114 TERTIARY INSECTS OF NORTH AMERICA. 



tip and lower half of the wings being absent, as well as the head, prothorax, 

 and legs, it differs so much from the species of Parotermes, in the absence 

 of the submarginal vein and the great length of the abdominal appendages, 

 that it probably can not be associated with them generically. In size and 

 general appearance it agrees so fairly with the Tertiary species described by 

 Heer, referred to Hodotermes by Hagen, that I place the species provision- 

 ally in the same genus, from which (as from all other genera so far as I 

 know in which the structure of the wings would allow it to be placed), it 

 differs by the great length of its anal appendages. 



Length of body as preserved, 9 mm (probably it reached about 12) ; of 

 abdomen, 6 mm ; breadth of same, 4.5 mm ; length of fore wing, 23 ffim or more ; 

 of abdominal appendages, 1.25 mm ; breadth of same, 0.3 mm . 



Florissant. One specimen, No 6010. 



3. EUTERMES Heer. 



The remaining species fall into the division of Terrnitina in which the 

 scapular vein is unbranched, and it is uncertain whether they should fall in 

 Termes proper or in Eutermes, the veins below the scapular being in all 

 cases poorly preserved or wholly obliterated. The limited number of an- 

 tenna! joints in such as have these preserved sufficiently for examination, 

 and the occasional indication of a broad subscapular field in others, lead 

 rather to the presumption that they should be placed in Eutermes. Two 

 species have been found at Florissant, The genus has been well known in 

 a fossil state, four species having been described from Radoboj in Croatia 

 and five from Prussian amber. Indeed, the genus was first founded upon 

 fossil species, but it was soon seen that many living forms belonged to the 

 same group. The existing species, some thirty in number, belong almost 

 exclusively to the tropics, and especially to those of the southern hemi- 

 sphere. 



The two species of Eutermes which have been found at Florissant 

 may be separated by the following features : 



Table of the species of Eutermes, 



Head l>roader behind than in front, scarcely half as long again as broad ; pronotum semicircular, the 

 posterior curve uniform 1. E. fossarum. 



Head not broader behind than iu front, fully half as long again as broad ; pronotum very short, the 

 hind margin more or less truncate 2. E. meadii. 



