222 The Ottawa Naturalist. [January 



48. Tachysphex sp. A male received from Mr. Guig'nard cannot be 



referred to any of the descriptions accessible. It is black with the 

 exception of the reddish posterior margfins of segments 2 and 3 of 

 abdomen. The metanotum is finely striated and the eyes are unusu- 

 ally close together on the vertex. 



Subfamily II. — Lyrodhiee. 



49. Lyroda subita, Say. Of this elegant black species 2 females, 



3 males. 



Subfamily IV. — Pisonince. 



50. Pi son 1 « V i s, Smith. Provancher (Add. Hym., p. 269) credits Mr. 



Guignard with having taken a female at Hull. I have not seen the 

 insect, as it, with others previously mentioned, are in the Provancher 

 collection in Quebec. 



Family XX.— Philanthidse. 



Subfamih^ I. — Cercerina. 



51. Cerceris clypeata, Dahlb. This and the next are our only 



representatives of about one hundred described North American 

 species. It is a common insect ; 7 females, 11 males. 



52. Cerceris nigrescens. Smith. The markings of this species are 



white, instead of yellow, and ii is also abundant . 4 females, 6 males. 

 Subfamily II. — Phila7ithince. 



53. Aphilanthops frigidus, Smith. A pretty insect and not com- 



mon ; 2 females. 2 males. 



54. Epiphilanthus soli vagus, Say. Our largest and most abun- 



dant species of this fimily. Very numerous upon goldenrod ; 18 

 females, 13 males. 



55. Anthophilus politus. Say. One female. Taken also by Dr. 



Fletcher. 



55rt. Anthophilus dubius, Cress. Two males: the species is evi- 

 dently a synonym of politus. 



56. P h i 1 a n t h u s b i 1 u n a t u s , Cress. A highly polished insect prettily 



marked with bright yellow ; 8 males. The female appears to be 

 unknown. 



Family XXI. — Trypoxylidae. 



57. Trypox}'lon striatum, Pro v. (T. a 1 b i p i 1 o s u m, Fox.) A 



fine large species which appears to be rare in this district as I have 

 taken only one female. I have, however, received a male from Mr. 

 Guignard who also furnished the type to Provancher. 



58. Try poxy Ion frigidum. Smith. A small species and rather 



abundant ; 6 females, i male. 



