84 VARIETIES. 



femora nigra, postica basi flava ; tibiae spinosse, fulvae extus, ma- 

 cula nigra : tarsi flavi apicibus nigris : alse anticae squamosae, 

 fuscae, venis margineque superiori nigris, maculaque elongata in 

 medio hyalina. 

 Habitat in Anglia rarissime : larva sub corticem Betulae albae et 

 Populi dilatatae victitat : imago diebus Junii et Julii in floribus 

 umbelliferis. 



I have proved elsewhere," I hope satisfactorily, that this is 

 the insect described by Linnaeus in the Systema Naturae, under 

 the name Sphinx VESPiFORMis.y 



POSITION OF THE GENERA. 

 I. 



VI. II. 



VII. 

 V. 111. 



IV. 



Art. XII. — Varieties. 



1. Genus Amphimalla, Lai. — Sir, Will you permit me to 

 avail myself of your pages, to inquire of Mr. Curtis, why he 

 suppresses the Genus Amphimalla of Latreille ? It appears to 

 me to be impossible to include in one genus, species the joints of 

 whose antennae do not agree even in number ; when Mr. Curtis 

 himself frequently makes the length of a joint of the antennae a 

 distinguishing character. I am. Sir, yours, &c. Scrutator. 



[Scrutator will observe we only publish his postscript : 

 his letter " On the State of the Collection of Insects in the 



" Vid. Preface to Sphinx Vespiformis, p. 6. 



y All information on the subject of this family of insects, whether new matter, 

 suggestion of improvement in description, detection of error, or of any other kind 

 whatever, will he thankfully received, and may be addressed to me " to the care 

 of the publishers of the Entomological Magazine." There is scarcely any group 

 in natural history of which the characters have hitherto been so loosely thrown 

 together, the relations so utterly unknown, or unattended to, and the synonyms 

 so perplexingly confused, as the one now illustrated ; and, although I have taken 

 considerable pains to be correct, I cannot but anticipate that some errors have 

 still crept in. 



