Mr. J. O. Westwood oti the Chalcidida. 3 



verts are broad and rounded, the third and fourth quills are longest, and 

 from the third to the ninth inclusive the inner webs are marked with a 

 large irregular white spot, the outer webs of the fifth to the eighth inclu- 

 sive are also marked with a square white patch opposite to that on the 

 inner. The tail is much graduated, and the two exterior feathers have an 

 oval white spot near the extremity of each. The legs and feet are black, 

 and formed as in Promerops. 



Dr. Smith observes that the species is of rare occurrence, he having met 

 with it only three times. All the specimens were procured at the most 

 northern boundary of the colony, and it is probable that they may be 

 found in more abundance when his researches are continued in that 

 direction. 



On the Plate, Fig. 1. represents the bill seen from above with the incum- 

 bent scales in the proper place. Fig. 2. one of the scales removed. 

 Fig. 3. left foot seen from above. Fig. 4. hallux. Fig. 5. bill of the 

 natural size, showing the scale removed and the true membrane covering 

 the nostrils. 



Art. II. On the ChalcididcB. By J. O. Westwood, Esq., 

 F.L.S., &c. 



No. 1, Rules for Entomological Nomenclature. 

 No. 2. Application thereof to the Chalcididse and Cynipidge. 

 No. 3. Characters, &c., of the genera CleonymusLatr. and Cheiro- 

 pachus mihi belonging to the former family. 



No. 1. 



" II ne s'agit ici que de la seule Nomenclature." Spinola. 



There is no portion of tlie entomological productions of Great Britain 

 which has been so completely disregarded by British Entomologists 

 as the insects composing the family Chalcididse; and when we have 

 mentioned Latreille, Spinola and Dalmaa among the continental Entomo- 



b2 



