Phyllopod Crustacea. 335 



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

 longer than broad, tapering to the acute, slightly excurved 

 point. Antennas slender, elongated, reaching beyond the first 

 articulation of the claspers ; terminal 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 seta, 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, subcylindrical towards the 

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

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

 triangular, sharp tooth, sometimes showing a minute spine. 

 This pouch is generally filled with numerous large brownish 



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

 translucent, the males usually lighter, greenish white, the 

 intestines generally showing through as a dark reddish or 

 greenish median line ; eyes very dark brown or black ; ovaries 

 often whitish, along each side of the abdomen. 



An adult male gives the following measurements : — 



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

 length of eye-stalks "62 ; length of first joint of the clasjDcrs "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 setee "70. 



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



Artemia monica^ Verrill, sp. nov. 



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

 lai-ger and stouter. The largest female is 13 millim. ("SI inch) 

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

 branchial feet in their natural, partly extended position. The 

 largest male is 11 "5 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, more triangular, 

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

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

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

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

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

 articulation the outer edge of the joint projects as a distinct 



