Proboscis. proboscis. 1. (Science: zoology) A hollow organ or tube attached to the head, or connected with the mouth, of various animals, and generally used in taking food or drink; a snout; a trunk. The proboscis of an elephant is a flexible muscular elongation of the nose.The proboscis of insects is usually a chitinous tube formed by the modified maxillae, or by the labium. 2. (Science: zoology) By extension, applied to various tubelike mouth organs of the lower animals that can be everted or protruded.he proboscis of an elephant is a flexible muscular elongation of the nose. The proboscis of insects is usually a chitinous tube formed by the modified maxillae, or by the labium.
California currently has 53 members in the US  House of Representatives. That number will be adjusted after the  2020 US Census, effective with the 2022 elections.  Califo â¦ rnia has 55 representatives.
There are 100 Senators in the Senate. The number of Senators per state remains at two and the total number only changes when a new state is admitted into the union. There are 435 Representatives in the House of Representatives. The number of members in the House of Representatives is a different story and is based on population. The process by which seats in the House are distributed to the states is called âCongressional apportionmentâ and starts with the U.S. Census which is conducted every ten years. The number of seats depends on the population of each state which in turn determines the number of districts.