1. The " Bostryx chusgonensis sipas " is separated by mountain ranges from the nominate subspecies. 2. Smaller specimens of " Bostryx granulatus " may also be compared to " Bostryx superbus" 3. Smaller specimens of " Bostryx granulatus " may also be compared to " Bostryx superbus" 4. Dimension of the holotype of " Bostryx chusgonensis sipas " are as follows : The width of the shell is 4.7 mm. 5. The description of " Bostryx chusgonensis sipas " extends the range ca . 180 km more northward within the drainage system of the R�o Mara�on. 6. ""'Bostryx " "'is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Bulimulidae. 7. The type locality of " Bostryx chusgonensis sipas " is Shipasbamba [ 05?4 25 S 078?2 35 W, 1360 m ], Amazonas Region, Peru. 8. "Bostryx " sensu stricto is the type genus of the subfamily Bostrycinae, but some species of " Bostryx " sensu lato are placed within Bulimulinae. 9. "Bostryx " sensu stricto is the type genus of the subfamily Bostrycinae, but some species of " Bostryx " sensu lato are placed within Bulimulinae. 10. ""'Bostryx edmundi " "'is a species of tropical air-breathing land snail, a pulmonate gastropod mollusk in the family Bulimulidae.
