91 
1935 ] 
Notes on Mycetophilidse 
Explanation of Plate VI. 
Figure 1. 
Figure 2. 
Figure 3. 
Figure 4. 
Figure 5. 
Clasper of Boletina grcenlandica. 
Hypopygium of Allodia ornaticollis . 
Hypopygium of Exechia aviculata. 
Hypopygium of Exechia pollex. 
Lateral view of clasper of Rhymosia triangularis. 
of clasper. 
A, arm 
Drawings made by D. B. Creager. 
A NEW NAME FOR LITHOMYRMEX CARP. 
(HYMENOPTERA) 
In my revision of the fossil ants (Bull. Mus. Comp. Zool., 
70 (1) : p. 36), which was published in January, 1930, I es- 
tablished the myrmicine genus Lithomyrmex for two species, 
rugosus and striatus, from the Miocene shales of Florissant, 
Colorado. Unfortunately, the same generic name was used 
by Dr. J. Clark a few months earlier for a recent species of 
ant, glauerti, from West Australia (Journ. Roy. Soc. W. 
Australia, 14: p. 36, 1929). I therefore propose the new 
name Eulithomyrmex for Lithomyrmex Carp. ( nee Litho- 
myrmex Clark, 1929), to include the two extinct species 
from the Florissant shales — F. M. Carpenter. 
