Sept. 1899.] Banks: Smynthurid^ of Long Island, N. Y. 195 



3 — Wholly black (except between eyes) legs jet black -, nigripes. 



Not wholly black, legs paler 4 



4 — Legs pale, with black marks, no silvexy marks on sides of abdomen sylvestris. 



Legs^^without dark marks 5 



5 — Some^silvery spots on sides of abdomen, legs pale argenteornatus. 



No silvery spots 6 



6 — A pale area above on dorsum, legs pale dorsalis. 



No pale area above, legs brown fraternus, 



7 — Body furnished with clavate hairs above clavatus. 



Only simple hairs on body 8 



8 — A horn or spine each side near anal tubercle ; pale, marked with black. 



macgillivrayi. 



No such horn or spine 9 



9 — Black, with pale between eyes hortensis. 



Not black 10 



10 — White or yellowish, with dark antennce arvalis. 



Not all pale, 'marked with dark stripes on dorsum of abdomen elegans. 



Smynthurus spinatus Mac Gill. 



A few specimens taken on stagnant water. 

 Smynthurus nigripes, sp. nov. 



Black ; head black, paler between eyes ; basal joint of antennae blackish, rest 

 pale, fourth a trifle darker ; abdomen black ^ove and below ; legs black, except pale 

 claws ; furcula black, except pale mucrones. Head broad, large ; antennae with 

 basal joint short, second twice as long, third scarcely one-fourth longer than second, 

 slightly curved, and above at curve is a stiff bristle, fourth longer than rest of an- 

 tennce, slightly curved, with about 16 or 18 annulations ; abdomen broader behind 

 than in front, sub-truncate behind, anal tubercle large ; furcula moderate, denies 

 three and one-half times as long as broad at base, below with some hairs, mucrones 

 moderate, fine, slender distinctly serrate below ; abdomen with many long pale hairs 

 above. Length, 1.4 mm. 



In woods on .otten logs, Sea Cliff, N. Y. Known by its uniform 

 black color. 



Smynthurus sylvestris, sp. nov. 



Pale ; head often darker on sides, and some dark spots in front, and many be- 

 tween eyes, and a row along occipital margin ; antennae pale, basal joint darker ; legs 

 pale, a dark band or mark on femora and three on tibire, one at base, one at middle, 

 and one befop tip ; abdomen thickly mottled with black, brown, and purplish mark- 

 ings above, becoming most dense on the lower sides, a rather large black subm,edian 

 spot each sid^ behind middle ; anal tubercle above with a median black spot ; beneath 

 abdomen is pale, with a few purplish blotches each side; furcula pale, dentes darker 

 on base. Antennae of moderate length, basal joint a litde longer than broad, second 

 twice as long as first, third once and one-half as long as second, fourth nearly as long 

 as the rest together, with about 18 annulations ; abdomen rather long, hairy above ; 



