THE MUNNOPSID^? 



385 



two-branched, the branches single-jointed. Eight Nor- 

 wegian species have been described by G. 0. Sars, in some 

 of which the second, third, 



and fourth limbs are ex- 

 tremely elongate, but in 

 Eurycope robusta, Harger, 

 from the Gulf of St. 

 Lawrence, they are not 

 much longer than the body. 

 The three species first de- 

 scribed, Eurycope cornuta, 

 phalangium, and mutica, 

 all of Sars, range in length 

 between a seventh and a 

 sixteenth of an inch. Eu- 

 rycope gigantea, Sars, ex- 

 tensively distributed in 

 the high north, attains a 

 length of an inch and a 

 third, by a breadth oi" over 

 half an inch. It is notable 

 that this species and Mun- 

 nopsis iypica appear inva- 

 riably to occur together. 

 Both sexes are known of 

 both. The first antennas 

 are shorter in the females 

 than in the males. In Eu- 

 rycope gigantea there is, 

 according to Hansen, a 

 little triangular plate on 

 the third joint of the second 

 antenna, which may be re- 

 garded as a rudimentary 

 exopod. It would not seem 

 very rash to conclude from 

 this that the first two 

 joints are really one joint 

 subdivided. The fourth 



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t. — Eurycope gigantea^ Sars [Hansen], 



