December, ’ 18] 
SCIENTIFIC NOTES 
481 
The upper seed in one or more of the carpels or bolls on the plants was eaten out. 
In cotton fallen on the ground, all seeds were damaged in this way. It was esti¬ 
mated that 10 per cent or more of the seed were thus destroyed. Small fragments of 
hulls which become embedded in the lint surrounding the seed, and which can not 
be ginned out, will cause a marked reduction in its grade. 
The damaged bolls are very conspicuous. The hollow empty half hulls of the 
seeds show up dark against the lint. Particles of the seed content and hull spread 
about on and among the surrounding lint give it a charred appearance. 
O. I. Snapp, 
E. W. Stafford. 
Sugar-Cane Borer (Diatrcea saccharalis ). Early stages. The larva and pupa of 
this species show the key characters of the Galleriinae rather than Crambinse in Frack- 
er’s and Miss Mosher’s keys. (Fracker, S. B., Ill. Biol. Mon. II: 1, p. 87; Mosher, E. 
Bull. Ill. St. Lab. N. H. XII: 2, p. 72.) They may be distinguished from the 
Galleriinae as follows: In the larva setae iv and v (kappa and eta of Fracker) are almost 
vertically placed on their common tubercle, and the hooks on the inner side of the 
prolegs are also of three lengths. The pupa has the short tongue and rudimentary 
pilifer of the Galleriinae, but is easily separated by the slender form, suited to a boring 
species that pupates in its burrow, and by the body sculpture, which is of sharp raised 
reticulations, rising here and there into pyramidal points. The larva may be dis¬ 
tinguished from that of Chilo, which has similar habits, by the complete circle of 
hooks on the prolegs. The pupa of Chilo is unknown to me. 
W. T. M. Forbes, Ithaca , N. Y. 
Injury to Hogs Resulting from Cocoon Eating. The following article is an abstract 
of a paper published in the “Journal of the American Veterinary Medical Associa¬ 
tion,” by Dr. F. M. Hayes, Veterinary Surgeon of the University of California. Per¬ 
mission was kindly granted by Dr. Hayes for publishing same in the Journal of 
Economic Entomology so as to give greater publicity to this matter. 
In June, 1918, Dr. F. M. Hayes, Veterinary Surgeon of the University of California 
was called to investigate a disease of hogs which had been ranging in oak timber in 
one of the coast counties of California. He writes in part as follows: “. . . from 
the two ranches reporting trouble thirty hogs out of eighty-two had died and the 
remainder of the herds were showing symptoms of disorder. 
“The most prominent symptom noted was defacetion of long strings of feces. 
This was accompanied by severe straining which resulted in many cases in leaving a 
trail of several inches of feces still attached to the hog. An autopsy performed upon 
a pig showing symptoms of abdominal distress revealed an undigested mass contin¬ 
uous from the stomach to the anus. A dissection of this material showed it to be 
largely composed of a fine, wool-like fiber enmeshing bits of grass, barley hulls, and 
small fragments of a dark brown material. . . . 
“On examining the range, the cocoons of tent caterpillars were found in great abun¬ 
dance scattered about on low plants and on oak leaves. Some of the oaks were prac¬ 
tically defoliated, many caterpillars still being in evidence. The owner stated that 
this was the severest outbreak of caterpillars he had seen in ten years’ residence there. 
“On examination of the cocoon, the fiber was found to be identical with that found 
in the intestines, the dark brown fragments in the mass mentioned above proved to 
be masticated pupae. Cocoons when thrown to the hogs were consumed readily, 
especially by the younger animals showing that they had acquired a decided appetite 
for this type of food. 
“No treatment was advised other than to keep the hogs away from the infested 
