39 



still more in the rather different armature of the anterior edges of the 

 carapace. In the structure of the 2 anterior pairs of legs also, well-marked dif- 

 ferences are found to exist. I have not yet met with fully adult males of this 

 species; hut even in young specimens the carapace has become somewhat 

 transformed, both the marginal denticles and the sinus of the anterior edges 

 having been lost. 



(k'cttm'ure. I have found this form in 2 widely-distant localities of the 

 Norwegian coast, vi/., in the Christiania Fjord and off the Lofoten Islands. In 

 both places it only occurred in considerable depths, from 150 to 200 fathoms, 

 muddy bottom. Out of Norway, this form has not yet been recorded. 



Gen. 3. EudOrellOpSlS, G-. 0. Sars, 1882. 



Generic Characters. Body short and compact, club-shaped. Carapace of 

 a structure similar to that in Eudorella, the pseudorostral projection being obso- 

 lete, and the efferent branchial orifice placed dorsally in close approximation to 

 the frontal lobe. Tail comparatively short. Superior antennae strongly built, and 

 conspicuously geniculate, the geniculation, however, occurring between the 1st and 

 2nd peduncular joints, not, as in Eudorella, between the 2nd and 3rd, inferior 

 antennae in female very small, uniarticulate, with 2 very strong and densely hir- 

 sute setae. Oral parts as in the 2 preceding genera. Legs comparatively robust, 

 and densely setiferous. Uropoda likewise robust, with the outer ramus much 

 larger than the inner, and partly spinous. 



Remarks. This genus was proposed by the present author in the year 

 1882, to comprise the anomalous form recorded by Kr0yer as Leucon deformis, 

 which I at first had referred to the genus Eudorella. Indeed, this form agrees 

 more nearly with the latter genus than with Leucon, yet exhibits several well- 

 marked differences from any of these genera, both as regards the general form 

 of the body, and the structure of some of its appendages, especially the antennae 

 and uropoda. Besides the type species described below, another species has 

 been recorded by Prof. Sidn. Smith from the east coast of North America, as 

 E. Integra. 



