sure it is a good 

 sjjecies. Recently I had a fair opportunity of becom- 

 ing acquainted with it, as numerous specimens were 

 dredged north of Scotland, and forwarded to me by Mr 

 Murray. As only a very short diagnosis of this 

 species has been given by Prof* Sars, I will publish 

 hereafter a detailed description of it. 



* Nymphon hrevicollum, n. sp. A fine, well-characterised 

 species. 



*Nymphon hrachyrliynchus, n. sp. A small but well-char- 

 acterised species, which seems to abound at a depth of 

 45 to 120 fathoms. 



* Nymphon meridionalc, n. sp., shows a certain affinity to N. 

 gracilipes, Miers (Ann. and Mag. of Nat. Hist., 4th ser., 

 vol. xvL p. 76, 1875) ; so the latter species may be con- 

 sidered as a shore-relation of this true deep-sea species. 



Nymplion gracilipes, Miers, Ann. and Mag. of Nat. Hist., 

 4th series, vol. xvi. p. 76, 1875. N. gracilipes, 

 Miers, Bohra, Pycn. des Mus. zu Berlin, Monatsb. der 

 K. Akad. der Wiss. zu Berlin, p. 170, 1879. N. 

 antarcticum, Miers, Crustacea of Kerguelen Island, 

 Phil. Trans. Lond., voL clxviii. Extra vol., p. 

 200-214, pi. xL, 1879. This species seems to be a 

 good species. Miers thought it necessary to alter the 

 name he originally proposed, because in the same year 

 the same name was given by HeUer to an arctic 

 species. The N. gracilipes, Heller, being only a 

 synonym of the N. strdmii, Kr., I think it best to 

 retain this name for the Kerguelen species, as was 

 originally projjosed by Mr Miers. 



Geographical Distribution. 



off the Isles of Shoals, 

 HaHfax (Wilson). 



off 



Sea at Embleton, Northumber- 

 land. 



Lat. 62' 44' 5" N, long. 1° 

 48' E. To the north of 

 Scotland. 



South of Halifax, Station 49, 



Challenger Expedition. 

 Kerguelen. 



South of Kerguelen Island, lat. 

 65° 42' S., long. 79° 49' E., 

 Station 43, Challenger Ex- 

 pedition. 



Kerguelen. 



