134 Journal New York Entomological Society. ^^'°^- xxii. 



altitude 1,570 ft. It is allied to /. apocyni Felt and its related forms, 

 from which it may be readily separated by the yellowish orange body 

 and the structure of the genitalia. 



Male. — Length i mm. Antennse probably twice the length of the body, 

 thickly haired, pale straw ; fourteen segments, the fifth having the stems with a 

 length three and one-half and four and one-half times their diameters, respec- 

 tively ; fourth palpal segment with a length one-half greater than the third. 

 Body a somewhat variable yellowish or yellowish orange, the terminal clasp 

 segment of the genitalia apparently tipped with fuscous. Wings yellowish. 

 Halteres, coxae and femora basally pale yellowish, the distal portion of femora, 

 tibiae and tarsi mostly yellowish straw, the latter possibly indistinctly banded ; 

 claws simple, the pulvilli rudimentary. Genitalia; basal clasp segment moder- 

 ately stout ; terminal clasp segment long ; dorsal plate moderately long, broad, 

 triangularly emarginate, the lobes roundly truncate, the lateral angles being 

 slightly produced and sparsely setose ; ventral plate long, broad, broadly and 

 roundly emarginate, the lobes short, broad. 



Female. — Length 2 mm. Antennae as long as the body, sparsely haired, 

 whitish basally, light brown apically ; stems whitish transparent, the fifth with 

 a stem three-fourths the length of the cylindric basal enlargement, which latter 

 has a length two and one-half times its diameter. Palpi ; the first segment 

 with a length four times its diameter, the second a little longer, stouter, the 

 third one-fourth longer than the second, more slender, the fourth one-half 

 longer than the third, more slender. Body a uniform yellowish or yellowish 

 orange.. Wings, coxae, halteres and femora basally yellowish, the distal por- 

 tion of femora, tibiae and tarsi light brownish. Ovipositor short, the terminal 

 lobes broadly oval and thickly setose. Both sexes were taken together and are 

 probably cospecific. Type Cecid. i486. 



BIOLOGICAL NOTES CONCERNING DROSOPHILA 

 AMPELOPHILA. 



By Frank E. Lutz, 

 New York, N. Y. 



This little fruit-fly has been of unusual importance in the recent 

 study of evolution, especially of that phase of the study which deals 

 with inheritance. Not only have cases of simple Mcndelian char- 

 acters been conveniently studied by its aid but more complex ones 

 have been analyzed although some are not yet " explained." The 

 work of Morgan and his pupils with it has demonstrated beyond a 



