﻿COPEPODA 



179 



52. Euchaete Scotti Fanan. 

 (PI. VI figs 10 a— c; Icxt-figs 51 a— j.) 



190S. Eucbsete Scotti n. sp. Farran, p 42, pi III figs 11- 13 



191 1? " — Fair. Wolfenden, pp. 301— 302, pi. XXXV fig. 2, text-figs S3 a-c. 



Description, f?. Size of specimen from St. 183 was 5-99 mm.; anterior division 4-26 mm.; nro- 

 some 173 mm. Farran's speciinens measured 57— 63 mm., VVolfenden's specimens measured 4-2 — 

 4-85 mm. 



The shape of the body is more robust than in the preceding species, as the anterior part i.s 

 only c. 2-3 as long as wide, and as wide as the urosome is long. The lateral corner of the ccplialo- 

 thorax is not quite regularly rounded, but somewhat triangularly produced; llie anterior division is 2-5 

 as long as the urosome, which shows the following proportion between tlie three first somites (15 8-5 



s i 



Text-fig. 51. Kiicluric Scotti Farran. 



a— (1. f?. Genital somite >( 18. e. f9. Vulva from below X iSo. f. i^. Left comer X 18. g h. Y9— c? (St. V). .\bilomen 



from the left X 24- i- Yd" (St. V). Lateral corner X 15. j- Ycf (St. V). Pes V X '5. 



8-5). The i:;c)iital soiiiitc. which is i-;i, as long as wide and i-2 as long as deep, is in dorsal \iew slightly 

 asymmetrical, and has the lateral margins strongly convex, somewliat in front of the middle. Tlie 

 genital proliihtrancc has in lateral view a wing-like anterior proces.s, sometimes slightl)' conca\e in the 

 middle, and a more dorsal and posterior process, separated from the former by a distinct incision (text- 

 figs 51 a— e). In ventral view the vulva shows some .similarity to Wol fen den's figure 53 a, which is, 

 however, too incomplete for a detailed compari.son, and is distinctly different from the mentioned 

 species of this group. The posterior incision in the median plate is not observed; the anterior tri- 

 angular point, of which an o\al j)late is found, is just indicated. 



The inilctiiiiilac extend just beyond the end of the third thoracic tcrgite, but not to the end of 

 the cephalo-thorax ; the segments 24 ~ 25 are as long as the segment 19; the ai)pendages scarcely show 

 differences from those of /;". iiorvi-gica. The month-limbs are scarcely different from lliose of A", barbata; 



23* 



