195? ] Brown — Ant Genus Strumigenys 111 
very few microtrichia, especially near bases ; hindwing with 
4 subapical hamuli. 
Strumigenys ecliptacoca sp. nov. 
Holotype worker: TL 2.8, HL 0.68, ML 0.35, WL 0.71; 
Cl 65, Mi 51. Antenna, scape L 0.47, funiculus L 0.62, api- 
cal segment 0.35. Head in facial view shaped much as in 
S. mayri, but rather narrow and with periocular areas more 
as in godeffroyi, i.e. without distinct preocular notches. Oc- 
cipital lobes rather narrowly rounded behind, occipital ex- 
cision broad and fairly deep, lateral borders of lobes broad- 
ly and evenly rounded. Dorsal surface of head evenly con- 
vex in both directions, without appreciable sulci or depres- 
sions in occipital area. Eyes rather large and convex, but not 
prospicient, the principal axis directed laterally. Preocular 
area only feebly concave ; preocular laminae anterior to the 
concavity weakly convex in outline, as seen from dorsal 
view. Clypeus with anterior border medially impressed and 
strongly excised. Antennal scrobes indistinct, though not 
suddenly interrupted posteriorly; continuing above and be- 
hind the eyes to a distance equalling 2*/2 eye diameters, but 
traceable only with difficulty, if at all. Antennal scape very 
slender and curved so as to allow it to fit the curve of the 
side of the head when retracted, as in szalayi group. Funi- 
cular segment I slightly longer than Il-lll; II and III as 
broad as or slightly broader than long ; IV longer and stout- 
er than I, and nearly as thick apically as is the apical seg- 
ment at midlength; apical segment longer than I-IV taken 
together, slender and fusiform. 
Mandibles slender, depressed, feebly arcuate, their inner 
borders nearly straight from near base to preapical tooth, 
after which they curve evenly in to apical fork; extreme 
bases distinctly narrowed and bent slightly inward, their 
insertions separated and situated beneath the small lobes on 
each side of the clypeal excision. Shafts extremely slightly 
and gradually broadened from base toward preapical tooth, 
lying so as to diverge slightly from each other at full closure. 
Apical fork of two parallel slender spiniform teeth, the dor- 
sal tooth (l ca. 0.12) about IV 2 times as long as ventral 
tooth ; a single small, acute intercalary denticle present. Pre- 
