PANGONIA. 



GENERIC CHARACTER. 



Wings divaricated ; antennae porrect, approxi- 

 mate, three-jointed ; first joint cylindrical, second 

 cyathiform ; third joint elongated, subulate, eight- 

 ringed ; proboscis elongated, exserted ; stemmata 

 three ; abdomen of seven segments. 



OBSERVATIONS. 



This genus is very closely allied to Tabanus, 

 the species having a close resemblance to each 

 other; but, on accurate comparison, we shall 

 agree with Latreille in the propriety of separat- 

 ing them. In fact, the Tab an i are altogether 

 destitute of the stemmata, and are very different 

 from insects of the present genus in several other 

 characters, such as the form of their antennae, 

 the disposition of the nervures of their wings, 

 and the comparative length of their proboscis. In 

 some of the species, the stemmata are so small 

 as to require a lens to discover them, but they 

 certainly exist in all. Six species are described 



plate xxxiii. 



