401 



by the very strongly-developed urosome, all the segments of which are produced 

 dorsally to spiniform projections, by the rather deviating structure of the 

 gnathopoda, the considerable development of the accessory appendage of the 

 superior antennae, and finally, by the comparatively short and stout pereiopoda. 

 The presence of accessory eyes is another peculiar feature of this form, 

 somewhat reminding of the Ampetiscidce. 



Occurrence. - Off the coast of Finmark this form is not rarely found, 

 in moderate depths ranging from 20 to 60 fathoms. It also occurs occasionally 

 off the west coast of Norway (Christiansund), and I have met with it even 

 as far south as at Meerdo, south of Arendal. 



Distribution. Greenland (Goes), British Isles (Norman), Kattegat 



(Meinert). 



Fam. 16. Pardaliscidae. 



Body, as a rule, rather slender, but not compressed, with the meso- 

 some generally well developed, and the integuments thin and flexible. Cephalon 

 large or of middle size, with a very small rostral projection. Coxal plates 

 comparatively small, 4th pair not differing in shape from the preceding ones, 

 5th pair with the anterior lobe deeper than the posterior. Eyes present or 

 obsolete, never coalescent. Antennae more or less slender, the superior ones 

 furnished with an accessory appendage, peculiarly modified in the male. 

 Buccal area greatly projecting, and having the oral parts strongly developed. 

 Mandibles without any trace of a molar expansion. Gnathopoda subequal in 

 structure, now rather small and simple, now powerfully developed and 

 imperfectly subcheliform. The 2 anterior pairs of pereiopoda more or less 

 differing from the 3 posterior pairs, which are rather elongated, with the 

 basal joint not very much expanded. Last pair of uropoda comparatively 

 large, with the rami more or less foliaceous. Telson of moderate size, and 

 deeply cleft. Sexual difference sometimes rather prominent. 



Remarks. As pointed out by Boeck, this family exhibits some 



points of affinity to the Syrrhoidce, especially as regards the structure of the 

 antennae, and the manner in which they are modified in the male, partly also 

 in the shape of the gnathopoda. It differs, however, very markedly in the 

 structure of the oral parts, particulary that of the mandibles, and also in 

 the general habitus, which somewhat resembles that of the Gammaridce. The 

 family comprises as yet but 4 genera, one of which is now for the first 

 time established. 



