CONSTITUTION AND DEVELOPMENT OF TERMITES. 43 



another, and carries eggs and young with it. But the com- 

 plemental queens never change their situation, and are there- 

 fore not to be found in many of the dead trees inhabited by 

 the species in different stages. 



" If a detached offshoot established in a tree without royal 

 forms loses its communication with the main colony, it imme- 

 diately provides such forms in hundreds. New colonies of 

 Termes lucifugus arise in this way. 



" These phenomena depend entirely on the promptness with 

 which Termites guard against the want of royal individuals. 



" Calotermites readily receive strangers of the same species 

 into a nest, even a royal pair, if they are orphaned. Jealousy 

 is most conspicuously manifested between the royal forms, but 

 much less rapidly than in bees. 



APPENDIX I. 



The Parasitic Protozoa of Termitid^. 

 (Vol. 39, Plate 20.) 



I propose to complete the account of my investigations on 

 the protozoa Parasitic in Termitidse by a concise description of 

 the forms observed,' which all belong to the class of Flagellata. 



Calotermes flavicollis harbours two species alone, one 

 belonging to the family Cercomonadidse, Grassi, the other to 

 the Lophomonadidae, Grassi. 



In Termes lucifugus I have been able positively to 

 determine six species, of which two belong to the Lophomona- 

 didae, two to the Cercomonadidse, and the last two to a new 

 family, Pyrsonymphidse, mi hi. 



Adopting as far as possible the nomenclature employed by 



' Similar parasites have been observed wherever Termites are found. Thus 

 Leidy ('Proc. Ac. Sci. Phil.,' 1877 and 1881) and Saville Kent ('Manual of 

 the Infusoria,' ii, pp. 551 — 556, pi. xxviii) have published incomplete descrip- 

 tions of some species, and a new form has recently been described by Frenzel 

 ('Arch. f. mikr. Anat.,' 1891, pp. 301—316). [A paper by Seip ('Am. Mic. 

 Journ.,' ii, p. 288) is not referred to by Prof. Grassi.] These parasitic 

 Infusoria were indicated in Termes by Lespes. 



