176 
Psyche 
[Vol. 89 
Genus MYRMECOCYSTUS Wesmael 
Snelling (1976:22) quoted our characterization (1968:211) of the 
genus and compared the larvae of this genus with those of Lasius. 
Page 23: “I provided some erroneous identifications to the Wheel- 
ers. These may be corrected: dugubris— cr eight oni; * mojave’=testa - 
eeus; ‘ semirufus'—kennedyi (Calif.) and depilis (Ariz.)” 
Page 7: “These data, albeit fragmentary, seem to indicate that 
protein, such as that derived from the tissues of other insects is 
essential for larval development.” Page 6: “The insect fragments are 
placed among the larvae and these must fend for themselves. I have 
seen no indication that larvae of these species are fed by tro- 
phallaxis.” 
Page 8: Larvae are subject to desiccation; hence they are to be 
found in the upper chambers of the nest only in the evening and 
early morning. When the surface begins to warm up the brood is 
removed to deeper chambers. 
Genus PROFORMICA Ruzsky 
Profile pogonomyrmecoid. Integument of venter of anterior body 
somites and of portions of labium, maxilla and labrum papillose. 
Body hairs mostly with bifid tip. Antenna large. Head hairs few, 
with 2- or 3-branched tip. Labrum large and subrectangular. 
Mandible ectatommoid, with one medial tooth. 
The specialization index is 18. 
Proformica ferreri Bondroit 
Length (through spiracles) about 3.7 mm. Profile pogonomyrme- 
coid (i.e., diameter greatest near middle of abdomen, decreasing 
gradually toward anterior end and more rapidly toward posterior 
end, which is rounded; thorax more slender than abdomen and 
forming a neck, which is curved ventrally). Anus posteroventral and 
with a small posterior lip. Leg, wing and gonopod vestiges present. 
Spiracles small and decreasing in diameter posteriorly. Integument 
of venter of anterior somites papillose; dorsal surface of posterior 
somites sparsely spinulose, the spinules minute and in short to long 
transverse rows. Body hairs sparse, moderately long (0.024-0.07 
mm), with simple, bifid or multifid tip. Cranium suboctagonal, 
slightly broader than long. Antenna large, with 3 (or 2) sensilla, each 
bearing a spinule. Head hairs few, short (0.013-0.04 mm long), 
unbranched or with bifid tip. Labrum large, subrectangular, slightly 
