1883.] Entomology. 665 
tile hairs certain peculiar clavate pale hairs are placed on the 
apex of the labium, which appear from observations to be analo- 
gous to the olfactory hairs of the inner pair of antennz of Crus- 
tacea, and, as they carry a minute opening at their ends, must be 
considered as either gustatory or olfactory organs. 
Like that of butterflies, the sucking-tube of the Hemiptera is 
made up exclusively of the two maxilla, which unite in sucha 
way as to form a double cylinder, the upper division of which car- 
ries the food, the lower the salivary secretion. The mandibles lie 
by the side of the maxilla, and can move about on the tube. e 
end of the labium is provided with terminal nervous organs. In 
the proboscis of Diptera the sucking tube is formed mainly by the 
labium, which consists of a demi-canal, closed below partly by 
the mandibles which are connected with it by a groove-and-ridge 
joint and partly by the hypopharynx, which runs below the man- 
dibles, carrying the salivary canal; on each side below the hypo- 
pharynx lie the maxille. 
Tue “Pine Mora or Nantucket.’—The author, Mr. S. H. 
Scudder, sends us, under this title,a neatly printed pamphlet of 
20 pp., with a colored plate, published by the Massachusetts So- 
ciety for the Promotion of Agriculture. It embraces an account 
of the injury to the pines (Pinus rigida) on the island of Nan- 
tucket by a Tortricid, Retina frustrana, n. sp., with full descrip- 
tive details and remedial suggestions, and ends with an appendix 
(Pinus inops) around Washington, as published in the report of 
the Entomologist, Department of Agriculture, for 1879. Mr. 
Scudder is inclined to doubt the specific identity of the insect work- 
ing on Pinus inops and P. rigida in other parts of the country with 
his Retinia frustrana, but without very cogent reason. After study 
and comparisons we agree with Fernald and Comstock. This fact 
Practical conclusion of the pamphlet, which is that dy breaking 
or cutting from every pine tree on the island every affected shoot the 
insect might be virtually exterminated—a conclusion which pre- 
Supposes either that the species is confined to the island or that, 
ing more widely distributed, the parent moth could not or would 
not fly from adjacent land. Mr. Scudder concludes that there are 
two annual generations. While two have been plainly made out 
for the latitude of Washington, it is yet doubtful whether more than 
one occurs, as a rule, so far north as Nantucket. The irregularity 
in development is apt to mislead, and in studying Dapsilia ru- 
a Hübn, on Long Island, some years since, we were forced to 
Consider it monogenentic notwithstanding the appearance of the 
Moths in early spring. 
The popular name chosen by the author is rather unfortunate. 
Popular names for injurious larve are most appropriate when 
