| 释义 |
‖ interoperculum Ichthyol.|ˌɪntərəʊˈpɜːkjʊləm|
[inter- 2 b.]
One of the four bones normally forming the gill-cover, esp. in teleostean and ganoid fishes; usually situated below the præoperculum, and partly between this on one side and the operculum and suboperculum on the other.
1855in Mayne Expos. Lex. 1871Darwin Desc. Man II. xii. 10 The male has its mouth and interoperculum fringed with a beard of stiff hairs. 1888Rolleston & Jackson Anim. Life 93 A series of membrane bones well developed in Teleostei and Ganoidei are attached to the posterior edge of the hyomandibular and quadrate bones. These are the prae-operculum, the operculum, the sub-operculum, and the inter-operculum. They close in laterally the branchial cavity. |