in WASHINGTON, VOLUME XII, lull). 



Gamasus predator, new species. 



Male. Pale yellowish. Body elongate pyriform, nearly twice as long 

 as broad, dorsal shield entire, nearly covering body, leaving only a nar- 

 row hind border; shield witli many line, rather short hairs; epistome 

 rather large, with three equal apical teeth, and a smaller one each side. 

 Legs long and slender, hairy, tarsus I as long as tibia, tarsus IV nearly 

 twice as long as tibia; leg II greatly enlarged and armed with projec- 

 tions as in the figure. 



Length, 1 mm. 



Falls Church, Virginia. 



Macrocheles helvina, new species. 



Color pale yellowish. Body not twice as long as broad, narrowed 

 near front, and constricted over coxa- II, broadest much behind the 

 middle, clorsum with many very prominent clavate scale-like hairs, a 

 rather more prominent one at each humerus, and a pair in front near 

 middle. Venter without prominent hairs or bristles; legs not very long, 

 clothed with clavate hairs and short spines; tarsus I plainly longer than 

 the tibia, tarsus IV nearly twice as long as tibia; leg II heavier than 

 the other pairs, but not armed. 



Length, 0.8 mm. 

 Falls Church, Virginia. 



Differs from M. tinvslui in having many clavate hairs on 

 cephalic part of dorsum. 



Laelaps longitarsus, new species. 



Shield dark yellow, hind margin of body white, legs pale yellowish. 

 Shield covering most of the dorsum, pointed behind, covered with many 

 short, fine hairs, and in front with two stouter bristles each side; margin 

 of dorsum with many tine, long hairs. Legs slender, the tarsi long, es- 

 pecially the hin'd tarsus; all joints hairy. Ventral shield narrow in front 

 between the coxa', broad and broadly rounded behind; anal shield 

 broader in front than behind. 



Length, 1 mm. 



Taken from a mole's nest at Falls Church, Virginia, in 

 December. 



Pteroptus echinipes, new species. 



Body once and three-fourths as long as broad, broadest between legs 

 II and III but not angled. Dorsum without hairs, except a pair of 

 small ones in front, one at each humerus, and two longer ones close to- 

 gether each side near the tip. Legs very heavy and with long, still 

 bristles, those on the basal joints much longer than the joints and ex- 

 tending backward over the body Body of female much broader behind. 



Length, 1 mm. 



From Motis /uri/'n^n^, at Homer, New York. 



