68 
parasitize species of Sceliphron, and as the genus Sceliphron 
is known to occur in all zoological regions and the habits of 
many of the species are similar, it is fair to assume that if 
a Chrysidid parasitic on any species of this cosmopolitan genus 
was introduced into Hawaii it would easily adapt itself to the 
common species of the Islands. 
I have compared the specimens before me with the descrip- 
tions of all the species assigned to the subgenus Pentachrysis, 
and am unable to find any description with which they will 
agree. The new species seems to be closely allied to the Afri- 
can imops Gribodo, but the transfrontal carina is much more 
deeply emarginate than it is in that species. 
Chrysis (Pentachrysis) extraniens new species. 
Female. Length 9.5 mm. Clypeus shining, with sparse distinct pune- 
tures, the apical margin with a deep, broad angulate emargination; fron- 
tal basin closely and rather finely punctured; at the sides the punctures 
are somewhat confluent and the surface is striato-punctate; across the 
top of the frontal depression there is a low nearly straight transverse 
ridge and above this a stronger, more complete ridge which is angulately 
emarginate medianly, and when seen from above appears as a deeply 
emarginate transfrontal carina; the area between these two carinae pol- 
ished, impunctate; two irregular, raised lines extending dorsad of the 
frontal carina and enclosing the anterior ocellus in a large horse-hoof- 
shaped area; frons above carina and vertex with large, close punctures 
which are even closer in the postocellar area; posterior orbits with large 
punctures, the carina strong (less so dorsally) and extending to about 
the middle of the eye; malar space granular, its length subequal with 
the width of mandible at base (or length of pedicellum); antenna stout, 
the third joint subequal in length with four plus five, pronotum with 
its median length subequal with the medium length of the seutellum, the 
dorsal and anterior surfaces with large rather close punctures, the two 
surfaces not sharply separated, dorsally with a median longitudinal de- 
pression; pronotum longer laterally, the lateral and dorsal surfaces sep- 
arated by a sharp carina, sides shining but with large punctures dorsally ; 
scutum shining, with large punctures which are more widely separated 
than those of the pronotum; notauli straight, well-defined and foveolate; 
scutellum, postscutellum and middle area of propodeum forming a con- 
tinuous surface which is covered with large, close (somewhat more widely 
separated on scutellum) punctures; lateral-dorsal area of propodeum 
granular basally and punctured apically; upper part of mesepisternum 
with large, close punctures; sides of propodeum striate; tergites shining, 
with rather large, well-defined punctures which are separated by a dis- 
tance at least equal to their diameter; second and third tergites with an 
indistinct raised line medianly; the third tergite gently concave dorsally, 
