34 



RESEARCH IN PROTOZOOLOGY 



The latter group is constituted by the highest family, the 

 TERMiTiD^, which has 1 121 species in ninety-seven genera. Many 

 of these termites contain no protozoa, while others, which have 

 some, nevertheless lack the large flagellate faunas of the more 

 primitive group. The difference is correlated with the fact that the 

 termites of the lower families feed upon wood while the ter- 

 MiTiD^ derive their sustenance from other sources than cellulose 

 alone, such as humus, fungi and the organic matter in soil. 



In the following outline of the classification of termites, a com- 

 plete list of genera is given in the first three families, but in the 

 TERMiTiD^ only those genera are listed in which some protozoa 

 have been observed. The number of known species in each genus 

 and subgenus is quoted from Emerson (1928) and this figure is 

 followed by one indicating the number of species which have been 

 explored for protozoa. 



Family mastotermitid^ Silv. 

 Genus Mastotermes Frogg. (i) 



(0) 



Family kalotermitid^ Banks 



Subf. HODOTERMiTiN^ Holmgren 

 Genus Hodotermes Hagen (21) 

 (2) 

 Subg. Hodotermes s. str. (6) 

 Microhodotermes S j 6 st . 



(9) 



Anacanthotermes Jacobs. 



(6) 

 Subf. TERMOPSiN^ Holmg. 



Genus Archotermopsis Desn. (i) 



(I) 

 Termopsis Heer (3) (2) 

 Hodotermopsis Holmg. (2) 



(o) 



Subf. STOLOTERMITIN^ Holmg. 



Genus Stolotermes Hagen (5) (0) 



Subf. KALOTERMITIN^ Holmg. 



Genus Porotermes Hagen (5) (i) 



Genus Kalotermes Hagen (42) 



(5) 



Epicalotermes Silv. ( i ) ( i ) 



Proneotermes Holmg. (2) 



(o) 



Neotermes Holmg. (70) 



(5) 

 Rugitermes Holmg. (9) 



(I) 

 Genus Cryptofennes Banks 



Subg. Cryptotermes s. str. (32) 



(4) 

 Planocryptotermes Light 



(I) (I) 

 Genus Procryptotermes Holmg. 

 (6) (o) 

 Eucryptotermes Holmg. (i) 



(0) 

 Calcaritermes Snyder (8) 



(0) 



Glyptotermes Frogg. (38) 



(3) 

 Lobitermes Holmg. (4) (2) 



Family rhinotermitid^ light 



Subf. PSAMMOTERMITIN^ Holmg. 



Genus Psammotermes Desn. (6) 

 (o) 



Subf. LEUCOTERMITIN^ Holmg. 



Genus Heterotermes Frogg. 



(Leucotermes Silv.) (21) 



(2) 

 Genus ReticuUtermes Holmg. (14) 



(4) 



