File:American malacological bulletin (1986) (17533757104).jpg

Title: American malacological bulletin
Identifier: americanmal4519861987amer (find matches)
Year: 1983 (1980s)
Authors: American Malacological Union
Subjects: Mollusks; Mollusks
Publisher: (Hattiesburg, Miss. ?) : (American Malacological Union)
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Biodiversity Heritage Library

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Text Appearing Before Image:
BOLETZKY: ENCAPSULATION OF CEPHALOPOD EMBRYOS 219
Text Appearing After Image:
Fig. 1. Female Sepia officinalis seen from the water surface while attaching an egg to a shackle suspended in the tank. The two bars indicate the middle axis of the eye ball to show convergent orientation for binocular vision; note also the arm tips stretched out towards the egg support. Fig. 2. An egg envelope of Sepia officinalis (laid empty, without an ovum), cut open. Inside the shrunken outer envelopes, the cavity normally containing the ovum is filled with a spirally coiled sheet of softer jelly, probably corresponding to the coiled oviducal jelly described by Jecklin (1934). Arrow indicates area enlarged in Fig. 3. Scale bar = 1 mm. Fig. 3. Detail of Fig. 2 at higher magnification. Fig. 4. Egg mass of Rossia macrosoma on a Pinna pectinata shell. Fig. 5. Semithin section through the outer shell of an egg of Rossia macrosoma. Note the very dense layers at the surface (above) and the alveolated inner layer (below). Scale bar = 10 /im. Fig. 6. Eggs of Sepiola sp. on a Pinna shell. Arrow head points to an elongated junction (see text). Scale bar = 10 mm. Fig. 7. Egg capsule of Loligo vulgaris shortly after laying, showing the spiral arrangement of the string of eggs embedded in oviducal jelly. Note the inversion of coiling direction in the lower right (this is close to the end of the capsule). Scale bar = 1 mm. Fig. 8. Enlargement of the area indicated in Fig. 7, after removal of the outer coat.

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