CRUSTACEA MAI.ACO.STRACA. 



19 



Occurrence. The "Ingolf took this species at the following two stations. 



S. of Iceland: St. 67: 61° 30' N. L., 22° 30' W. L., 975 fm., temp. 3°; i female. 

 — — - 65: 61° 33' — 19° o' — 1089 — — 3^; I male. 



Distribution. This .species was- first taken by the Prince of Monaco at ten stations near 

 the Azores and in depths from 330 to 733^11. These islands lie between 37^^ and a little below 40° N. L. ; 

 the occurrence of G. affiiiis at 6i"2° N. L. and at much greater depths as indicated above has there- 

 fore considerable interest. Further, it has been taken in the South Atlantic at ca. 25V2S. L. in a vertical 

 net at 1064 fm. and 498 fm. (Doflein), at the coast of East Africa a little below 3° N. L. in 724 fm. 

 (Doflein) aud in the Indian Ocean off the Travancore coast (Alcock). 



Remarks. A. Milne-Edwards and Bouvier have given a detailed and careful description of 

 this species and remarked on the differences between it and the nearly allied G. qiiinquedcns Smith. 

 The "Ingolf" specimens certainly belong to G. affinis, which is evident amongst other things from the 

 form of the last joint of the walking legs, a character specially noted by the French authors with 

 good reason. These authors have only figured an extrenieh' large specimen; my specimens are rather 

 small, the carapace in the male being only 40 mm., in the female 42 mm. in length, and I have thought it 

 useful to give the outline of the carapace of both specimens so as to show the variation in form and 

 number of processes between these two specimens and between these and the specimen figured by M.-Ed- 

 wards & Bouvier. 



The female bears thousands of very small eggs, the diameter of which is 0-5 — o'6 mm. The 

 Zoese of a number of eggs were just breaking out or had just broken out. This is of interest as it 

 shows that there is here a normal swimming stage in this deep-water form. 



10. Geryon tridens Kr. 



! 1837. Geryon tridens Kroyer, Naturh. Tidsskr. B. I, p. 10, Tab. i. 

 1881. — longipes A. Milne-Edwards, Compt. Rend. Acad. Sc. Paris, T. XCTII, p. 879 (teste A. M.-Edw. 



& Bouvier). 

 ! 1900. — — A. Milne-Edwards S: E. L. Bouvier, Exp. Sclent, du Travailleur et du Talisman, 



Crust. Dec, I, p. 103, PI. II, PI. XVII, figs. 13—21. 

 1903. ~ — Senna, Bull. d. Soc. Entom. Ital, Anno XXXIV, 1902, p. 354. 



Occurrence. Between the Fjeroes and Scotland: 59° 28' N. L., 8" i' W. L., 687— 580 fm.; i spec. 

 ("/s 1902, "Michael Sars"). 



Distribution. The species was originally founded on a specimen from the south-eastern 

 part of the Kattegat; later, it has been taken in the Skager Rak near the Skaw (Joh. Petersen). In 

 Norway it is not rare in the inner part of Christiania Fjord and has also been taken in one of the 

 fjords at Bergen (G. O. Sars). It is noted from 48''3i'N. L., lo"" 3'W. L., 690 fm. (Norman), near Valentia, 

 Ireland, in dredging from "85 to 808 fathoms", lastly from 59° 37' N. L., 7^19'W. L., 530 fm., temp. 8". 

 As G. longipes has been included as a synonym, the distribution of the species is extended to the 

 following regions: Gulf of Gascogne, at a number of localities with depths from 346 to 617 fm. (Caullery, 

 A. Milne-Edwards & Bouvier), the western Mediterranean near the south coast of France, at Sardinia, 



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