Il8 ENTOMOLOGICAL NEWS. April, '04] 



of learning to what insect Linnaeus intended this description 

 should apply. Catesby's figure, however, gives but little 

 assistance. The drawing is smaller than the insect here con- 

 sidered, but I can find no evidence that Catesby's figures have 

 any definite relation to the size of the objects they represent. 

 Still the figure is evidently of a Sphecid, and of one with a 

 petiole longer than the abdomen — a character not true for the 

 present case. So far as any conclusion can be drawn from the 

 figure, it is more suggestive of a Podium or Pelopceus than of a 

 Chlorion. We must therefore conclude that while it is possible 

 that the description on page 941 of the twelfth edition of the 

 Systema Naturae may be of this insect, the evidence from 

 Catesby's figure does not sustain this, and that in any case the 

 description is without a tenable name. 



De Geer (Mem. hist. nat. Ins., Ill, pp. 585-589, pi. 30, figs, 

 I and 6, 1773) recognizes both of the Linnsean cceruleas, but 

 remarks of the one given only in the twelfth edition that it is 

 of mediocre size, and as he provides no name to take the place 

 of the preoccupied one his writings afford no assistance. 



Drury (111. Nat. Hist. Ex. Ins., II, p. 75, pi. 39, fig. 8, 

 1773) figures what is evidently the insect for which we are 

 seeking a name, and gives a fair description of it. But he calls 

 it Sphex ccer2ilea of Linnaeus, and refers to page 947 of the 

 twelfth edition — the wrong ccerulea — plainly an erroneous iden- 

 tification. 



Dahlbom (Hym. Eur., I, pp. 22 and 24, 1843) gives two 

 descriptions which need consideration. To one (p. 22) he 

 assigns the name Chalybion cyanetim, and to the other (p. 24) 

 the name Chlorion cyamuvi. Of these, the first can be thrown 

 out as not applicable in the present case, leaving Chlorion 

 cyaneum as the first available name to apply to our North 

 American Chlorion. 



Kohl (Ann. naturh, Hofmus. Wien., V, pp. 186-187, 1890) 

 distinguishes two species among the specimens of this in- 

 sect accessible to him, naming them Sphex {Chlorion') nearc- 

 ticus and 6". occultus. The chief differences between these spe- 

 cies are that in C. nearcticus there are no punctures on the col- 

 lar, those on the frons are finer than in C occultus, and the 



