OUIENTAl. COLLKMBOLA. 121 



46. Idiomerus paUidus, gen. et sp. n. India (Tiavancoi'e). 



47. Cyphoderus simidans, sp. n. Burma. 



48. C. javanus Born. Java. (Burner ; loc. cit. p. 180.) 



49. Pseudoci/phoderus annandalei, gen. et sp. n. India (N.E. 



Madriis). 



50. Ciyphoderodes cei/loniciis HWw Ceylon. (Silvestri ; in Ter- 



niit. auf Ceylon von E. Eschericli, 1911, p. 245.) 



Sub-order SYMPHYPLEONA Born. 



Fani. S M I N T H U R I D ^ Lbk. 



Sub-fam. SminthuridintE Born. 



51. Sminthurides append ictdatus, sp. n, India (Bengal). 



Sub-fam, Couynephoriin^ Abs. 



52. Corynephoria jacobsoni Abs. Java. (Absolon ; Entom. 



Ztg. Wien, 26, 1907, p. 338.) 



Sub-fam. DiCYRTOMiN^ Born. 



53. Ptenothrix gracdicornis Schiiff., subsp. gibbosa Born. Java. 



(Bbrner; Mitt. Naturhist. Mus. Hamburg, 1906, xxiii. 

 p. 185.) 



IV. A Summary of General Conclusions. 



1 . Four genera and twentj'-seven species of Collembola are de- 

 scribed as new, and three species belonging to as many genera 

 were already known. Out of a total of thirty-one species, live 

 are Palsearctic, and were obtained above the limits of forest- 

 growth in the Himalayas. The remaining species are Oriental. 



2. The Palsearctic species are all referable to well-known genera, 

 and were not met with in the Oriental region. 



3. Among the Oriental species it has been found necessary 

 to erect four new genera, i. e. : — Idiomerus, Dicranocentroides, 

 Heteromuricus, and Pseudocyphoderus. The remaining species 

 all pertain to genera whose range extends into at least one 

 other zoo-geographical region. 



4. Among the new fornjs discovered, the most remarkable is 

 Heteromuricus cercifer, gen. et sp. n. It is unique among Collem- 

 bola in possessing a median cercus to the fifth abdominal segment. 

 A new sub-family — the Heteromuricinse — is proposed for its 

 reception. Pseudocyphoderus gen. nov., with a single species, is 

 described from the neighbourhood of Lake Chilka, where it 

 occurs in Termites' nests. 



5. The total number of Collembola known from the Oriental 

 region amounts to fifty-three species comprised within twenty- 

 seven genera. Of these only three genera, each with a single 

 species, are members of the sub-order Symphypleona. 



