1915] New Chalcidoid Hymenoptera 281 
4. Psylledontus secundus new species. 
Female: Length, 0.60 mm. 
Differs from the genotype in being smaller, the scutellum is scaly 
not very finely longitudinally striate, funicles 2 and 3 more transverse, 
also funicle 4; the fore wings are distinctly narrower and the middle 
tibize yellow except a band just below the knee, the caudal tibiz more 
broadly yellow at tip. The axilla are separated by a short carina in 
both species and the club is obliquely truncate from about half way up 
one side. Compared with types of the genotype. Face rather strongly 
inflexed. 
Described from four specimens reared at Perideniya, 
Ceylon (Rutherford) from gall-making psyllids (nymphs). 
iivpe::  Catalocne to, J49578,,.Wi.90: N. M.; a female on a 
tag and a slide bearing the head and fore wings. Three females 
on tags, same number as paratypes. 
5. Elasmus mexicanus new species. 
Female: Length, 2.60 mm. 
Dark metallic blue, the scape, membraneous apex of the postscu- 
tellum, tibiz, tarsi, knees and ends of the femora (all of cephalic femora 
except at base), yellow. Fore wings hyaline but with a large rounded 
substigmal spot cf fuscous. Hind tibiz with the dorsal black spines 
arranged to form a V just under the knee, then two large, long-ovate 
areas, then an oblique line across near tip. Head very finely scaly and 
with the usual scattered punctures; pronotum and scutum densely 
hairy, the scutellum naked (but two or four large bristles may be 
missing in this specimen), scaly. Propodeum plane, delicately scaly. 
Abdomen compressed distad, subglabrous, conic-ovate. Middle tibiz 
from dorsal or lateral aspect with a narrow marginal stripe of black 
(each margin) formed by dense black spines. Hind tibial spurs double. 
Hind coxze scaly, the femora longitudinally lined, the lines far apart. 
The long postmarginal vein with fuscous along it. Funicle 1 somewhat 
over twice longer than wide, 3 somewhat shorter, distinctly longer than 
the pedicel which is a half longer than wide at apex. Second ring-joint 
large, the first very short. Mandibles 7-dentate. 
Described from one female in the U. S. N. M., collected at 
San Rafael, Jicoltepec, Mexico. 
Type: Catalogue No. 19379, U.S. N. M., the specimen on 
a tag, fore wing and head on a slide. 
6. Elasmus marylandicus new species. 
Female: Length, 2.15 mm. 
Dark metallic green-black, the abdomen deep orange yellow, the 
postscutellum (except at apex) lemon yellow; distal tips of cephalic 
coxee and femora and all tibize, pale dusky yellow; rest of legs con- 
colorous; black spines on dorsal aspect of caudal tibiz arranged in three 
