482 bulletin: museum of comparative zoology. 



Differs from N. riograndcnsis Miiller (type before me) in smaller 

 process, on front of head; the head is narrower than in N. fur Sil- 

 vestri. 



EuTERMES DEBiLis Heer. 



This species was described from specimens in gum-copal, and Hagen 

 identified it with specimens from Porto Rico. I have designated 

 it as the type of the genus.^ It is a Microcerotermes and thus Eutermes 

 will replace that name. The species is closely related to M. struncki 

 from South America (types of which are before me). It occurs more 

 commonly in Panama, and in a paper on Panama termites I describe 

 the soldier and adult. Doubtless Eutermes theobromae Desneux, 

 from St. Thomas, is the same species. 



Nasutitermes. 

 Soldiers. 



1. Head with about ten or fewer hairs 2 



Head with many more hairs 5 



2. Head with ten hairs, two each side near vertex; color of head pale. 



i7iterrnediiis. 

 Head mth six or less hairs, one each side near vertex; color darker 3 



3. Four distinct hairs above base of nose, nose. much shorter than head. . . .4 

 Hairs above base of nose very small, nose nearly as long as head which is 



pale hubbardi. 



4. Head a httle longer than broad, smaller, abdomen more or less brown 



above morio. 



Head about as broad as long, larger, abdomen yellowish above . . sanchezi. 



5. Head pale yellowish ripperti. 



Head brownish 6 



6. Head blackish brov»n, not hairy on the posterior sides pilifrons. 



Head reddish brown, hairy all over, even on posterior sides, shorter nose. 



creolina. 

 Winged. 



1. Wings blackish; thorax blackish; ocelli more than diameter from the eye. 



morio and sanchezi. 



Wings and pro thorax more yellowish; ocelli less than diameter from the 



eye 2 



' Several authors have previously selected a type-species for Eutermes; but in each case it 

 has been a species not originally included in the genus. I have therefore selected the species 

 most fully described by Heer, and the one species not fossil. 



