NATI/IWI. ENEMIES. 
37 
long as stigmata] ; post-marginal wanting. Median impressed line of meeosternnm 
very distinct; inetanotal carina distinct, rather short. Abdomen narrow , coinpi 
laterally, snhacuruinate. General color shiny black, with slight metallic reflections; 
flagellum, brown; all trochanters, distal end of all femora, all tibiae, and tarsi honey 
yellow; wing veins, brown, very distinct. 
Female. — Length (average). 2.1 mm. ; wing expanse, 3.2 mm.: greatest width of 
fore wing, 0.55 mm. Scape slender, pedicel ovoid, ring joint- very -mall: flagellnm 
rather short, but slightly compressed: club ovate; funicle joints snbeqnal in size, 
joint 3 rather shorter than 1 and 2, its length exceeding its width but tdigbtly. 
Abdomen narrow, flattened dorso- 
ventrally, prolonged to an acute ^ c « 
tip. 
Described from six males 
and seven females. 
Tetrastiches car inatus Forbes. 
A slender, smooth, dark steel-blue 
species, 2 mm. in length, with pale 
legs. 4- jointed tarsi and 8-jointed 
antennae. 
The head is very short, not wider 
than the somewhat slender thorax, 
impunctured. as are also the thorax 
and the abdomen. Eyes large, dark red, broadly elliptical, occupying the whole 
longitudinal diameter of the head and even encroaching upon its posterior surface. 
Front broadly bisulcate for the reception of the scapes of the antenna 1 . Antennae 
short, 8-jointed, joints very distinct, except those of the ovate club (three in num- 
ber), which are very closely compacted. Second joint shorter than the third, which 
is longer than the fourth and fifth, these being subequal. First and second joints of 
the club nearly equal, thicker than the preceding. Flagellum of the antenna- pale, 
provided with a few erect, black hairs and long appressed yellow ones. 
Prothorax is very short: the mesoscutum very long, narrowing posteriorly, where 
it is broadly truncate against the scutellum. regularly convex, minutely carinate 
longitudinally on the middle line : parapsidal grooves complete. Scutellum vaulted, 
with two longitudinal carinae. Abdomen of the female pointed, ovate, broadest in 
front of the middle, somewhat flattened above. 
Legs rather long, pale yellow; fore tarsi dusky, middle and hind tarsi dusky at 
tip; all the tarsi 1-jointed, first joint of front and middle tarsi shorter or do longer 
than the second, that of hind tarsi longest of all. 
The entire surface is very sparsely provided with coarse, yellowish hairs, longest 
and most numerous at the tip of the abdomen. 
Costal vein very stout, provided with unusually long hairs: stigma] vein short: 
postcoital nearly obsolete; do trace of median or snbmedian. 
This species was bred in our breeding cages from the 
made at Anna, Jnue 24. (Forbes.) 
Tetraslichus productus (from Riley). 
collections 
UTILIZATION 01 PARASITES. 
It may seem hardly necessary to devote so much attention to the 
parasites of an insect if it is not possible to so use them as to secure 
some practical control of the pest. That this fan be done by the 
proper recognition of the time of emergence of the parasites seems at 
