﻿C()l'i;i'ODA jrj 



Occurrence etc. The S/S Thor has twice oathered a few specimens of this interesting species, viz: 

 "/? 1904 St- 1S3 6i°30 L. N. i7°o8 L. W. Yt. 1800 M. Wire 3 1"? (one witli 2, the others witli single egg- 

 sac), 2 yc? (V), I y (III). 

 '% 1904 vSt. 180 61=^34 L. N. i9°05 L. W. Yt. 1800 M. Wire 4f? (one with 2 egg-sacs), i y^^ (V). 



On the west coast of Ireland "three specimens of this species were taken at depths of 700, 730 

 and 1150 fatlioms. By Wolf end en it has been recorded at about 20° L. vS. and 20° L. W. On account 

 of the longer antennulae and well developed Se Re I pes II I think with Farran, in contra.st to 

 Wolf end en, that this species is well distinguished from \\ olii^nrllira ,Steuer from the vSouth Atlantic. 



Euchaetidae. 



Euchaete Philippi 1843. 



A. Scott lias established a new genus (1911 p. 64) Parcnclurfi- with E. )iorvcgica as a type in 

 contrast to the true Eiic/nrfc with E. marina as type species; the latter is characterized by the fifth 

 pair of the legs in the male, which has the Re III of the left foot elongated and pointed, and in 

 the females "two of the six apical spines on the first niaxilliped, in addition to being furnished with 

 rows of very short spinules have also a number of moderately long and conspicuous spinulcs". Tiie 

 latter characteristic is very interesting, ])ut probably not important enough for the establishment of 

 a new genus, especially as a single apical seta of the mentioned structure was found in /:". hrbrs, in 

 which pes V of the male is of the E. iiorT'cgica t>pe; in E. acuta only a single seta of this structure 

 was found. 



In spite of specific variations the structure of the epistoma, and the anterior and posterior surface 

 of the labrum show, as seen by comparing the figures on PL VI and the descriptions, common features; 

 the arrangement of the hairs in front of the lamina labialis is fairly characteristic. 



The arrangement of the glandular pores in the legs does not show specific difference of great 

 value. In the outer margin of Re III pes I, somewhat beyt)nd the middle, a glandular pt)re was found, 

 alike, but less distinctl\- developed than the corresponding pore in ]\ildh'icllii iiisigiiis I-"arr. (I'l. \'I fig. 

 2a). In the second jiair of legs a pore is found at tlie base of Se Re II and Se 3 Re 111 as well as 

 one minute one near the tip of Ri III; in the third and fourth pair, in addition to these, a pure is 

 found at the base of Se Re I. 



In this genus the adult females show the most characteristic systematic features, especialh' 

 in the structure of the genital somite; it must be remembered, however, that the usual inspection of 

 the genital area from the side and from below is not quite satisfactory for a full estimation of the 

 characters. A full dissection is often necessary to understand the complicated structmes of the vulva; 

 unfortunately, I have not had the opportunity of doing so at the present. The characters found in the 

 nundjer of setae in the maxilhdae, as well as in the relative length of the spines in the exopodite of 

 the second pair of legs are of value, but often .show some variations. To refer the copepodites as well 

 as the adult males to the right species is often im])Ossil)le. 



