Identifier: hardwickesscienc22cook (find matches)
Title: Hardwicke's science-gossip : an illustrated medium of interchange and gossip for students and lovers of nature
Year: 1886 (1880s)
Authors: Cooke, M. C. (Mordecai Cubitt), b. 1825 Taylor, J. E. (John Ellor), 1837-1895
Subjects: Science Natural history
Publisher: London : Robert Hardwicke
Contributing Library: MBLWHOI Library
Digitizing Sponsor: MBLWHOI Library

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
iedwith wings, etc., and work down the scale till wereach the genus Demodex or Hypopus, among theAcari, whose structure is extremely simple. Thesubject of vegetable parasites, generally of a fungoidtype, such as that occasioning ring-worm, I do notpropose touching upon, nor yet that large and inter-esting subject of Helminthology, so ably treatedof by the late Dr. Cobbold. Tutting aside, then, such insectsasmosquitoes, horse- flying, the species of the genus only being able to take-short flights, which are little more than leaps. Theirmouths are formed for suction, and from their largesize these parasites must be injurious. The grouse,owl, plover, and several other birds, are the hosts oi;this genus. Next we may mention the Stenopteryxhirundinis, an insect about the same size, and verylike the last, except that the wings are merely rudi-mentary. It is found about the nests and upon theyoung of the swallow. Passing still further down thescale we come to the Melophagus ovinus, or sheep-
Text Appearing After Image:
I £• 74-—Parasite of Flying Fox, 2 . X 20. flies, etc.—some of which suck the blood of their host,but do not make their dwelling there, while otherslay their eggs beneath their skins, and whose larva?are nourished there, and which consequently are, forat least a part of their lives, true parasites—we find,as perhaps one of the most highly organised, or at allevents very nearly allied to the Diptera, the genusOrnithymia (Fig. 72). This genus contains severalspecies, all of which are of large size, being but littlesmaller than the common bluebottle fly, and equippedwith a pair of well-developed wings, though they,probably from disuse, do not seem of much service for tick, called in Scotland the kade, and which is toowell known to require description, beyond the factthat it is not a tick at all, and is entirely distinct fromthe proper sheep-tick, which is a species of Ixodes.Closely allied to this is the genus Lipoptena, foundupon the stag (see Fig. 73). In both these generathe

Note About Images