. The fossil insects of North America, with notes on some European species [microform]. Insects, Fossil; Insects; Insectes fossiles; Insectes. ORTHOPTE U AâACRIDII. 221 TYRBULA gen. nov. (Tvp/Srf). TliiH immo Ih propoHed for ii group of Truxulidic evidently falling in closi) proximity to Syrbnla Still, having linear antennic, enlarged npically, and hind tii)ia' well provided with npineH. The antenn»»' are more diHtinetly (â¢,lul)bed tliau in Syrbula, the club being about twice the diameter of the stalk, composed of seven or eight joints of which the last two are very small, forming a rapidly
. The fossil insects of North America, with notes on some European species [microform]. Insects, Fossil; Insects; Insectes fossiles; Insectes. ORTHOPTE U AâACRIDII. 221 TYRBULA gen. nov. (Tvp/Srf). TliiH immo Ih propoHed for ii group of Truxulidic evidently falling in closi) proximity to Syrbnla Still, having linear antennic, enlarged npically, and hind tii)ia' well provided with npineH. The antenn»»' are more diHtinetly (â¢,lul)bed tliau in Syrbula, the club being about twice the diameter of the stalk, composed of seven or eight joints of which the last two are very small, forming a rapidly tapering tip. The head is less prominent than in Syrbula and the eyes considerably smaller, being considerably shorter than the in- fraocidar parts of the cheeks ; otherwise the general aspect of the insect is the same. The genicidar lobes are as in Syrbula. The hind tibia', are abun- dantly spined, in one species even much more abundantly than in Table of the ipemei of Tgrbula. 8|iini>ii of hind tibiu) exoeedlnf;ly nnnierous, their basal halt hardly tapering Spines of bind tibiai loss nninerons, tapering uniformly throughout ...1. T. multiapinota. 2. T. rutnelU. â 1. TyKBULA M1JLTI8PIN08A. PI. 17, Fig. 13. This species is represented mainly by fragments of hind wings and hind legs. Of the former nothing more can be said than that they appear to have had a faint smoky tinge with numerous black, delicate veins, and that when closed they extended a very little beyoud the tip of the abdomen. The hind legs are long, moderately slender, the tibiic armed with exceptionally numerous spines which are blackish, of uniform width to beyond the middle, and then tapering, mainly by the excision of the under edge, giving them a slightly upturned appearance, five or six times longer than their breadth at the middle, and so closely set that the interspaces and the spines are of equal breadth; they decrease in length very regularly toward the base of the tibia and to a sli
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishe, booksubjectinsects
