A NEW CAPRELLID FROM THE BAY OF FUNDY 41 



SESSIONAL PAPER No. 39b 



Superior antennae one-third length of body in male, somewhat less in female. 

 First joint of peduncle slightly shorter than second, third about half as long as 

 second. Flagellum eight-jointed in male and four-jointed in female. 



Inferior antennae about four-fifths the length of superior. First two joints 

 subequal, together somewhat less than third joint. Fourth joint slightly longer 

 than third. 



Merus and carpus of anterior gnathopoda scarcely produced, setigerous. 

 Propodus narrowly ovate, three groups of bristles on dorsal margin, minutely 

 and evenly denticulate on palmar margin. Dactyl curved, several long sharp 

 teeth along inner edge, denticulate between the teeth. 



Posterior gnathopoda of male, — palm of propodus notched beyond middle, 

 with a strong tooth just behind notch, and a bristle on each side of tooth, 

 without serrations except near proximal end and with a prominent bifid spine at 

 proximal end; dactyl long, sickle-shaped, scarcely serrate. In female, the palm 

 of propodus has a smooth sinuate margin and at the proximal end a prominent 

 process bearing a bifid spine; dactyl as in male. 



Anterior branchiae about twice as long as posterior branchiae. 



First, second and third pereiopods as described above for the genus, similar 

 in the two sexes. 



Fourth and fifth pereiopods very slender. Propodus slightly exceeding the 

 carpus in leng-th. Dactyl very long and slender. 



* Habitat. In from 5 to 10 fathoms on muddy bottom. St. Croix River, New 

 Brunswick. 



Literature. 



1903. Mayer, P. Die Caprellidae der Siboga-Expedition. Siboga Expeditie, 

 Monographie XXXIV. 



1895. Sars, G. O. The Crustacea of Norway. Vol. I. Amphipoda. Christiania. 



EXPLANATION OF PLATES. 



All the figures are of Mayerella limicola. 



Plate V. 



Fig. 1.— Female. X 27. 



Fig. 2. — Left first maxilla of male, anterior view. X 250. 

 Fig. 3. — Left mandible of male somewhat crushed, medial view. X 200. 

 Fig. 4. — Right maxilliped of male, posterior view. X 375. 



Fig. 5. — Head of male. Some of the appendages of the mouth have been removed and the 

 remainder are displaced. X 45. 



*In the s umm er of 1913 numerous specimens have been found at several localities in the 

 Bay of Fundy, in depths ranging up to 50 fathoms and on muddy sand bottom. 



