5 GEORGE V. SESSIONAL PAPER No. 39b A. 1915 



IV. 



A NEW CAPRELLID FROM THE BAY OF FUNDY. 



By a. G. Huntsman, B.A., M.B., Biological Department, 

 University of Toronto. 



{Plates V and 77.) 



In the summer of 1912 at the Biological Station, St. Andrews, New Brunswick, 

 an attempt was made to collect large numbers of the smaller Crustacea by attaching 

 to the dredge a bag of sacking in place of the ordinary net bag. Among other things 

 two specimens of an interesting new species of Caprellid were obtained, one a male 

 and the other a female. Both were obtained on muddy bottom in shallow water,, 

 the one in Oak Bay and the other near Niger Reef. A habitat on muddy bottom 

 has been given by Sars (1895, p. 656) for an European Caprellid, PariamhuS 

 typicus, which has also been found upon starfish. 



The rudimentary condition of the legs on the fifth peraeal segment attracted 

 my attention. As in the genus Pariambus the legs on that segment are rudimen- 

 tary, I at first thought that I had a species of that genus. Investigation has 

 shown that it does not belong to that genus and in fact it will not fit into any of 

 the current genera. Mayer's admirable monographs have made possible a ready 

 comparison with the known genera. 



Almost every character possessed by the new species is to be found in one or 

 other of the known genera, but the combination it shows has not been observed 

 up to the present. The most striking features are, — the presence of two joints 

 in each of the 1st and 2nd pairs of pereiopods, three joints in the 3rd pair, mandi- 

 bular palp three-jointed, its terminal joint with a single bristle, abdomen of female 

 with two pairs of spines (representing legs?) and abdomen of male with a pair of 

 rudimentary legs and a pair of large spines behind these, representing another 

 pair. 



In determining the affinities of this form, there are many possible choices 

 and I cannot see that one is more probable than another. 



The third pair of pereiopods are remarkably similar to those figured by Mayer 

 (1903, t. VII, f. 45) for Piperella grata. The maxillipeds are almost identical with 

 those of Triantella solitaria (Mayer, 1903, t. IX, f. 36). The mandibular palp 

 is in all essentials identical with that of Protomima denticvlata (Mayer, 1903, t. 

 IX, f. 6). The condition of the first and second pereiopods is similar to that in 

 most of the species where the number of the joints is reduced to one, two or three, 

 that is, the terminal joint has three bristles, the middle one being feathered. 



The condition in the abdomen of the male may be peculiar, not with respect 

 to the amount of reduction of the appendages, for similar conditions are known, but 



