CRUSTACEA MALACOSTRACA. 93 



Occurrence. The "Ingolf" has not taken this species but it was twice found by the "Thor" 

 in 1904. 



South of Iceland: 63o8'N. L., 2i3o'W. L., Young-fish trawl with 250 m. wire out; i spec. 



South-West of the Faeroes: 61 15' N. L., 9 35' W. L., Young-fish trawl with 1000 m. wire out; 2 spec. 



Distribution. The species was twice taken to the west of the Hebrides by the "Thor"; it is 

 frequent to the west and south-west of Ireland and in the Bay of Biscay (Holt & Tattersall), at the 

 Azores and Canary Isles (Hansen), and in the Atlantic between 42 N. L. and 8 S. L. (Ortmann); it is 

 not rare in the western Mediterranean (several observers) and was founded on a specimen taken south 

 of the Cape of Good Hope. As the species is quite lacking in the older material of the Copenhagen 

 Museum it must occur rarely near the surface, though it has been taken there (Ortmann, Holt & 

 Tattersall, etc.). Fowler (1905) gives a detailed account of its bathymetric occurrence in the Bay of 

 Biscay; reference for details may be made to his paper. 



Remarks. In the Monaco Bulletin No. 30 I have brought in -5". longicornc as synonym to 

 S. Suhmii, which last I thought was founded on not fully developed specimens. Later investigation 

 of an immense material from various seas has shown me, that there are four nearly related species 

 with long antennular peduncles, and therefore I must restore the name S. longicorne, but an account 

 (with figures) of the four species is postponed to a paper in preparation. 



III. Order: Mysidacea. 



Within the region the fauna of which is treated here 35 species of this Order have hitherto 

 been found. But, whilst I have seen specimens from this region of all the species of Decapoda and 

 Euphausiacea (with exception of a single doubtful form), there are no fewer than 4 species of the 

 Mysidacea noted in the following pages which are mentioned exclusively on other authorities. 



The limits of the region dealt with, sources of the material, synonymy etc. have been mentioned 

 in the introduction to the Malacostraca, to which reference may be made. 



A. Suborder Lophogastrida. 



i. Gnathophausia zoea Will.-Suhm. 



PI. IV, figs. 3 a 3 e. 



1875. Gnathophausia zoea Willemoes-Suhm, Trans. Linn. Soc., Ser. 2, Vol. I, p. 32, PI. IX, figs. 2 15. 

 ! 1885. G. O.Sars, Challenger Rep., Zool., Vol. XIII, p. 44, PI. VI, figs. 6-10. 



willemoesii G. O. Sars, Challenger Rep., Zool., Vol. XIII, p. 38, PI. V, figs, i 6. 

 Occurrence. The "Ingolf has taken this species 9 times. 

 Davis Straits: St. 25: 63 30' N. L., 5425'W. L., 582 fm.; i spec. 

 West of Iceland: St. 12: 64 38' N. L., 3237'W. L., 1040 fm.; i spec. 

 - - n: 64 34' 31 12' 1300 i 



