Noun:

ஒரு பொருளை பற்றிய முழுமையான இலக்கியத் தொகுப்பு,

cormus's Usage Examples:

- Porpita, seen from above, keeps the cormus at or showing the pneumatophore and exnear the surface of the panded palpons.

Contrasting, in the second place, with the polyorgan theory are the various "polyperson " theories which interpret the Siphonophore cormus as a colony composed of more or fewer individuals in or a', Pneumatocyst.

Divergent views have been held by different authors both as regards the nature of the cormus as a whole, and as regards the homologies of the different types of appendages borne by it.

Eurycormus), to biconcave centra, and finally to the socket-and-ball condition that prevails at the present day.

A typical Siphonophore is a stock or cormus consisting of a number of appendages placed in organic connexion with one another by means of a coenosarc.

The coenosarc may consist of a single elongated tube or stolon, forming the stem or axis of the cormus on which, usually, the appendages are arranged in groups termed cormidia; or it may take the form of a compact mass of ramifying, anastomosing tubes, in which case the cormus as a whole has a compact form and cormidia are not distinguishable.

The subsequent development is slightly different according as the future cormus is headed by a pneumatophore (Physophorida, Cystophorida) or by a nectocalyx (Calycophorida).

In cases where the cormus has no pneumatophore the topmost swimming bell may contain an oil-reservoir or oleocyst.

The cormus is always differentiated into two parts; an upper portion termed the nectosome, in which the appendages are locomotor or hydrostatic in function, that is to say, serve for swimming or floating; and a lower portion termed the siphosome, bearing appendages which are nutritive, reproductive or simply protective in function.

From the broader portion of the planula an outgrowth arises which becomes the first tentacle of the cormus.

The difference between the theories of Haeckel and Chun is connected with a further divergence in the interpretation of the stem or axis of the cormus.

Never more than one pneumatophore is found in a cormus, and when present it is always situated at the highest point above the swimming bells, if these are present also.