G ME, 0. A. SATCE ON A REMARKABLE 



Antenna (PI. 1. fig. 6). — The peduncle is slender compared with the peduncle of the 

 antennules, and the last peduncular joint but little stouter than the first articles of the 

 flagellum. The peduncle is formed of four joints, the first quite short and subquadrate, 

 the second about twice as long, the third as long as the first and second combined, and 

 the fourth rather more slender and a little shorter than the previous one. The 

 flagellum is long and slender, about twice the length of the peduncle and formed of 

 about 18 articles. 



In Anaspides there is a definite scale arising from the second peduncular joint, but in 

 the present species there is not even a vestige of one ; otherwise they are in close 

 agreement, 



The anterior lip (fig. 8) is thick and fleshy, curving evenly downwards without any 

 transverse ridge (epistome), the margin broadly and evenly rounded, and the tip furred 

 with short setae. 



The mandibles (figs. 10, 11, 11 a) agree closely with those of Anaspides, except that 

 there is no clearly defined sj)ine-row. The body is stout and supplied with a three- 

 jointed palp, the cutting-plate long, broad, and strongly curved between its lateral edges 

 (the curve of one side opposing the other in opposite directions); its distal margin 

 declines but very slightly inwards, and is divided into numerous strong acute teeth (six 

 on the left and five on the right hand side), and the inner lateral margin descends almost 

 at a right angle to join the basal part of the molar expansion. The molar expansion 

 is well developed and rises abruptly to form a rounded cushion-like ridge, thickly clothed, 

 in part upon the summit, and for some distance surrounding it, with long spiniform 

 setae ; the outer edge of the summit is raised a little to form a minute grinding-surface 

 studded with chitinoid papilla?, hidden by the surrounding setae. Between the cutting- 

 plate and the molar expansion there is no sign of any secondary cutting-plate nor 

 definite spine-row, but the setose cushion-like area united to the chitinoid extremity 

 may possibly have originated from one (fig. 11 a). 



The palp is three-jointed and directed forwards and inwards, so that the distal ends 

 almost meet in the mid axis, a little in front of the anterior lip. The first joint is 

 short and free from setse ; the second almost three times as long, with a row of about six 

 long feathered setye along the inferior margin of the distal half; the third is minute, 

 apically broadly rounded, and bearing several long feathered setae. 



Posterior lip (fig. 9). — This is formed of two membranaceous, narrow, ovoidal, widely 

 divergent lobes, connected together at the base, and the inner edges of the lobes, are 

 fringed with setae. 



Ths first maxilla (fig. 12) consists of two lobes : the outer or distal one bears a minute 

 one-jointed palp on the outer face, pointing distally (not reflected backwards as in the 

 Cumacea), and tipped with three very long sjjinules, feathered along their inner margins; 

 I he obliquely truncated summit of the lobe bears a double series of about ten strong 

 yellow spines, not toothed, as in Anaspides, but faintly feathered, and the inner face 

 curves outwards to form a small rounded expansion. The proximal or inner lobe is 

 short and narrow, being only half the width of the outer lobe, and the summit bears 



