220 NATHAN BANKS. 



fiftli joint hut little sliorter than the second, nearly three times as long as joints 

 three plus four, not widened at tip, with four or five bristles each side and two 

 at tip. the outer one about two-thirds as long as the joint, the inner one shoiter. 

 The body bears bristles similar to B. cardinalis, except those on the abdomen are 

 shorter, and the one near the hind angles of the cephalothorax is much longer 

 than usual ; legs also with bristles, those on the fourth pair longest. 



Sea Cliff, N. Y. On the ground under boards and chips. 



Bdella. robiista. nov. sp. — Length 1.1 mm. Eed ; mandibles shorter than 

 the cephalothorax, which is as broad as long, with the sides convex ; there is but 

 one bristle above on the mandibles near the tip ; palpi short ; second joint about 

 one-half as long as the mandibles, and with a few bristles: the third and fourth 

 suheqiTal, as broad as long, the third with a bristle ; the fifth nearly twice as long 

 as the third plus fourth, not widened at tip, two bristles on each side and two at 

 tip, the outer one as long as the joint. The bristles on the abdomen and legs are 

 quite short. 



One specimen has a number of bhick spots above ; it seems related 

 to B. peregi'iiia, but has a much stouter body, with shorter mandibles 

 and palpi. 



Sea Cliff, N. Y. On the ground. 



Bdella marina Pack., Am. Nat. 1884, p. 828.— Length 2. mm. Red ; the 



mandibles are shorter than the cephalothorax, which is about as broad as long, 

 the sides in front are concave; the mandibles have several bristles above at base 

 and two or three nearer the tip. The second joint of palpus is about four-fifths 

 as long as the mandibles, and with several long bristles; the third joint is about 

 as long as broad, while the fourth is nearly twice as long as broad, both have 

 several bristles, one on the inuerside of the fourth is quite long; the fifth joint 

 is nearly twice as long as the third plus fourth, it has about eighteen bristles, 

 those near base are short, others near tip are quite long, the two on the tip not 

 over one-half the length of the joint, and barely longer than some on the sides 

 of the joint. The bristles on the body are very long and prominent. 



This species lives on the sea-shore between high- and low-water 

 marks. 



Sea Cliff, N. Y. ; New Jersey (Packard). 



Scirii!* quadripilis nov. sp. — Length .7 mm. Red; body broadest at 

 IKisterior edge of cephalothorax, tapering behind and before, the sides of the 

 cephalothorax concave in front; a pair of long bristles on the anterior edge, 

 nearly as long as the palpi, and a bristle at each posterior angle of the cephalo- 

 thorax nearly as long as the entire body. The first joint of palpus very short; 

 the second about twice as long as broad ; the third similar, witli a spine above 

 and a longer one below ; the fourth about the same length with a long spine at 

 base on the innerside, and one at tip nearly as long as the joint, usually a small 

 one near the middle; the fifth joint curved in the form of a claw with a short 

 spine a little befofe the middle, and a fine hair just before the tip. Some short 

 hairs on abdomen and legs, one or two long ones on tibia iv. 



Sea Cliff, N. Y. On ground, under stones and in moss. 

 7/1 ff ' 

 hC0. 



