455 



pairs successively increasing in length, and having the basal joint oblong 

 oval in form, with the posterior edge quite smooth, that of last pair, as 

 usual, much the largest. Last pair of uropoda with the basal part of 

 moderate size, rami about twice its length, and edged with small spinules 

 only. Telson oval quadrangular in form, somewhat hollowed above, and 

 having the edges quite smooth, tip transversely truncated, or very slightly 

 emarginated in the middle. Body pellucid, with a yellowish tinge, some of 

 the segments having across them a more or less distinctly defined band of 

 an orange hue; ova in the marsupial pouch pale violet. Length of adult 

 female 8 mm. 



Remarks. This form was described by Boeck from a single, some- 

 what incomplete specimen, which may be the cause of some strange errors 

 involved in his description. Thus he speaks of a third dorsal eye, which in 

 reality does not exist, and the superior antennae are said to be much more 

 elongated than the inferior, whereas the reverse is the case. As, moreover, 

 no figures were reproduced, I have long been in doubt about the determination 

 of this form. Having however recently found in the collections of Boeck 

 his type specimen, I have convinced myself about the identity of the form 

 here described with his species. As is the case with most of the forms 

 belonging to this family, it is very brittle, and it is therefore seldom that 

 a specimen is taken quite uninjured. 



Occurrence. The species would seem to be very rare, and only to 



be found in considerable depths. The specimen described by Boeck was 

 taken in the inner part of the Hardangerfjord, at Utne, from a depth of 

 300 to 500 fathoms. I have myself found it quite solitary in the following 

 places: at Sunde, outer part of the Hardangerfjord, in the Trondhjemsfjord 

 at Vennses, at Apelvser, Namdal, and at Kvale, on the Nordland coast. Out 

 of Norway it has not yet been recorded. 



Gen. 7. Amphithopsis, Boeck, 1870. 



Body evenly vaulted above and very tumid in its anterior part, with 

 the coxal plates spread out laterally. Urosome unusually prolonged. Cephalon 

 not very large, with a small rostral projection, and having the postantennal 

 corners nearly obsolete. Eyes distinct. Antennae exceedingly elongated and 

 slender, nearly equal in length, the superior ones with a distinct, though 

 very small accessory appendage. Buccal area not much projecting. Anterior 

 lip of the usual rounded form; posterior lip without any inner lobes. Mandibles 



