A proboscis /proÊËbÉsÉªs/ is an elongated appendage from the head of an animal, either a vertebrate or an invertebrate.In invertebrates, the term usually refers to tubular mouthparts used for feeding and sucking.he elephant 's trunk and the tapir 's elongated nose are called proboscis, as is the snout of the male elephant seal. The proboscis monkey is named for its enormous nose. An abnormal facial appendage that sometimes accompanies ocular and nasal abnormalities in humans is also called a proboscis.
The House of Representatives allows for no more than 435 representatives to be divided among the 50 states, the District of Columbia and the five U.S. territories (American Samoa, Guam, Northern Marina Islands, Puerto Rico and the U.S. Virgin Islands).
According to Article 1 of the Constitution, how many representatives there are in Congress is determined by each state's population. A census is taken every 10 years to accurately apportion a state's representatives. The most basic calculation is there is to be one representative for every 30,000 residents. If there are not 30,000 people living in a state, that state will still get at least one representative.