56 
Psyche 
[March 
2. Tyloides sharp longitudinal carinae on flagellomeres 11 or 12 
to 19, those of 12 or 13 to 17 or 18 extending more or less 
the length of their segments; mesopleuron and lower meta- 
pleuron largely with medium-sized coarse punctures that 
mostly are separated by less than 2.0 their diameters or 
sometimes in part on metapleuron and on mesopleuron in 
front of speculum with puncto-reticulation to more or less 
regular longitudinal wrinkling; mesopleuron black with white 
on subalarum and sometimes one or two whitish blotches on 
lower 1/4 above sternaulus 21. D. introita (Cresson) 
Tyloids often very faint and not extending nearly the length 
of their segments, at most flagellomeres 12 to 15 with sharp, 
carinate tyloids reaching 0.4-0. 6 their length; mesopleuron 
and lower metapleuron with small to tiny rather weak punc- 
tures separated in general by 2.0 or more their diameters 
and without wrinkling or puncto-reticulation, except some- 
times above speculum or just along pleural carina; 2/3 or 
more of mesopleuron white 3 
3. Malar space 0.80-0.85 as long as basal width of mandible; 
scape entirely black; propodeum apicad of basal trans-carina 
uniformly pale fulvous 20. D. pareia n. sp. 
Malar space 0.48-0.58 as long as basal width of mandible; 
scape largely white below; propodeum apicad of basal trans- 
carina white with black markings 4 
4. Temple 0.38 as long as eye at upper 1 /3; pronotal scrobe with- 
out wrinkles except for the short epomia; juxta-coxal carina 
absent; propodeal cristae large, strongly projecting, bluntly 
triangular; propodeum entirely black basad of basal trans- 
carina 19. D. aspila n. sp. 
Temple 0.50-0.60 as long as eye at upper 1/3; pronotal scrobe 
with numerous wrinkles in addition to the scarcely differ- 
entiated epomia; juxta-coxal carina almost complete but ir- 
regular at least on apical 1/2; propodeal cristae weakly cu- 
neate, low, broad, and scarcely projecting; propodeum basad 
of basal trans-carina black with a large white sublateral 
blotch 18. D. picta Townes 
5. Tyloids sharp carinae extending full length of several segments; 
lower metapleuron with moderately coarse punctures ... .6 
