99 



Distribution. British Isles (Brady), coast of France (Canu), Shetland 

 Isles, Iceland (Cleve), Baltic (Giesbrecht), Finnish coast (Nordqvist), Atlantic 

 Coast of North America (Cleve), Atlantic Ocean from lat. 40 to 72 N. (Cleve). 



Gen. 16. Eurytemora, Giesbrecht, 1881. 



Syn: Temora (part), Lilljeborg. 



TrutnrcUa, Glaus. 



Characters. Body of comparatively slender form, with the anterior 

 division far less tumefied than in Temora. Cephalosome, as a rule, with a gihbous 

 prominence at the end above, similar to that occurring in Temora, front only very 

 slightly prominent, and provided below with 2 extremely small, soft lappets. Last 

 segment of metasome defined from the preceding one by a distinct suture, its 

 lateral parts in some cases greatly expanded. Urosome slender, with the genital 

 segment in female somewhat protuberant below. Caudal rami elongated and 

 slightly divergent, setae present in the normal number. Eye of moderate size. 

 Anterior antennae comparatively short, scarcely exceeding in length the anterior 

 division, and in female 24-articulate ; right antenna in male distinctly geniculate. 

 Posterior antennae with the outer raraus longer than the inner, and 7-articulate. 

 Anterior lip rather prominent below. Mandibles, maxillae and anterior maxillipeds 

 about as in Temora. Posterior maxillipeds, however, shorter and stouter, with 

 the 2nd basal joint remarkably dilated, and the terminal part somewhat recurved 

 and clothed with delicate ciliated setae. Inner ramus of 1st pair of natatory legs 

 uniarticulate, that of the other pairs biarticulate ; terminal joint of outer ramus 

 in the latter pairs with only 2 spines outside, apical spine finely denticulate on 

 the outer edge. Last pair of legs in female 4-articulate, penultimate joint pro- 

 duced inside to a strong unguiform process, last joint very small, with 2 unequal 

 spines on the tip; those in male rather large and less asymmetrical than in 

 Temora, both legs of nearly same size, 4-articulate, and more or less incurved, 

 terminal joint of right leg claw-shaped, that of left spatulate at the end. Ovisac 

 present in female. 



Remarks.' The species of this genus were formerly referred to Temora; 

 but in the year 1881 Glaus established a new genus, Temorella, for their reception. 

 In the same year, and at a somewhat earlier date, Dr. Giesbrecht had proposed 

 another name, viz., Eurytemora, and though this name was merely used to desig- 

 nate a subgenus of Temora, it has, on account of its earlier date, been preferred 



