226 S. PRANK AARON. 



Margin of third segment evenly rounded inusitata. 



Margins of third segment straight laterally and on the apex, broadly 



rounded on the angles, much tapered optima. 



Posterior lateral angles of the metathorax more or less produced or pointed. 

 Anteapical series of pits contained at the bottom of a strong declivity 



ending on each side near the base of the segment pacifica. 



Anteapical series of pits contained in a broad, shallow groove or sulcus, 

 becoming obsolete laterally and ending not half way to the base of 

 segment. 

 Apical margin of third segment straight, or slightly rounded outwardly, 



hilaris. 

 Apical margin of third segment slightly sinuate in the middle. 



inte^ra. 

 Posterior corners of the margins of third segment angulated, produced. 

 Corners produced but slightly into a rounded lobe, series of pits small, 



ending about in the middle of the lateral margins cobaltina. 



Corners produced into a well defined triangular tooth bluntly pointed, 

 the series of pits large, ending near the base of the segment. 



lateri-dentata. 

 Chrf sis inartia Patton, Can. Ent. xi, fi", 1879. 



" Head and thorax green ; abdomen dark red with green and purple reflections; 

 head and thorax densely and strongly punctured, no transverse ridge between 

 the eyes; prothorax with a median groove; postscutellum and metathorax evenly 

 rounded above; abdomen densely punctured, the punctures finer than those of 

 the thorax; the series of foveolae on the third segment consisting of twelve deep 

 punctures, the median ones the largest; second and third segments of equal 

 length, the third segment narrowed a little beyond the foveolse and produced in 

 the centre, the tip truncate, of more than one-third the width of the segment, not 

 dentate; wings hyaline; 5 mm. long. Godbout River, Lower Canada." 



From the description of Patton ; the insect is unknown to me. With- 

 out being able to examine the peculiar character of the apical margin as 

 described, it becomes rather puzzling. I have placed the species in the 

 group with the margin entire, but very doubtfully, however, as it may 

 belong to the unilohed group. I have also placed it before verticalia, 

 not intending, however, to indicate its correct position. 



Chrysis verticalis Patton, Can. Ent. xi, 67, April, 1879. 



Chrysis striatdlus Norton, Trans. Am. Ent. Soc. vii, 239, May, 1879. 

 Fifteen specimens in the collection from the following localities : Mas- 

 sachusetts, Delaware, Virginia, Illinois (types of sfn'afelbis), New Hamp- 

 shire, Georgia, Colorado, Washington Territory and California. Norton 

 also mentions Pennsylvania. Varies from bright green with- blue reflec- 

 tions to dull blue and purple. The dorsum of the abdomen in many 

 specimens is dull, with the reflections darker than the general color. In 

 some specimens the dorsum is dull black with very slight reflections. 

 The head is much longer than is generally the case in the species of the 

 genus ; 4—6 mm. long. 



