254 SMITHSONIAN MISCELLANEOUS COLLECTIONS [voL. 48 
Palpi blue and violet, segments 2, 3 and 4 with scattered golden 
scales and pale mauve apices. Second segment slightly shorter than 
fourth, third slightly longer; the fifth longer than the third and 
fourth together. Mesothorax with blue median line becoming green 
posteriorly and merging into the color of the scutellum. On each 
side of the blue median line a dull brown stripe from the front to 
the basal third. Well forward and close to the pale lateral stripe 
is a patch of very dark blue scales; behind this, along the basal half, 
is another stripe of dull brown. All these markings are obscured 
by a sprinkling of bright green scales. Over the roots of the wings 
are patches of brilliant blue scales. Abdomen blue, violet on the 
seventh and eighth segments. Light spots at the sides of some of 
the segments. Under side silvery with a median blue stripe, the 
eighth segment violet, the ninth witha silvery spot. Lateral hairs 
pale yellow, dark on the eighth and ninth segments. 
Legs deep blue and violet. Under side of femora silvery or pale 
golden. Hind tarsi with the fourth segment mostly white. 
Length, 7-9 mm. 
Type No. 9955, U. S. N. M. 
Locality: San Francisco Mts., Santo Domingo, West Indies 
(A. Busck). 
3 4,19. Bred from larve found in tree-holes. The male and 
female agree in tarsal markings and our specimens show no varia- 
tion. The difference in the marking of the thorax of the female 
are due to abrasion, the description of the male shows the appear- 
ance in perfect specimens. This is the only species we have seen 
in which the tarsal markings are identical in the two sexes. 
The description of portoricensis, as far as it goes, agrees with our 
species. The species is founded on a single male. Until we can 
compare specimens of both sexes from Portorico we assume the 
Santo Domingan form to be a distinct species. 
MEGARHINUS GUADELOUPENSIS new species 
Female.—Head pearly green and blue above, silvery at the sides 
and beneath. Antennz very slender; the second segment not 
stouter and more than twice as long as the third, without crest of 
erect scales. Palpi slender, cylindrical, violet, the apices of the seg- 
ments mauve; third segment laterally compressed, thickened at the 
apex, nearly twice as long as the fourth; fourth segment shorter 
than second. Prothoracic lobes bright blue. Mesothorax metallic 
green and blue, the two colors of about equal strength, the blue in 
a median line and at the sides. At the roots of the wings and on 
