144 [January 



each side at base, and the fasciae on the second and three following see:- 

 ments of the abdomen obtusely emarginate in front. 



Male. — Resembles the female, with the short lines on mesothorax 

 obsolete, the line over the tegulaa interrupted, the black spot on each 

 side of the pectus much enlarged, the spot beneath the fore-wings 

 divided by a black line, the semicircular line on the metathorax obso- 

 lete, the posterior lateral spot sometimes very small, and the fasciae 

 on the second and three following segments of the abdomen very ob- 

 tusely emarginate; beneath, the second segment has a compressed, 

 curved, acute tooth on the middle, and the sixth segment is rounded at 

 apex, with a central tooth like that on the second segment, but not 

 curved at the apex. 



Collection. — Ent. Soc. Philad. Twenty-six ( £ 9 ) specimens. 



The yellowish markings of the head and thorax, as well as the legs, 

 are sometimes tinged with ferruginous. 



This is doubtless the insular is of Dahlbom, although his short diag- 

 nosis would as well apply to other species as to this, and therefore, to 

 prevent further confusion, I add a more detailed description of the 

 species. 



It has some resemblance to M. signata, but is smaller, the clypeus is 

 immaculate, the lines on the mesothorax are very short, the fasciae on 

 the abdomen are altogether of a different shape; the apical segment of 

 the male of siynata is emarginate at tip and has an acute tooth on each 

 side, and the second and last ventral segments are without a central 

 tooth. 



7 Monedula dissecta, Dahlb. 



Monedula dissecta, Dahlb. Hym. Europ. i, p. 186. 9- 



Female. — Black, with a slight iridescence; head and thorax clothed 

 with a fine, short, cinereous pile ; sides of the face silvery in certain 

 lights; clypeus semicircular, yellowish, covered with a very fine, sil- 

 very-sericeous pile, with its anterior margin and two spots on the ante- 

 rior middle, dusky ; labrum dull yellowish, silvery-sericeous as well as 

 the base of the mandibles, which are piceous; antennae black, the scape 

 beneath yellow. Thorax subopaque, very minutely and closely punc- 

 tured; the collar, two spots on the mesothorax in front, broad line on 

 each side extending over the tegulae to the scutellum, tubercles, a large 

 spot on each side of the scutellum, a transverse line on postscutellum, a 

 narrow, semicircular line on the metathorax, interrupted on the disk 

 behind, and the large posterior angles, all deep yellow; metathorax 

 very broadly excavated behind, making the posterior angles large, com- 



