146 
Psyche 
[December 
The Synonymy and Relationships of the Ant Pseu- 
DOLASIUS BAYONI Menozzi. — The synonymy is as follows : 
Pseudolasius Bayonii Menozzi, 1924, Ann. Mus. Civ. 
Stor. Nat. Genova, 51 :224, figs. 5, 6, worker max. Type 
loc. : Bugala, Sesse I., Victoria Nyanza. 
Pseudolasius hayoni, Menozzi, 1932, ibid., 56:115, 
worker min. from type collection. 
Pseudolasius myersi Weber, 1943, Bull. Mus. Comp. 
Zook, 93:389, pi. 16, fig. 35, worker. Type loc.: Lotti 
Forest, w. slope Imatong Mts., Equatoria, Sudan. New 
synonymy. 
Pseudolasius myersi occipitalis Weber, 1950, Amer. 
Mus. Novit., 1443:2; figs. 1-18, workers max., min., larva, 
egg, polymorphism, biology. Type loc. : Busnia, Uganda. 
New synonymy. 
When Weber described myersi and occipitalis, he was 
unaware of Menozzi’s bayoni descriptions of 1924 and 
1932, as is shown by his omission of this name from his 
list of the African Pseudolasius. Two minor workers 
from the bayoni type nest series have now been compared 
with two syntypes of myersi in the Museum of Compara- 
tive Zoology, and agreement is good. The race occipitalis 
appears from the description to be nothing more than the 
major worker of the same species. P. bayoni normally 
has six mandibular teeth counting the large apical tooth. 
Menozzi counted five teeth, but may have excluded the 
apical. Some specimens, especially in a series from near 
Epulu, Belgian Congo (T. Gregg), tend to have a small 
seventh offset tooth developed near the basal angle. The 
related P. gowdeyi Wheeler is larger and usually has five 
mandibular teeth, although occasionally a minute sixth 
intercalary or basal tooth is present. — W. L. Brown, Jr., 
Museum of Comparative Zoology, Harvard University. 
