60 SOUTHERN CALIFORNIA ACADEMY OF SCIENCES 
ANTS FROM CATALINA ISLAND, CAL. 
By William Morton Wheeler. 
Of the eight species of Formicide collected on Catalina 
- Island, California, by Prof. C. F. Baker and wife, four present 
subspecifie or varietal peculiarities, probably of geographical 
significance, though all the forms are represented on the adja- 
cent mainland. Of especial interest are the new variety of 
Monomorium minutum with wingless, ergatoid queens, and the 
new subspecies of Henamina patruelis, a form originally de- 
seribed and hitherto known only from the Island of Guadalupe, 
off the coast of Lower California. 
1. Monomorium minutum Mayr, var. ergatogyna, var. nov. 
I base this variety on a number of workers and eight females 
from three different colonies. The workers differ from those 
of M. minutum var. minimum Buckley, common over a large 
portion of the United States, only in size, being only 1.5 mm. 
in length, whereas the workers of minimum are usually 2.—2.2 
mm. long. All the female specimens are ergatoid, 1. e., they 
show no traces of wing insertions, they are smaller (only 3.25— 
3.) mm.) and have smaller eyes and more slender thoraces than 
the winged females of the typical form, which measure 4—5 
mm. It would be interesting to know whether these wingless 
females, taken from three different nests, are the only type of 
female produced by this variety. If such is the case, they 
probably represent an adaptation to life on an oceanic¢ island 
comparable to the well-known apterous conditions in the in- 
sects of Madeira, Kerguelen, etc. I have recently received 
from Mrs. Annie Trumbull Slosson several specimens of Mono- 
morium floricola Jerd. collected at Biscayne Bay, Florida. 
Among these are three ergatoid females presenting the same 
peculiarities as the specimens of M. minutum above described. 
2. Solenopsis texana Emery, subsp. cataline, subsp. nov. 
Several workers and two dedlated females differing from the 
typical Texan form in the more uniform coloration and the ab- 
sence of any infuscation on the gastric segments of the female. 
In the latter sex the node of the petiole is decidedly more com- 
pressed antero-posteriorly, and the greatest width of this seg- 
ment when seen from above is behind instead of at the middle, 
as in the female of the typical texana. The postpetiole is also 
shorter and its angles sharper than in the typical form. The 
pelosity of the worker is sparser and somewhat less conspicu- 
ous. The nodes of the pedicel are of very nearly equal breadtn. 
3. Pheiodle hyattii Emery. 
Soldiers and workers from four different colonies and all 
belonging to the typical yellow Californian form. 
