. The Bermuda islands. An account of their scenery, climate, productions, physiography, natural history and geology, with sketches of their discovery and early history, and the changes in their flora and fauna due to man. Natural history. 815 A. E. Verrill—The Bermuda Islands. 403 Two large Dragon-flies, of this species, taken at St. David's I. in October, and sent to me by Miss V. Hayward, before they were fairly dry, agree well together, but differ so much in color from the usual descriptions of this species, that they may indicate a local color variety. The head is bright yellow, as usual,
. The Bermuda islands. An account of their scenery, climate, productions, physiography, natural history and geology, with sketches of their discovery and early history, and the changes in their flora and fauna due to man. Natural history. 815 A. E. Verrill—The Bermuda Islands. 403 Two large Dragon-flies, of this species, taken at St. David's I. in October, and sent to me by Miss V. Hayward, before they were fairly dry, agree well together, but differ so much in color from the usual descriptions of this species, that they may indicate a local color variety. The head is bright yellow, as usual, but the circular mark on the vertex of head, with enclosed spot, is black, though showing a tinge of blue iridescence in some lights. Thorax is pale greenish on the sides, but yellowish brown or chestnut above, as is the upper side of the first abdominal segment, and of the second as far as the raised and angulated transverse line, back of which it and the base of the third segment are bright malachite green above ;. Figure 190.—Dragon-fly {Anax Junius); % natural size ; after Drury. the sides of the first and all of the second segment have the same green color ; remainder of abdomen in one example is mostly dull dark brown, with an obscure blackish median stripe, and with a slight tinge of dark blue on the sides ; yellowish brown below. In the other the black dorsal stripe is well defined, expanding angularly in one or two places on each segment, and forming a narrow band at each suture ; sides yellowish brown crossed by the blackish mark- ings ; venter chestnut-brown ; anal appendages large, black, flat, with an outer, oblique, distal spur or spine ; legs black, becoming dark brown on the femora ; wings hyaline, tinged with ^^ellowish centrally ; pterostigma large, dark brown : costal margin yellowish ; veins nearly black. Antecubitals IS-]*?; postcubitals 8 or 9. Ex- panse, 95™'" and 105™™ ; length of largest, 14""P. A large species occurs, apparentl
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectnatural, bookyear1902
