135 



strong, inner expansion of proximal joint not very prominent, and broadly round. - ( 1 

 at the end, with 5 subequal setee, none of which are spinil'onu. 



Male, as usual, somewhat smaller than female, and having tin- urosome 

 distinctly 5-articulate. Anterior antennae very strongly built, with the 4th joint 

 bulbously inflated, and the terminal part claw-like. First pair of legs of exactly 

 the same structure as in the female. Inner rainus of 2nd pair, as in the female, 

 distinctly 3-articulate, only differing in having the apical setae shortened and spi- 

 niform. Last pair of legs with the distal joint more oblong in form, and armed 

 outside with 4 very strong spines, inner expansion of proximal joint very slight, 

 and provided with only 2 marginal setae. 



Colour yellowish, changing to a light chestnut-brown. 



Length of adult female 0.54 mm. 



Remarks. I think I am right in considering the present form to be 

 identical with that recorded by Philippi under the above name. The general form 

 of the body, at any rate, agrees fairly well with the rough figure, given by Phi- 

 lippi. As stated above, Prof. Brady has confounded this form with Diu-ti/liqn^ 

 flavus of Glaus, only the female described being referable to Claus's species, 

 whereas the male unquestionably belongs to the form here treated of. 



Occurrence, I have found this form occasionally in several localities off 

 both the south and west coasts of Norway, from the Christiania Fjord at least to 

 the Trondhjem Fjord. It occurs in moderate depths, ranging from 6 to 20 fa- 

 thoms, among algae and Hydroida. As is the case with the species of the genera 

 AspnViscns and Porcell'l'ii., the animal has the power of applying its flat body 

 so firmly to any object that it can only with considerable difficulty be detached 

 when alive. On coming in contact with the surface of the water, it remains 

 floating upon it, like some other Copepoda, and may thus easily be picked up 

 from any freshly taken sample. 



Distribution. British Isles (Brady), Mediterranean at Naples (Philippi). 



Gen. 36. AmenOpMa, Boeck. ISO."). 



Generic C Vrm-/r,x Body flat, shield-like, recalling in general appearance 

 that found in the species of the genus Zaus: rostrum, however, ohsolrtr. 

 quite normal. Anterior antenna; of the usual structure. 9-articulate, in male only 

 slightly dilated, though distinctly prehensile. Posterior antenme with the outer 



