274 



REPORT OF COMMISSIONER OF FISH AND FISHERIES. [568] 



with a geniculation at the articulation of the fourth with the fifth seg 

 ment; terminal portion, corresponding to the flagellum, composed of 

 three closely articulated segments, besides a minute apical one; mandi 

 bles slender, without palpi; exposed portion of the maxillipeds formed 

 of only two segments; the basal one with a narrow, elongated portion, 

 which is abruptly narrowed at the articulation of the terminal segment, 

 and sends a slender process beneath it to the middle of its inner margin ; 

 the terminal segment much narrower than the basal, and tapering 

 toward the extremity; legs subequal, the posterior not shorter than 

 the others ; terminal segment of the abdomen produced between the 

 posterior caudal appendages, which are short and essentially as in the 

 allied genera. 



This genus differs from Seypliax most notably in the form of the max 

 illipeds, which in Scypliax have the terminal segment broad and serrately 

 lobed, while in our genus it is elongated, tapering, and has entire mar 

 gins. In Seyphax, also, the posterior pair of thoracic legs are much 

 smaller than the others, and weak ; the last segment of the abdomen is 

 truncated at the apex, and the articulations between the segments of 

 the terminal portion of the antenna} are much more complete than in our 

 species. The general form and appearance of the genera are the same, 

 and the known species agree remarkably in habits, the Scypliax, accord 

 ing to Dana, occurring on the beach of Parua Harbor, New Zealand, 

 and found in the sand by turning it over for the depth of a few inches* 



SCYPHACELLA ABENIGOLA Smith, sp. I10V. (p. 337.) 



Body elliptical; abdomen not abruptly narrower than the thorax; the 

 whole dorsal surface, except the extremity of the abdomen, covered with 

 small, depressed tubercles, which give rise to minute spiuules ; eyes 

 prominent, round ; antenna a little longer thaii the breadth of the body; 

 first and second segments short, equal ; third, fourth, and fifth succes 

 sively longer, the fifth being rather longer than the terminal portion, 

 w^hich is more slender than the fifth segment, tapers regularly to the 

 tip, and is composed of three successively much shorter segments, and 

 a very short, somewhat spiniform, but obtuse, terminal one; all the seg 

 ments, except the minute terminal one, scatteriugly beset with spinules} 

 legs beset with small spines ; the ischial, uteral, carpal, and propodal 

 segments subequal ; terminal x&amp;gt;rocess of the last segment of the abdo 

 men narrow, triangular, with the apex slightly rounded, and the dorsal 

 surface a little concave; posterior caudal appendages much shorter than 

 the abdomen; rami slightly unequal, the outer stout, spinulose, the inner 

 a little shorter and much more slender. 



Color, in life, nearly white, with chalky white spots and scattered, 

 blackish dots arranged irregularly. Eyes black. 



Length, 3-4 mm . v 



Found at Somers s and^Beesley s Points, on Great Egg Harbor, New 

 Jersey, in April, 1871, burrowing in the sand of the beaches, just above 



