CRUSTACEA MALACOSTRACA. gi 



wide distribution in the Atlantic and western Mediterranean (several observers and Copenhagen Mu- 

 seum). The Plankton-Expedition has taken it in the Irminger Sea at 6o° N. L. and east of New- 

 foundland; it was also taken off Nova Scotia, off France, at the Azores as also between Buenos 

 Avres, Tristan d'Acunha and Cape of Good Hope, whilst it is still unrecorded from the part of the 

 Atlantic King between ca. 28° N. L. and 37 S. L. The Copenhagen Museum also has it from two 

 places in the southern part of the Indian Ocean: 4o°8'S. L., 52 E L. and 4o°4i'S. L., 85 22' E. L. On 

 the other hand I cannot accept Ortmann's note of its occurrence in the eastern Pacific as correct until 

 further information is forthcoming. 



The fact that the Copenhagen Museum has older material from no less than 12 widely separated 

 places shows that the species comes up to the surface at any rate sometimes in the night, as the 

 material has been collected for us by the captains of trading ships by means of a net towed after the 

 ship. — G. H. Fowler (1905) gives a detailed report on the bathymetric distribution of the species in 

 the Bay of Biscay; it was partly taken with an open vertical net, partly with a closing net and the 

 results are "that the centre of distribution lay about 50 and 75 fathoms", that the species was also 

 taken in 12 per cent, of the hauls near the surface and in the closing net as deep down as 750 — 500 fin. 

 and in several intervening depths up to a haul in 150 — 50 fm. 



Remarks. Males are much more rare than females. Sars has only seen females and neither 

 Ortmann nor Holt & Tattersall say anything of males, which indicates that they have not taken 

 specimens of this sex. As I have shown in the paper mentioned in the synonymy list, males differ 

 in the most distinct manner from the females by lacking the very long and thin rostrum present in 

 the latter. These males were taken by the "Thor", and neither in the older material of the Museum 

 nor amongst over 20 specimens taken in 1904 by the Prince of Monaco are there any males. 



8. Nematobrachion boopis Calm. 

 11896. Nematodactylus boopis Caiman, Trans. Roy. Irish. Acad., Vol. XXXI, p. 17, figs. 19—28. 

 1905. Nematobrachion — Caiman, Rep. Sea and Inland Fisheries of Ireland, 1902— 1903, Part II, 



App. 4, p. 153, PI. XXVI. 

 Occurrence. The "Ingolf" did not take this beautiful form, but it was found by the "Thor" 

 at the following 6 stations. 



West of Iceland: 65 00' N. L., 28° 10' W. L., Young-fish trawl with 1000 m. wire out; 5 spec, (depth 1240 m.). 

 South - — 6i°34' — i9°05' — — — 1800 m. 2 — ( — 2160 m.). 



— . _ 62°49' — i8°46' — — — 100 m. 1 — 



West of the Fasroes: 6i° 49' N. L., 14° n'W. L., Young-fish trawl with 800 m. wire out; 3 spec. 

 South-West of the Faroes: 6i° 15' N. L., 9 35' W. L-, Young-fish trawl with 900 m. wire out; 2 spec. 

 _ . 6i°o8' — 9 28' — 820 m. 1 — 



Distribution. In 1905 the "Thor" took this species 3 times west and north-west of the 

 Hebrides, further, south-west of Ireland and west of North France: 6 times in all and only with 

 the young-fish trawl, but the length of line out varied from 300 to 1500 meters. It was known earlier 

 from the waters west and south-west of Ireland (Caiman, Holt & Tattersall), also from a place west 



of France and from a number of stations within the triangular area: Gorringe Bank, the Azores and 



12* 



