GAMMARID.K. I»i7 



7. Microdeutopus macrouyx. 



(.iaminiUHis imwronyx, Li/jtburj/, Oft vit^. af Kuii(//. I'd. A/auI. Furlitindl. 

 1854, p. 4o8. 



" Female. — Resembling M. longipes, but less compressed, the an- 

 tennae and pereiopodu shorter. Coxae small. The back rather broad. 

 Body slender. Eyes minute, round, black. Cephalon without a 

 rostrum ; back smooth ; three posterior segments of the pleon -with- 

 out spines. Antennie of moderate length : superior longer than the 

 inferior ; first joint of the peduncle much stouter than the rest, 

 second but slightly shorter, and the third equalling about half the 

 second; flagellum consisting of from 14-1(5 articuli, the secondary 

 appendage consisting of live articuli. Inferior antenna) a little 

 more robust than the superior ; third and fourth [fourth and 

 fifth?] joints of the peduncle about equal in length, and passing 

 the extremity of the pedimcle of the superior antenna? ; flagellum 

 consisting of seven articuli. Gnathopoda subequal, the first pair 

 a Httle the larger, hispid, oblong-ovate, destitute of processes and 

 spines. First and second pairs of pereiopoda unetjiuil ; mera large, 

 dilated, and produced at the antero-distal extremity ; carpi short ; 

 propoda arcuate ; dactjla also arcuate, and gradually tapeiing, 

 terminating in a very long unguis. Third pair of pereiopoda 

 about the same length as the second ; the sixth and seventh pairs, 

 being directed backwards, extend beyond the extremity of the 

 pleopoda. External ramus of the posterior pair of pleopoda longer 

 than the internal, as long as the peduncle, and reaching to the 

 extremity of the penultimate pair, both being conical and spinous. 

 Telson short, thick, roimdod posteriorly, and fiii-nishcd abo^•c with 

 two obtuse spiniferous tubercles separated by a little notch. 



" Length 5| millims. 



" Hah. Taken in from 4 to 5 fathoms of water, at KuUaberg in 

 Scania : rare. Inactive, and dies quickly when taken from the 

 water." — Liljehorr). 



53. PROTOMEDEIA. 



Protomedeia, Kroyei-, Tidskr. iv. p. 154. 



Leptocheirus, Zaddach,S]in. CrustapeorumPrnssicorum Prodrom>(s,\>. 7. 



PtiloclioiriLS, S'linipsoti, Marine Invert, of Grand Munan, p. 55. 



Slender, and slightly compressed laterally. Superior pair of antenna) 

 as long as the inferior, having a secondaiy appendage. Coxae but 

 slightly deeper than theii' respective segments. First pair of giui- 

 thopoda subchelate, the second simple. Posterior pair of pereio- 

 poda sub('(pial with the fourth. Posterior pair of pleopoda biraraous. 

 Telson double ? 



