568 



large and somewhat flexuous, impinging, when closed, against the posterior 

 projection of the ])ropodos. The 2 anterior pairs of pereiopoda not very much 

 elongated, basal joint somewhat expanded, and nearly as long as the remaining 

 part of the leg. Tlie 3 posterior pairs of pereiopoda successively increasing 

 in lengtli, liasal joint of the antepenultimate pair rather hroad and oljliquely 

 rounded, that of the penultimate pair of a regular oval, that of last pair some- 

 what larger, and having the posterior edge strongly curved. Last i)air of 

 uropoda scarcely extending beyond the others, basal part somewhat expanded, 

 terminal joint about same length and cylindrical in form, with 2 strong 

 apical spines and a few slender bristles. Telson very small, somewhat 

 broader than it is long, and transversely truncated at the tip, lateral corners 

 dentiform projecting, and having inside 2 unequal spines. Body moi'e or less 

 densely mottled all over with dark ])igmentary spots, giving the animal 

 sometimes a blackish hue. Lengtli of adult female 3 mm. of male about 

 the same. 



BemarJcs. — This form was first described liy the Rev. Mr. Norman 

 under the above name from British sjieeimens, and was subsequently recorded 

 by Boeck from the Norwegian coast. The Orthopahne TerscheUingi of Hoek 

 is undoulitedly tlie same sj^ecies. On the other hand, that described by 

 M. Bonnier as MicroprotopHS macnlahis must be regarded as specifically 

 distinct, differing, as it does, very conspicuou.sly in the structure of the 

 posterior gnathopoda botli in tlie female and male sexes. It was originally 

 desci'ibed by M. Chevreux as 31. longimanus, and ought to l^e maintained as 

 a distinct species. 



Occurrence. — I have met with this form in several places both on 

 the south and we.st coasts of Norway, as far as to Bergen. It is generally 

 found in comparatively shallow water, from 2 to 10 fathoms, sandy or 

 muddy bottom. 



Distribution. — British Isles (Norman), Kattegat (Meinert), Dutch 

 coast (Hoek), coast of France (Chevreux), Azores (Barrois). 



Gen 9. Photis, Kroyer, 1842. 

 Syn: Eiscladus, Sp. Bate. 



Body not very slender, but smooth, and more or less strougiy curved, 

 with the urosome rather elongated and narrow. Cephalon with the frontal 



