307 



length of the peduncle, and composed of about 12 articulations. Inferior 

 antennae longer than the superior, last joint of the peduncle somewhat shorter, 

 and much narrower, than the penultimate one, flagellum about the length of 

 the peduncle. Anterior gnathopoda of moderate size, propodos oval in form, 

 about twice as long as it is broad, palm shorter than the hind margin, carpal 

 lobe scarcely extending to the palm of the propodos. Posterior gnathopoda 

 somewhat more slender, propodos oblong in form, more than twice as long as 

 it is broad, and slightly widening distally, palm much shorter than the hind 

 margin, carpal process not extending to the palm of the propodos. The 4 

 anterior pairs of pereiopoda rather strong, though somewhat less so than in 

 M. Kroyeri, dactylus attaining the length of the propodal joint, and lanceolate 

 in form. Last pair of pereiopoda slender and elongated, basal joint less broad 

 than in the above species, carpal joint about the length of the propodal one, 

 and longer than the 2 preceding joints combined, terminal joint extremely 

 slender and elongated. Telson oval quadrangular, tip transversely truncated. 

 Body, according to the statement of Mr. Schneider, semi-pellucid, whitish, 

 sometimes, in full-grown specimens, slightly variegated with dark brownish 

 pigment. Length of adult female 12 mm. 



Remarks. The specific name <longirostris, proposed by Goes, for 

 this form, is somewhat inappropriate, since the true rostrum in reality is very 

 small, the part so called by Goes being merely the frontal part of the cephalon. 

 It is nearly related to M. Kroyeri, but at once distinguishable from it by the 

 far less strongly built body, and especially by the greatly produced frontal 

 part of the cephalon. 



Occurrence. According to Boeck a single specimen of this form was 

 collected by the late Prof. Esmark off the Finmark coast. Mr. Schneider has 

 found it in the neighbourhood of Tromse, and during the Norwegian North 

 Atlantic Expedition a few specimens were collected in the Saltenfjord. 



Distribution. - Spitsbergen (Goes), Kattegat (Meinert). 



15. Monoculodes Packard!, Boeck. 



(PI. 109, fig. 1). 

 Monoculodes Packardi, Boeck, Crust, amph. bor. & arctica, p. 86. 



Body comparatively slender, especially in the male, with very thin 

 and pellucid integuments. Cephalon about the length of the first 3 segments 

 of mesosome combined, frontal part somewhat convex anteriorly and produced 

 to a very narrow and acute, slightly curved rostrum, which however does 

 not extend to the end of the basal joint of the superior antennae, lateral 



