1928] A New Gall Mite on Prunus maritima Wang. 
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other across the median line of the shield. Legs long and slender; 
tarsus and tibia of equal length; feathered claw four-rayed and 
in the second pair of legs exceeded in length by the claw bristle. 
Sternum bifurcate with thoracic setae II very near its outcurving 
ridges; thoracic setae I, the shortest of the thoracic setae, is well 
forward and anterior to the plane of the anterior end of the 
sternum; thoracic setae III is the longest of the thoracic setae 
and arises from large tubercles at the base of the coxae of the 
second pair of legs. Abdominal striae 65-75 in number with fine 
tuberculation often limited to the ventrum; last 5 striae near 
Fig. 1. Eriophyes maritima n. sp. on Prunus maritima : a, lateral view; b, ventral view of 
thorax. 
the telson without tubercles but with ventral longitudinal stria- 
tions. Lateral setae posterior to the plane of the epigynium and 
the same length as ventral setae I; ventral setae II, the shortest 
and most median of the ventral setae, as long as the dorsal setae; 
ventral setae III the longest and stoutest of the ventral setae; the 
genital setae about twice as long as the second pair of thoracic 
setae; caudal setae almost half the length of the body; accessory 
setae acicular and not half as long as ventral setae II. Female, 
280x 70ju. Described from specimens killed and mounted in 
aceto-carmine; slides also prepared with celloidin method given 
by Ahmed Hassan (1928), from material collected at Woods 
Hole, July 2, 1928. 
Measurements of the bristles and setae of Eriophyes mari- 
tima'. Feathered claw 9m, claw bristle 1 9m, 2 10m, outer setae of 
