124 COPEPODA 



The fifth pair of legs is scarcely different from Giesbrecht's fig. 21 (Taf. 15); the teeth along 

 the inner margin of Re III pes V dext. correspond really to transverse keels, as seen in text-fig. 31 c. 

 YQ (Stage V). Size of male from Thor St. 88 4-19 mm.; anterior division 3-29 mm.; uro- 

 some 0-90. 



The shape of the body is in the main as in adult female, without frontal keel. The appendages 

 are in the main like those of the adult female, except the antennae; these organs show similar dif- 

 ferences as in E. curticaiida; the antennae of the female is in the main like those of the adult, with 

 rudimentary Ri, which, however, has the setae of Ri 2 better developed (in Li 4 setae); the antennae 

 of the male are like those of the adult by the more powerful Ri, which, however, only reaches the middle 

 of Re 2, and has a similar number of setae as in the female. The natatory legs differ somewhat from 

 those of the adult by the less developed Se of Ri I, as seen in text-figs 31 d e, as well as by the wanting 

 glandular pore at the base of Se i Re III. The inner margin of the second basipodite in the fourth 

 pair of legs is smooth in the male, but has in the female about 6 short delicate bristles. The fifth pair 

 of legs has, as seen in text-fig. 31 f, a characteristic structiire resembling that of the adult male. 



Occurrence. The S/S Thor has gathered a few specimens of this species at the following 

 stations: 



"/ 7 1904 St. 183 6i3o L. N. I7o8 L. W. Yt. 1800 M. Wire 5 f ?. 

 2 V 6 1905 St. 93 49^5 L. N. i22O L. W. Yt. 200 M. Wire i f ?. 

 '5/ 6 1905 St. 82 5ioo L. N. n43 L. W. Yt. 1200 M. Wire 2 f?, i yd 1 (V). 



800 M. Wire 2 f ?, 2 f d 1 . 

 2 % 1905 St. 88 4809 L. N. 83O L. W. Yt. 300 M. Wire a f?, i fd 1 , i y? (V), i yd" (V). 



Distribution. The species, according to Farran, is fairly common on the west coast of Ireland 

 "at depths of from 350 to 700 fathoms". It has been recorded from the North-east Atlantic, the South 

 Atlantic, the Mediterranean, the Malay Archipelago and the Pacific (Bay of California). 



Remarks. In spite of the mentioned small difference the female must be regarded as identical 

 with E. messinensis\ if the difference in the first pair of legs between my male and Giesbrecht's is 

 really a constant one, the identification of the males seems to be rather doubtful. 



34. Euchirella intermedia n. sp. 

 (PI. IV figs 4 a c; PI. VIII fig. 3; text-figs 32 a f.) 



1902? Euchirella carinata n.sp. Wolfenden, pp.366 367. 



1911? Euchirella gracilis n. sp. Wolfenden, pp. 237, text-fig. 22, tafel XXVII figs 8 10. 



Description. f.. Size of specimen from Thor St. 82 5-66 mm. ; anterior division 4-66 mm.; uro- 

 some i mm. 



No frontal keel is found; the short strong rostrum is directed forwards and downwards 

 (cf. text-fig. 32 e). The articular membrane between head and first thoracic tergite is present laterally; 

 the articular membranes between the thoracic tergites show similarity to those of Euch. curticauda; 

 the fifth somite is laterally indicated as a mere marginal seam, and the lateral corner is rounded as 

 seen in fig. 4 a. 



