252 
Psyche 
[Vol. 90 
Antennal funicular segment 11 is longer than 1, 111 and all other 
funicular segments except the apical, and it is 2.5 times longer than 
its maximum (apical) width. No differentiated antennal club. 
Labrum with a sharp erect tooth at the apex of each labral lobe; 
no median labral tubercle. Palpi concealed, not seen. Mandibles as 
shown in Figure 1; apical tooth followed closely basad by 2 coarse 
denticles and a blunt tooth; middle tooth followed basad by a low, 
rounded basal angle. Strix (mandibular groove) well-developed 
from base to apex. 
Trunk long and robust; mesonotum longer than in loriai, but 
wider than long (L/W ~ 0.7). Metanotum present as a deeply 
impressed groove, widening laterad on each end. In side view pro- 
file, pronotum strongly convex, although transversely impressed 
just in front of the raised, cariniform posterodorsal margin; meso- 
notum feebly convex and sloping downward behind, but its anterior 
margin raised slightly above the posterior pronotal margin, espe- 
cially (as in the type) when the two somites are flexed against each 
other. Promesonotum (without cervix) and propodeum subequal in 
length; propodeum broadly convex from front to rear, with its de- 
clivity steeper than its dorsum, but passing into dorsum through a 
gentle curve. Mesopleural suture distinct and complete, moderately 
deeply impressed (more distinct than in M. loriai). Propodeal spira- 
cle elongate and oblique, its opening about IVi times longer than 
wide. 
Petiole (Fig. 12) loaf-shaped, longer than broad and longer than 
high; exact shape of subpetiolar process, if any, not determined 
because the extreme anterior end of the segment is hidden by the 
coxae. Gaster long, gently downcurved, with a distinct constriction 
between first and second segments; dorsally viewed, second seg- 
ments longer and a little wider than first. Sting long and strong, 
distinctly upcurved. 
Dorsum of head completely finely and regularly striate in a longi- 
tudinal direction, the striae mesal to and behind the eyes tending to 
curve slightly outward. Dorsum and declivity of trunk similarly 
striate, but in a transverse direction, arching on pronotum. Sides of 
trunk behind pronotum with similar, oblique striation, continued 
from the propodeal dorsum through a curve. Remainder of head, 
body and appendages smooth and shining, including mandibles, 
cervical border of vertex and sides of pronotum. Coarse, spaced. 
