60 

 2. &g& tridens, Leach. 



(Pi. XXV, fig. 1.) 

 jEga tridins, Leach, Trans. Linn. Soc. Vol. XI, p. 370. 



Specific Characters. Pody somewhat more elongated than in the preced- 

 ing species, being nearly 2 and a half times as long as it is broad. Cephalon 

 rather broad in proportion to its length, and slightly produced in front. Meso- 

 some moderately convex above, and quite smooth, though having the transverse 

 lines of the 4 posterior segments very distinctly marked. Metasome rather broad, 

 with projecting epimera; terminal segment subtriangular, with the tip bi-sinuate, 

 or projecting in 3 obtuse dentiform projections, dorsal face with 3 obtuse carinse, 

 the median one rather narrow, the other 2 gradually widening in front. Eyes, an- 

 tenna?, and legs nearly as in ^E. psora. Uropoda with the inner plate obliquely 

 truncated at the tip, and devoid of any emargination outside. Length 38 mm. 



Remarks. This form, established by Leach, is nearly allied to the pre- 

 ceding species, though easily distinguishable by the shape and sculpturing of the 

 terminal segment of the metasome, and by the absence of a sinus outside the inner 

 plate of the uropoda. It is also of a somewhat more oblong form than the 

 said species. 



Occurrence. Two specimens of this form are preserved in our University 

 Museum, having been taken in the Christiania Fjord from the skin of the com- 

 mon cod. It has also been taken occasionally at Bergen and at Christiansund, but 

 seems, on the whole, to be very rare. I have not myself observed it in a 

 living state. 



Distribution. British Isles (Leach), Faroe Islands (Schodte & Meinert). 



3. vEga Stromii, Ltttken. 



(PI. XXV, fig. 2.) 

 Stfilnm, Liitken, Vid. Medd. Nat. For. Kjobenhavn 1858, p. 68, PI. I. A, fig.s 68. 



Syn: ^Eya monophthalma, var., Johnst. 

 bicarinata, Rathke (not Leach). 



ti}i<'cific Characters. Body oblong oval, more than 2 and a half times as 

 long as it is broad, and rather convex above. Cephalon moderately broad, slightly 

 produced in front. Mesosome with the dorsal face smooth, transverse lines of 

 tlic 4 posterior segments well defined. Terminal segment of metasome narrowly 

 truncated at the tip, with the posterior edge very slightly emarginated, dorsal 

 face with 2 rather slight and obtuse carinse gradually disappearing in front, edges 

 smooth, finely ciliated. Eyes very large, meeting above in the middle, along a 



