File:The anatomy of the honey bee (1910) (18168089886).jpg

Title: The anatomy of the honey bee
Identifier: anatomyofhoneybe18snod (find matches)
Year: 1910 (1910s)
Authors: Snodgrass, R. E. (Robert E. ), 1875-1962; United States. Bureau of Entomology
Subjects: Insects; Bees; Bees Anatomy; Honeybee Anatomy
Publisher: Washington, D. C. : G. P. O.
Contributing Library: U.S. Department of Agriculture, National Agricultural Library
Digitizing Sponsor: U.S. Department of Agriculture, National Agricultural Library

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THE ALIMENTARY CANAL AND ITS GLANDS. 97 vaginated into the posterior end of the honey stomach. Each lobe of its mouth forms a thick triangular ridge on the walls of its lumen, in which lies a special mass of longitudinal muscle fibers {LMd). The epithelium of the lumen is lined by a thick, smooth, chitinous intima (Int). while the lobes of the mouth (nn) are pro- vided with bristles point- ing inward and backward into the mouth opening. The posterior opening of the proventriculus into the ventriculus. is guarded by a long tubular fold of its epithelium (fig. 15, PventVlv), the proventric- ular valve. This would appear to constitute an effective check against the escape of any food back into the proventriculus. It looks like one of those traps which induces an animal to enter by a tapering funnel but whose exit is so small that the captive can not find it from the other side. Yet Schonfeld has elab- orately described experi- ments by means of which he induced the ventriculus to discharge its contents through the proventriculus into the honey stomach and even into the end of the oesophagus. He says that he did this by gently tap- ping on the honey stomach and the ventriculus at the same time. The experiment was repeated many times with unvarying results and Schonfeld de- scribes so minutely what happened that we can not disbelieve his statements. From these experiments he argues that the larval food- stuff is prepared in the stomach and regurgitated through the proven- triculus directly into the (esophagus by a contraction of the honey stomach which brings the stomach-mouth against the base of the oesoph- 22181—No. IS—10 7
Text Appearing After Image:
\£nt -Longitudinal median section of base of oesophagus {(E),honey stomach (HS I. proventricu- lus (Pvent) and ventriculus [Vent) of a queen.

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