﻿COPlil'ODA 207 



Distribution. Brady's specimens were taken in the Indian Ocean 47° L. .S. 45'"' L. E. at tlie sur- 

 face. B>' Til. Scott it was recorded from the (inlf of (iuinea, and, accordinj^' to I-'arran, it is fairh' com- 

 mon off the west coast of Ireland at depths of from 100 to 1000 fathoms; occasionally it has been found 

 at or near the snrface. According to Sars it is a true pelagic form (often occurring clo.se to the sur- 

 face of the sea), which is found along the greater part ul the Norwegian coast as far north as Lofoten 

 Islands, as well as sometimes in the open sea. In the sea between Spitzbergen and Greenland as far 

 north as 8o°i7 L. N. the Due d'Orleans has gathered this species in 32 samples from about 80, between 

 7/, and '5/8 1905, as well in cold as in tem])erate water. It was neither found at the ver\- surface 

 nor l)eIow 500 meters, but in 12 out of 14 samples taken at a depth of from lofj to 200 meters, gene- 

 rall\" scarce never abundant; in 8 samples adult males as well as females were found at a depth of 

 from 20 to 400 meters. 



Remarks. I have followed Sars in referring the northern form to lirady's species from the 

 Indian Ocean, though liis description is too incomplete for a certain identification. In spite of minor 

 differences, f. inst. in the shape of pes V of the adult female, I am fairlv convinced that Mrazek's 

 .y. Roincri is identical with this species. As the species has not l)een found, as far as I know, in any of 

 the extensive collections from the South- and Mid-Atlantic or Indian Oceans, I think we are entitled 

 to regard this species as one which has its chief centre of distril)Ution in the North-Atlantic and in a 

 less degree in the Arctic seas cuunnnuicating with it. It seems not to have been found in the North 

 Sea proper or adjacent waters; ma\' be on acc(_)unt of lower salinity. 



The records of the "Ingolf," wiiich are all from the nicniths May to July, and almost all with 

 the vertical net down to about 100 fathoms, tell the same stor\- as the abo\e mentioned records of the 

 Due d'Orleans; that the species in tliese regions and at this season is only exceptionally found at the 

 surface; if it were not so, it must have been found in sexeral of the ninnerous surface samples from 

 the Ingolf or the Danish East-Greenland E-xp. It is worth recording that the species was found in 

 several surface samj^les gathered from the mentioned expedition in the montli of September, south- 

 west of the Fferoes. The Ingolf material does wA allow any final conclusion about the time of pro- 

 pagation, but as adult males were found in 19 out of 24 samples (in a percentage \ar\ing from about 

 10 to 50) taken from Ma\- to July, and as spermatophores were often attached to tlie genital somite 

 of the female as well as sometimes to that of the male, it is almost certain that the .species is propagating 

 then. Tlie Due d'Orleans found onlv males in 8 out of 32 samples. Adult males were gathered south- 

 west of the Faeroes in the month of September. Young animals of the iK'unltimate stage were found 

 in most samples, except in those from the month of vSeptember. 



66. Scolecithricella Ingolfii n. sp. 



(PI, \'III figs II a— c). 



Description, fy. The shape of the bodv is practically like that of .V. iiniior\ the head is perhaps 

 a little more raised. The lateral corner is, like that of jneceding species, somewhat triangularh' produced. 

 The aiihiiiiiihii and oral ai>])endagcs are coni])letel\' like those of .S". iiiiuor. 



The /irsl pair of legs is scarceh different; the first inner segment of the srcoiid foot has a 



