219 



at the tip. Coxal plates very deep; 1st pair somewhat larger than in the 

 preceding species, and obliquely oval in form, anterior corner somewhat pro- 

 duced and bluntly pointed; 2nd pair obliquely truncated at the tip. distal 

 edge of this and the 2 succeeding pairs scarcely denticulated; 5th pair com- 

 paratively smaller and less oblique than in the type species. Last pair of 

 epimeral plates of metasome less produced at the lateral corners, and nearly 

 rectangular, without any dentiform projection. Eyes very small, rounded, 

 with imperfectly-developed visual elements, pigment light red, with a whitish 

 coating. Superior antennae nearly as in A. manuclens : inferior ones compa- 

 ratively shorter and stouter, not attainning the length of the superior. 

 Gnathopoda not nearly so powerful as in that species, and but slightly unequal, 

 propodos in both pairs scarcely longer than the 2 preceding joints combined, 

 and of regular triangular form, gradually expanded distally, and nearly trans- 

 versely truncated at the end, which does not form any projecting angle in 

 front of the dactylus, palm nearly straight, and somewhat irregularly denti- 

 culated, with a few small bristles, dactylus not very elongated, and finely 

 spinulose inside, carpal process of the posterior pair not reaching to the 

 palm. Pereiopoda almost exactly as in A. manudens. Last pair of uropoda, 

 on the other hand, much shorter, scarcely reaching beyond the 1st pair, basal 

 part but little longer than the rami, the latter simple, without any marginal 

 spinules. Telson much elongated, reaching beyond the basal part of the last 

 pair of uropoda, and gradually tapering from the base to the pointed tip. 

 Colour pale yellowish, with irregular light red patches extending down the 

 coxal plates. Length of adult female 4 mm. 



Remarks. This species, established by Boeck, was rather imper- 

 fectly, and partly incorrectly, described in the posthumous work of that author, 

 without any illustrating figures. Fortunately there is in our university collection 

 a specimen, though badly preserved, which was determined by Boeck as above, 

 and which has thus enabled me to identify his species with the form describ- 

 ed above. It may easily be distinguished from the type species by the 

 small, imperfectly-developed eyes, by the rather different structure of the 

 gnathopoda, and by the relative length of the telson and the last pair of 

 uropoda. 



Ocfurrence. Boeck records the species from three different localities 

 off the west coast of Norway, viz., Hvitings0, Mosterhavn in the Hardanger- 

 fjord, and Christiansund. I have besides met with it at Tjeto and Selsevik 

 off the Nordland coast. It is a true deep-water form, only occurring in 

 depths from 100 to 200 fathoms, especially \vhere the deep-sea corals grow. 



Distribution. - -? Cumbrse, British Isles (Robertson). 



