OF WASHINGTON, VOLUME XIV, 1912. 99 



From peach buds at West Chester, Pennsylvania. They 

 destroy the terminal peach buds and are thus a serious menace 

 to peach culture. 



Phyllocoptes amygdalina, new species. 



Body short and thick, about two and one-half times as long as broad, 

 broadest at end of the cephalothorax; a hair each side on cephalothorax 

 in front, and a bristle behind, surface with four nearly longitudinal ridges 

 toward middle, and less distinct one on the sides; legs rather slender; 

 leg I with two bristles on penultinate joint, leg II with but one bristle 

 (the upper) on this joint. Venter with six broad rings before telson; a 

 pair of bristles just behind the vulva, a pair of very long ones farther 

 back and outward, another pair near the middle, and a pair toward tip; 

 a pair of very long bristles from above the telson, and three short ones on 

 each side; a long bristle on coxa of leg II, and the next joint bears a small 

 one. The body above shows about 35 rings; below they are fine and close 

 together; the vulva is emarginate in the middle behind. Length 0.18 mm. 



Taken from the tender leaves of the ends of twigs of Atnyg- 

 daridiana by Mr. E. W. Rust at Whittier, California, 

 September 29. It distorts, discolors, and curls the leaves of 

 this peach. 



OTOBIUS, new genus. 



I propose this new name for the Ornithodoros tnegnini 

 Duges. The indistinct mouthparts and bristly body distin- 

 guish it from Ornithodoros; its life habits are also distinct. 



EXPLANATION OF PLATES I AND II. 



1. Tenuipalpiis inornatits. 



2. Histiogaster xylophaga, tarsus I, 



.">. Histiogaster xylophaga, vulva, tarsus IV. 



4. Macrocheles canadeusis, leg II. 



."). Tarsonenius waitei, legs I and II. 



G. Tarsotomus erraticus, palpus, and two hairs. 



7. Histiogaster xylophaga. 



8. Tettuipalpus cardinal. 



'.). Tetranychris longipes, palpus, claw, leg I. 



10. Phyllocoptes amygdalina, cephalothorax, and telson. 



1 1 . Erythrceus arvensis, cephalothorax, tarsus I, palpus. 



12. Phyllocoptes amygdalina, tarsus I. 



13. Macrocheles canadensis, leg I, palpus, and hair. 



14. Tarsonemus itaitei, hind leg of male. 



15. Tetranychus pratensis, leg I, palpus, claws. 



16. Tarsonenius waitei, female, venter. 



