File:Goldfish breeds and other aquarium fishes, their care and propagation - a guide to freshwater and marine aquaria, their fauna, flora and management. With 280 explanatory illustrations, printed with (14763234541).jpg

Identifier: goldfishbreedsot00wolf (find matches)
Title: Goldfish breeds and other aquarium fishes, their care and propagation : a guide to freshwater and marine aquaria, their fauna, flora and management. With 280 explanatory illustrations, printed with the text
Year: 1908 (1900s)
Authors: Wolf, Herman Theodore, 1855-
Subjects: Aquariums Goldfish
Publisher: Philadelphia : Innes & sons
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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acles long andslender. This snail occurs very generally in the Eastern and MiddleStates and is found in the Delaware and Schuylkill rivers. Its eggs arelaid in a yellowish vermiform mass and hatch in 12 to 20 days. P. magnificuSj Fig. 171,is the largest recently known American species,having the flattened sinistral shell very large and heavy, about 1 l/2 inch indiameter and 1 inch high. The upper or spire half of the shell is pale-brown and the lower half dark-brown. The surface is glossy and markedby fine lines of growth. The spire is narrow, the suture depressed, andthe summit of the nearly five complete whorls acutely angular and theumbilicus deeply funnel-shaped. The base of the whorls is so narrowlyrounded as to appear almost angular. The last whorl is very large, roundedat the periphery, and the irregularly ovate aperture but slightly oblique. 234 MOLLUSCS, VERMES AND HYDROZOA Found at Lower Cape Fear river in the vicinity of Wilmington, N. C.No other locality has been reported.
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