File:Image from page 071 of "Introduction to zoology; a guide to the study of animals, for the use of secondary schools;" (1900) (14598325398).jpg

Identifier: introductiontozo00dave Title: Introduction to zoology; a guide to the study of animals, for the use of secondary schools; Year: 1900 (1900s) Authors: Davenport, Charles Benedict, 1866-1944 Davenport, Gertrude Anna Crotty, 1866- Subjects: Zoology Publisher: New York, Macmillan company London, Macmillian and co., ltd. Contributing Library: MBLWHOI Library Digitizing Sponsor: MBLWHOI Library

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Text Appearing Before Image: FIG. 52.—One of theclick beetles.Nat. size. Photo,by W. H. C. P. 52 ZOOLOGY

Text Appearing After Image: a another and a well-known family. They are distinguishedby soft wing-like elytra and by the great expanse of the thoracic shield, whichpartly or wholly coversthe head. Certain non-luminous species live onflowers, especially thegolden-rod ; the lumi-nous species are noctur-nal. The light-giving or-gan lies in the abdomen.The larv?e also are lumi-nous and are known asglow-worms (Fig. 53).A family of consider- FIG. 53.--Photuris, a firefly. «, larva; - . b, adult. The lines to the left of figures able economic import-represent actual lengths of animals. From £ince js that of the TenC-Packard. . briomdae, so called fromthe principal genus Tenebrio,1 thelarva of which, known as the meal-worm, occurs in flour and cerealsand looks much like a wire-worm.2The adult beetle is black and aboutone-half an inch long (Fig. 54).The family is not abundant in thenortheastern part of the UnitedStates. 0 i i • i f i i^ i ,1 FiG.54.—Tenehrio,the meal-Several kinds Ot adult beetles worm Left, larva;

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