24 BULLETIX 826, U. S. DEPARTMENT OF AGRICULTURE. 
Genus NEOPHYLLAPHIS Takahashi. 
1920. yeophyttaphis Takahashi, Can. Ent., v. 52, p. 20. 
Characters. — Cornicles slightly elevated. Antennae of six segments, with narrow, 
transverse sensoria. Fore wings with media twice branched, hind wings with both 
media and cubitus present. Cauda and anal plate rounded, cauda sometimes slightly 
constricted. Oviparous females winged and possessing annular sensoria. Forms wax 
secreting and living free on the plants. 
Type (monotypical). Neophyllaphis podocarpi Takahashi. 
Genus PHYLLAPHIS Koch. 
Plate TV, FF, GG. 
1857. PTiyllapUs Koch, Die Pflanzenlause Aphiden, p. 248. 
The well-known genus Phyll aphis Koch is represented by fagiLi., 
but as indicated under Tamalia has been made to include species of 
somewhat different structure. 
Characters. — Cornicles present as chitinized rings which are very slightly elevated on 
low conical bases. Antennae of six segments, long and slender, minutely setose, sen- 
soria narrowly oval. Fore wings with the media twice branched ; hind wings with both 
media and cubitus faintly indicated. Cauda knobbed, anal plate slightly divided. 
Forms living upon the foliage, sometimes producing a curling of the leaves. Males 
usually winged; oviparous form apterous, producing several eggs. 
Type (monotypical), Aphis fagi L, 
Genus TAMALIA n. gen. 
Plate IV, HH, II. 
The genus Tamalia Baker is erected for Pemphigus coweni Ckll., 
a species which has since been placed in Phyllaphis. It is, however, 
quite distinct from the type of the genus and undoubtedly represents 
a new genus. Mr. Theodore Pergande received this species, coweni, 
from California and made some notes on the material, thinking, how- 
ever, that it was a new species. He gave it a provisional name and 
the new generic name here used. This name, as far as our knowledge 
goes, never was published. Among the large number of new genera 
conceived by Pergande this is one of the few valid ones and his man- 
uscript name, therefore, is used here. 
Characters. — Cornicles present as mere flanges on low, broad, conical bases. Antenna? 
of six segments minutely setose and with narrow sensoria. Fore wings with media 
once branched, hind wings with both media and cubitus present. Cauda and anal 
plate both rounded. Abdominal wax plates present. 
Forms living in pseud ogalls. Sexes sometimes both winged, oviparous form pro- 
ducing several eggs. 
Type, Pemphigus coweni Ckll. 
Genus SHTVAPHIS Das. 
1918. Shivaphis Das, Mem. Ind. Mus., vol. 6, p. 215. 
The genus Shivaphis was erected with celti Das as type, and celti is 
evidently the species rcdescribed as ChromapMs celticolens by Essig. 1 
1 Essig, E. O., and Kuwana, S. I. Some Japanese Aphididip. In Troc. Cal. Acad. Sci., v. S, no. 3, 
p. 95, 1918. 
