In this article we will discuss about the structure of Opheolepis with the help of a diagram. 1. It is commonly known as "brittle star" and is found in shallow waters. It is usually of green colour. 2. Body comprises of a distinct and some what rounded disc and five narrow, flexible jointed and slender arms radiating from it. 3. [...]
In this article we will discuss about the structure of Cucumber (Holothuria) with the help of a diagram.1. It is commonly known “cucumber", is marine and shallow waters. 2. Body elongated, cylindrical, broad in the middle and tapering behind. 3. The mouth and anus (cloaca) are situated at opposite ends one being at anterior and the other at posterior end. [...]
In this article we will discuss about the structure of Spanish Lobsters (Scyllarus) with the help of a diagram. Fig. 231 SCYLLARUS 1. They are commonly called "Square or Spanish lobsters" and are large marine and crawling crustacears. 2. Their body is dorsoventrally flattened with well developed abdomen and greatly reduced rostrum. 3. The thoracic legs are non-chelate and uropod [...]