354 HYMENOPTERA. 



4. NYSSON TRIMACULATUS. B.M. 



Crabro trimaculatus, Rossi, Faun. Etrus. ii. 95. 892 $ . 

 Nysson nigripes, Spin. Ins. Lig. ii. 45. 38. 



St. Farg. Hym. iii. 46. 2. 



Nysson interruptus, Oliv. Encycl. Meth. viii. 408. 2. 

 Nysson trimaculatus, Van d. Lind, Obs. ii. 30. 2 c? $ . 



Shuck. Foss. Hym. 102. 3. 



Dahlb. Hym. Europ. i. 169. 101. 



Wesm. Hym. Foss. Eelg. 77. 3. 



Hub. Britain; Italy; France; Germany; Belgium; Sweden; 

 Lapland; Finland. 



5. NYSSON DIMIDIATUS. B.M. 



Nysson dimidiatus, Jurine, Hym. 199. t. 10. gen. 22. 



Van d. Lind, Obs. ii. 33. 6. 



Shuck, Foss. Hym. 104. 5. 



Dahlb. Hym. Europ. i. 171. 105. 



St. Farg. Hym. iii. 49. 5. 



Wesm. Hym. Foss. Eelg. 82. 6. 

 Nysson Wesmaeli, St. Farg. Hym. iii. 50. 6. 

 Nysson quadriguttatus, Spin. Ins. Lig. ii. 43 ? 

 Hab. Britain; France; Germany; Belgium. 



6. NYSSON GUTTATUS. B.M. 



Nysson guttatus, Oliv. Encycl. Meth. viii. 409. /. 

 Shuck. Foss. Hym. 103. 4. 



Hab. Britain ; France ; Albania. 



This is probably a highly-coloured variety of the IV. maculatus; 

 a still more highly-coloured example of that species is in the 

 collection of the British Museum, from Albania ; both being, in 

 all probability, varieties of N. dimidiatus. 



7- NYSSON SCALARTS. B.M. 



Nysson scalaris, Illig. ed. Faun. Etrus. ii. 157. 

 Nysson Dufourii, St. Farg. Hym. iii. 51. 7- 

 Nysson Dufouri, Dahlb. Hym. Europ. 485. 8. 



Hab. France. 



8. NYSSON EPEOLIFORMIS. B.M. 



Female. Length 5i lines. Black : the head and thorax 



coarsely punctured; the face and cheeks with bright silvery 



pubescence ; on the vertex and disk of the thorax a thin auri- 



