1892.] ENTOMOLOGICAL NEWS. 197 



do in the moss and others in their galleries, the imago has an 

 opportunity to crawl upon the stem and develop after emerging. 

 I place the larvae in a cold hallway or out-house, during Winter. 

 Have collected such from December up to late in April. 



Dr. Riley states in "American Naturalist," vol. xvii, p. 1169, 

 that A. obliquata also bores the stems of Stigiftaria (Arrow-head) 

 and Pontederia (Pickerel Weed), whereas Dr. Kellicott, in the 

 same work, mentions another food-plant, Sparganiimi (Bur Reed), 

 but it is bored much less so than Typha. 



This larva, and other species of such borers, could not well 

 hibernate in either Sagittaria or Pontederia, the stems of which 

 are too succulent and perish with the first killing frosts of Winter. 



(To be continued.) 



o 



Description of a new Solitary Wasp. 



By WM. J. Fox, Phila., Pa. 



Odynerus ( Odyncrus} Aldrichi. 



1 . Clypeus with coarse, separated punctures, with longitudinal folds 

 or stria?, which are more obvious when viewed from certain positions, 

 bidentate anteriorly and with a rather strong depression just behind the 

 teeth ; head coarsely and closely punctured, the punctures becoming 

 sparse on the cheeks; first joint of flagellum equal in length to the two 

 following united; thorax punctured like the head; scutellum strongly im- 

 pressed medially; postscutellum when viewed from the front, crenulated; 

 metathorax strongly depressed, with a strong, somewhat triangular exca- 

 vation at base, rugose towards the sides, the metapleurae with irregular, 

 oblique striations; when viewed from behind the lateral margins of the 

 metathorax are seen to be emarginate below the middle; hind coxa; armed 

 with a strong tooth near the base on outer edge; first abdominal segment 

 above with coarse, separated punctures, those on the second much finer, 

 on the third segment the basal half is microscopically punctured, while 

 on the apical portion it has coarse, close, shallow punctures; beneath the 

 basal portions of the segments are finely punctured, the apical portion 

 strongly so; black; two transverse, curved spots on clypeus at base, two 

 minute dots behind antenna;, inner eye orbits on lower portion, large spot 

 at top of cheeks, prothorax above, anteriorly, teguke, except outer mar- 

 gin and a spot near base which are brown, spot on mesopleurse above, 

 posterior margins of scutellum and postscutellum, the marks narrowed 

 on each side, all bright yellow; a large spot on each side of first abdom- 

 inal segment also yellow, connected by a greenish white band on apical 

 margin of the segment, apical margins of dorsal segments 2-5 and a lar_v 

 spot on apical margins of ventral segments 2, 3 and 4, laterally, also 



