The animal kingdom : arranged after its organization, forming a natural history of animals, and an introduction to comparative anatomy . and a series of memoirs by M. Boyer de Fonsco-lombe in the Annates de la Sociefe Entomologiqiie de France, may be consulted. The British species, distributedinto various genera, have been described by Mr. Stephens.] .Eshna, f abr., is similar to Libellula in the manner in which the wings are carried when at rest, and in the formof the head, but in which the two posterior ocelli are situated upon a simple transverse elevation, having, more-over, the middle lob
The animal kingdom : arranged after its organization, forming a natural history of animals, and an introduction to comparative anatomy . and a series of memoirs by M. Boyer de Fonsco-lombe in the Annates de la Sociefe Entomologiqiie de France, may be consulted. The British species, distributedinto various genera, have been described by Mr. Stephens.] .Eshna, f abr., is similar to Libellula in the manner in which the wings are carried when at rest, and in the formof the head, but in which the two posterior ocelli are situated upon a simple transverse elevation, having, more-over, the middle lobe of the lower lip larger, and the two others wide apart, and armed with a strong tooth orspine ; the abdomen is always long, narrow, and cylindric. The body of the larva and pupa; is also more elongatethan in those of Libellula ; the mask is flat, with its two hooks narrow, and armed with a moveable hook at thetip. Libellula grandis, [a common English species, two inches and a half long, and many others]. They fly withastonishing rapidity over the margin of waters, pursuing flies and other insects in the same manner as 576 INSECTA. Agrio7i, Fabr., has the wing-s elevated perpendicularly in repose; the head transverse, with the eyes apart; theform of the lower lip is similar to that of ^shna, but its middle lobe is slit to the base. The forehead is not fur-nished with a vesicle; the ocelli are nearly equal in size, and arranged in a triangle on the vertex; the abdomenis very slender and fiUform, and occasionally very lon^. The body in the lar\a and pupa states is also long andslender, and the abdomen terminated by two oar-like appendages; the mask is flat, with the superior extremity ofthe chin-piece elevated into a point in some, and forked in others. Libellula virgo, Linn., is of a golden-greenor bluish-green colour, with the wings blue, either entirely or partially, and sometimes pale brownish-yellow.[This and several other species of smaller size, belonging to th
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Keywords: ., bookauthorwe, bookcentury1800, bookdecade1840, booksubjectanimals
