50 FAUNA HAWAIIENSIS 



(39) Odynerus minius, sp. nov. 



Forma fere praecedentis, niger, abdominis segmentis duobus basalibus postice 

 albido-mareinatis, alis infuscatis caeruleo-iridescentibus. Mesonotum nitidum, dense 

 fortiter punctatum. Abdominis segmentum secundum supra baud elevatum, leviter 

 convexum ; subtus, post sulcum fortissime elevatum, costis subobsoletis, depressione 

 nulla. (/ ? . Long. 7^ — 9 mm. 



Not a large species, agreeing for the most part in form with the preceding. 

 Black, with the apical margins of the first and second abdominal segments yellowish- 

 white. The first band narrow, the second much wider. 



Head and mesothorax densely and coarsely punctured, the surface of the latter 

 shining between the punctures. Propodeum with the surface smooth and shallowly 

 punctured. Basal segment of the abdomen evenly punctured ; second simple above, 

 slightly convex longitudinally ; beneath, extremely strongly and abruptly raised from 

 the sulcature (the greatest height attained being at the middle), the costae more or 

 less obsolete, the depression wanting, or represented only by an impressed line. 



Hab. Mountains of Kauai (3000 ft.). 



(40) Odynerus pseudochrotnus, sp. nov. 



Niger, capitis fronte, pronoto, mesopleuris, tegulis (saepe), scutello, et postscutello 

 rubro-notatis. Abdominis segmentorum margines apicales, (duorum basalium dis- 

 tinctissime), rubri. Alae fere hyalinae, marginibus anticis et apicalibus infuscatis. 

 Mesonotum cum scutello dense fortiter punctatum. Abdominis segmentum secundum 

 minus elevatum, fortiter convexum ; subtus, fortissime post sulcum elevatum, depres- 

 sione distincta, minus lata. (/?. Long. 6 — 8^ mm. (Plate L fig. 27 and 27a.) 



Black, with a median spot behind the antennae, another behind each eye, the 

 prothorax in front, a spot on the mesopleurae, a small one on the mesothorax near 

 the tegulae, one or more spots on the latter, part of the scutellum and postscutellum, 

 the hind margins of most of the abdominal segments (the first and second most widely), 

 and a line on the scape of the antennae of the c/, red. These markings vary a little 

 but are for the most part constant. Wings nearly clear, except along the margin, and 

 with no trace of blue iridescence. 



Apex of clypeus with a depression, but hardly emarginate. Mesothorax coarsely 

 and densely punctured, the scutellum closely but rather less coarsely. Propodeum with 

 shallow puncturation. Basal segment of the abdomen densely punctured ; second 



