. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. 96 bulletin: museum of comparative zoology. middle. First discoidal cell sessile above; recurrent nervure parallel with the first transverse cubitus, received near the tip of the first cubital cell; marginal cell long, the radius strongly arcuate at the base, but nearly straight beyond; submedian cell considerably longer than the median; second discoidal cell completely closed; subdiscoidal vein inserted below the middle of the discoidal vein; anal cell apparently not divided. There is a constric- tion beyond
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. 96 bulletin: museum of comparative zoology. middle. First discoidal cell sessile above; recurrent nervure parallel with the first transverse cubitus, received near the tip of the first cubital cell; marginal cell long, the radius strongly arcuate at the base, but nearly straight beyond; submedian cell considerably longer than the median; second discoidal cell completely closed; subdiscoidal vein inserted below the middle of the discoidal vein; anal cell apparently not divided. There is a constric- tion beyond the first transverse cubitus as though a second transverse cubitus were present, but in both otherwise finely preserved wings there is no trace of such nervure. Described from one specimen collected by Mrs. W. P. Cockerell at Station 13B. It has very well preserved wings, although the body wrhich is seen in ventral view shows few details. I cannot be posi- tive that this is the proper location for the species, but I think it will be sought for in this group. SlGALPHINAE. No Sigalphinae are known to occur in other formations, and only one which is probably referable to Urosigalphus occurs at Florissant. Urosigalphus aeternus, sp. nov. (Fig. 79.) Probably a female. Length 2 mm. Entirely black except for the tip of the abdominal carapace below, which is dark fuscous or piceous. Antennae very slender, of an indeterminate number of joints as the apices are not preserved; basal joints elongate, but those farther on (beyond the middle) quadrate and distinctly thicker than the basal ones. Surface of head and mesonotum shining, the pleurae below slightly and the abdominal carapace strongly rugose punctate in the manner characteristic of members of the subfamily. Abdomen very short and stout, scarcely longer than the head and thorax together, both of which are also stout. Wings nearly hyaline; stigma fuscous, veins pale brown; Radial vein originating just beyond the middle of the stigma
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Keywords: ., bookauthorha, bookcentury1800, bookdecade1860, booksubjectzoology
