HYMENOPTERA 67 



iridescence. Clypeus deeply emarginate, the head above the antennae dull, and with 

 very shallow punctures. Mesothorax with the surface very dull, the puncturation 

 irregular, very feebly impressed, and somewhat fine, the interstices with minute 

 puncturation which is also very feebly impressed. Propodeum dull, the surface finely 

 roughened, the concavity somewhat rugose. Abdomen with the second segment 

 longitudinally convex, not otherwise raised from the base ; beneath, with the depres- 

 sion evident, but very shallow. 



Hab. Kona district, Hawaii, 4000 ft. Rare, 2 ^ taken; June and September, 

 1892. Closely allied to the preceding but easily known by the very dull mesothorax, 

 the less raised (or tuberculate) second dorsal segment of the abdomen, &c. 



{73) Odynerus insulicola. 



Odynerus insulicola, Blackburn, P. Manch. Soc. Vol. x.w. (1885-86), p. 163. 

 Odynerus nautartim, Dalla Torre, Cat. Hym. Fam. Vesp., nee de Saussure. 



Niger; baud nitidus, alis infuscatis, plus minusve caeruleo-iridescentibus. d" 

 clypeo, antennarum articulo basali, tegulis, postscutello, nonnunquam pronoto, tibiisque, 

 fiavo-notatis ; abdominis segmentis 2 basalibus postice flavo-marginatis. Colore varia- 

 bilis, sed clypeo semper plus minusve flavo-notato ; ? nigra, abdominis segmento primo 

 nonnunquam postice pallido-marginato. Clypeus fortius emarginatus. Frons capitis 

 remote, mesonotum inaequaliter, subtiliter punctatum. Abdominis segmentum secun- 

 dum haud elevatum ; subtus, depressione distincta, minus alta. </?. Long. 7 — 9 mm. 



Male with the clypeus almost entirely, or only a small spot on it, yellow. The 

 scape of the antennae, the tegulae, the apical margins of the first two abdominal 

 segments, the tibiae, and sometimes the prothorax and postscutellum have yellow 

 markings. Excepting that the clypeus has always (as it appears) at least a yellow 

 spot, all these markings may be wanting, and some of them at least, generally are. 

 Female black, with a minute spot behind the eyes, and sometimes the apical margin 

 of the basal segment of the abdomen pale. 



Clypeus distinctly, and usually somewhat angulately emarginate in both sexes ; 

 head above the antennae finely and remotely punctured. Mesothorax dull, finely and 

 irregularly punctured, the puncturation finer in the ? than in the (/. Propodeum 

 subobsoletely and somewhat rugosely punctured. Basal segment of the abdomen with 

 shallow, more or less even punctures ; second not raised from the base, covered in 

 fresh examples with fine sericeous pubescence ; beneath with the depression rather 

 wide, but shallow, meeting the apices of the costae obliquely. 



Hab. Molokai, Lanai, and Maui, on the coast, and in open country up to an 

 elevation of 3000 ft., but not in the forest. Dalla Torre in his catalogue refers this 

 species to O. nautarum, Sauss., but that species has ' le metathorax seul ponctue.' 



9—2 



