80 Kansas Academy of Science. 



this basis, the species ranked third in order of importance among the 

 different pests that infested the stock. Previous remarks concerning 

 conditions with regard to this insect at the time of the collection of the 

 infested material need not be repeated here. 



Development of stages in the sample evidently progressed without 

 interruption until June 12, the date of the second examination. This 

 course was indicated by the issuance of moths which came out into the 

 light under the glass tumbler on the cover of the jar containing the 

 grains. Although no specimen appeared later than May 9, further evi- 

 dence of breeding was afforded by the finding of a nearly grown larva 

 during the examination made on June 12. This larva was found wan- 

 dering freely among the grains, but on being isolated with similar rice, 

 it died within eight days thereafter. 



As one or two moths at a time had emerged in February and March, 

 these circumstances gave indication of a continuous breeding of the 

 species throughout the winter and cold weather of spring. However, 

 since the adults, like most other forms of insects that attack stored 

 products, naturally shun bright light, and consequently are not apt to 

 expose themselves in full number to open view, the observations relative 

 to the issue of the specimens from the sample grains have little value 

 towards denoting how much breeding had been carried on by the pest. 

 Then, judging by the spasmodic appearance of the moths at frequent 

 intervals, an overlapping of broods or generations seemed to have oc- 

 curred and hopelessly confused these phases of existence. On this ac- 

 count, no determinable record could be made respecting the time required 

 for the completion of a life cycle. All the particulars of the life history 

 necessarily remained to be worked out by isolated breeding tests. 



OVIPOSITION. 



Attempts to breed the species in isolation were begun on March 16, 

 1912, when five live moths taken during the examination of the sample 

 of infested stock on this date were confined in a tube with sterilized 

 rough rice grains. Owing to a delay in making observations, however, 

 neither the resulting deposition nor hatching of the eggs was known 

 to be effected until April 6, and then the empty egg-shells furnished 

 the only evidence of an issue of larvae. These shells presented a flattened 

 oval form and still retained a pinkish tint. They were attached in ir- 

 regular positions on the broad side of the grains, most of them having 

 been placed singly or apart from one another on the surface of the hull, 

 although some were found arranged in a small bunch or else in a short 

 row, with their edges overlapping slightly. In a few cases, as many as 

 five or six shells appeared on a grain, but generally the number per 

 grain ranged from one to three examples, 



DEVELOPMENT AND BEHAVIOR OF THE LARVA, 



No visible signs of infesting larvae, except for the presence of the 

 empty egg-shells, could be detected on any of the grains when they 

 were first inspected. Believing, however, that larvae had issued from 

 the eggs as was indicated by the shells, and then had penetrated in some 

 manner through the hull of separate grains, thus crawling out of sight 



