600 



having the inferior corner produced to a digitiform projecting process, against 

 which the strong dactylus impinges, when closed. Anterior pairs of pereiopoda 

 short and stout, with the basal joint somewhat expanded, and equalling in 

 length the remaining part of the leg. The 3 posterior pairs of pereiopoda 

 of moderate size, and slightly increasing in length, basal joint oval in form, 

 with the infero-posteal corner somewhat produced. Last pair of uropoda but 

 slightly extending beyond the others, basal part having at the tip a trans- 

 verse row of spines and a fascicle of slender bristles, rami conically tapering, 

 and each tipped with a short spine, the outer one having also a small 

 lateral spinule, the inner one quite smooth, but distinctly hooked at the tip. 

 Telson about as long as it is broad at the base, outer part narrowed, and 

 having on either side of the angularly produced tip a small dentiform pro- 

 jection, inside which is attached a slender spine. Body of very dark colour, 

 being variegated with a bistre-brown pigment, partly in the form of broad 

 bands across the segments, and also present on the antennae and legs. Length 

 of adult female 7 mm, of male 9 mm. 



Remarks. - - As above mentioned, Boeck has identified this form with 

 Podoct.rns variegatus of Leach, and most of the subsequent authors have 

 followed him in this view. But there cannot be any doubt that such an 

 identification is quite erroneous. For the latter form, according to the descrip- 

 tion and figure given by Sp. Bate, has the flagella of both pairs of antennas 

 multiarticulate, and the accessory appendage of the superior ones distinctly 

 developed. Moreover the inner ramus of the last pair of uropoda is described 

 and figured as terminating in 3 strong hooks, and the pigment of the body 

 is stated to be red, not brown. Sp. Bate describes both forms separately, 

 though regarding them as nearly allied. They, however, in reality belong to 

 2 different genera, P. variegatus being a true Podocems, whereas the present 

 form constitutes the type of a separate genus. It is easily recognized by its 

 thick and stout body, and the densely hirsute antennae, which latter character 

 gave rise to the specific name proposed by Rathke. 



Occurrence. I have met with this form in a few localities on the 

 south coast of Norway in comparatively shallow water among grass. Accor- 

 ding to Boeck, it also occurs off the west coast of Norway, and even up to 

 Finmark. 



Dinirilnition. British Isles (Sp. Bate), Bohuslan (Bruzelius), Kattegat 

 (Meinert), Mediterranean (Heller). 



