Entomostraca from the Scottish Seas. 129 



(PI. III. fi^-. 19). In the female dissected the ova were nume- 

 rous aud small. The shell in both sexes ornamented with 

 fainr delicate reticulations. The groups of glands situated 

 near the postero-dorsal angles of each of the two valves, as 

 indicated in the drawing (PI. IV. fig. 2), are quite distinct. 



Hab. < Goldseeker ' Station 53, lat. 59° 36' N., long. 7° VV., 

 1140 metres deep, collected in August 1907. Two adult 

 males and one female, and other two smaller specimens 

 which aj)pear to be voung males. 



Retaarks. — The occurrence oi\\\'\^Euconchoecla at Station 53 

 appears to be of interest, as it differs so much in size and in 

 other respects from E. chierchice, G. W. Miiller, the onlj 

 other s})ecies of the genus. E. ehierchice was described from 

 specimens collected by Dr. Cliierchia off the Brazilian 

 coast in lat. 19° S. and long. 39° W. ; these specimens 

 measured about 1*2 mm. in length *. The same species 

 was described and figured in tiie Report on collections 

 made by John llattray in the Gulf of Guinea, under the 

 name o£ Ilalocypris aculeata ; the size of the specimens 

 from these collections was about 1 mm.f It has also been 

 recorded from (huz Bay by Di'. G. S. Brady, who gives the 

 size of the male as IT mm. and of the female as '85 mm. J 

 The ' Goldseeker ' specimens are thus about four times the 

 size of E. ehierchice. Moreover, in both the adult males the 

 rostial projection of both valves ■ of the shell is distinctly 

 bifid, as shown in the drawing (PI. IV. fig. 2), but in the 

 shell of the adult female the rostral projection is not bifid. 

 One other point of interest is the large brush of delicate 

 filaments at the apex of the antennules in both the male and 

 female. The brush at the apex of the antennules in E. ehi- 

 erchice is described by Dr. Brady as consisting "of about 

 twenty setse." In the 'Goldseeker' specimens the brush 

 consists of several times twenty setee. 1 have not counted 

 the number of setse, for they are so numerous, so delicate, 

 and so crowded together, tliat the counting of them would be 

 a somewhat serious task — in a small fragment broken off 

 from one of the brushes at least forty setae were counted. 



Owing to the differences mentioned 1 am inclined to ascribe 

 the ' Goldseeker ' specimens to a distinct species, for which I 

 propose the name of Euconchmcla (T arcy-thompsoni, after 

 Prof. d'Arcy W. Thompson, C.B., Director of the Scottish 

 International Investigations. 



* " Ueber Halocvpriden," Zoologiscb. Jahrb. Bd. v. p. 277, pi. xxviii. 

 figs. 1-10 (1890). 



t Trans. Linn. Soc. vol. vi. p. 142, figs. 5, 6, 33, 34, 38 (1894). 

 X Trans. Zool. Soc. vol. xvi. p. 190, pi. xxii. figs. 9-15 (1902;. 



