558 
Psyche 
[Vol. 92 
The examinations of C. texens, C. gombaki and C. overbecki 
were made with the aid of a binocular microscope; the measure- 
ments of the animals were made at a magnification of 65X. Scan- 
ning electron micrographs of C. texens and C. gombaki, presented 
as part of this article, were taken by a Hitachi S 500. 
The following abbreviations are used below (measurements as in 
Bolton, 1977): 
TL: total length. The total outstretched length of the individual 
from the mandibular apex to the gastral apex. 
HL: head length. The straight-line distance between the anterior 
clypeal margin and the mid-point of the occipital margin in 
full-face view. 
Cl: cephalic index = (HW X 100)/ HL 
SL: scapus length. The straight-line length of the antennal scape 
excluding the radicle. 
SI: scapus index = (HW X 100)/ SL 
PW: pronotal width. The maximum width of the pronotum in dor- 
sal view. 
OD: ocular diameter. The maximum width of the eyes. 
All measurements are expressed in millimeters. 
The critical reading of the manuscript by Dr. C. Baroni Urbani 
and Dr. P. van Voris is gratefully acknowledged. 
Results and Discussion 
Characteristics of the Subgenus Karavaievia Emery 1925 
The description of the subgenus Karavaievia follows that of 
Emery (1925). This description is mainly a listing of characters 
which are partly superficial but which serve to distinguish this sub- 
genus from all the others (Emery, 1925). A thorough diagnosis of 
‘ Karavaievia ’ would require a revision of the whole genus Campo- 
notus, which is urgently needed but which is not the intention of this 
paper. Thus, the subgenus Karavaievia is in a preliminary state like 
the classification of the genus Camponotus itself. 
According to Emery (1925) Karavaievia is closely related to the 
subgenera Myrmamblys, Myrmoteras, and Myrmoplatys. The most 
important difference between these subgenera and Karavaievia is 
the nearly complete absence of any dimorphism in the worker caste 
of the Karavaievia species. Specific for Myrmoplatys is the scapal 
