Phyllopod Crustacea. 395 



there is a slight but distinct angle ; last joint triangular, 

 longer than broad, tapering to the acute, slightly excurved 

 })oint. Anteiniaj slender, elongated, reaching beyond tlie first 

 articulation of the claspers ; termhial set;e minute. Abdomen 

 slender, smooth ; the terminal lobes small, longer than broad, 

 broadly rounded at the end, slightly constricted at the base 

 inside, each bearing usually seven or nine plumose setje, the 

 central ones much the longest. Ovigerous pouch of the female, 

 when seen from below, flask-shaped, the neck extending back- 

 ward and downward, short, thick, subcylindrieal towards the 

 end, the body of the " flask " short, thick, swollen laterally, 

 broader than long, the sides terminating outwardly in a small, 

 triangular, sliai'p tooth, sometimes showing a minute spine. 

 This pouch is generally filled with numerous large brownish 

 eggs. 



Colour generally reddish, flesh-colour, or light greenish, 

 translucent, the males usually lighter, greenish Avhite, the 

 intestines generally showing through as a dark reddish or 

 greenish median line ; eyes very dark bro^\ai or black ; ovaries 

 often whitish, along each side of the abdomen. 



An adult male gives the following measui-ements : — 



Distance between eyes 1*81 millim. ; breadth of head '76 ; 

 length of eye-stalks *62 ; length of first joint of the claspers "91, 

 its breadth "72, breadth of its appendage "18 ; length of second 

 and third joints from outer edge of first articulation to the tip 

 2'48, greatest breadth '86, breadth at last articulation "72 ; 

 length of last joint 1'05 ; length of last joint of abdomen, ex- 

 clusive of appendages, I'OO, its breadth "31 ; length of pre- 

 ceding joint -42, its breadth "37 ; length of terminal appen- 

 dages "21, breadth 0'96 ; length of longest sette "70. 



Near New Haven, in tubs of water from salt marsh. 



Artemia momca, Verrill, sp. nov. 

 Form similar to that of the preceding species, but a little 

 larger and stouter. The largest female is 13 millim. ('51 inch) 

 long, the abdomen being 6 millim. ; and 5 millim. across the 

 branchial feet in their natural, partly extended position. The 

 largest male is ll'o millim. (•45 inch) long, the abdomen being 

 6 millim. The claspers of the male are relatively stouter, the 

 hook or outer two joints being much broader, mure triangular, 

 and less elongated. The inner edge of the first joint, as seen 

 from below, is regularly convex, bearing the apjjendage on its 

 most convex part and not so near the base as in A. gracilis^ 

 the distance being about twice the breadth of the organ, which 

 is about as broad as long and regularly roumled. At the 

 articulation the outer edge of the joint projects as a distinct 



