56 



FAUNA HAWAIIENSIS 



and somewhat largely punctured. Mesothorax irregularly punctured, the punctures 

 closer in front and much sparser posteriorly, the surface smooth with minute inter- 

 stitial puncturation visible, but by no means distinct. Propodeum with the concavity 

 densely punctured. Basal segment of the abdomen coarsely, closely, and rugosely 

 punctured ; second evidently, but not very strongly, raised from the base ; beneath, 

 the depression shallow, the segment at the sides abruptly raised above the apices of 

 the costae, to a height about equal to that of its basal portion. 



Hab. Mountains of Molokai (3000 ft.), i i. 



(50) Odynerns rubritiiictus. 



Odynerus rtibritinchis, Smith, J. Linn. Soc. xiv. p. 679. Blackburn and Cameron, 



P. Manch. Soc. Vol. xxv. p. 155. 

 Odynerus sandwichensis, Dalla Torre, Cat. Hym. Fam. Vesp. (nee Saussure). 



Niger, pronoto nigro, fronte, tegulis, mesopleuris, scutello saepe, postscutello 

 et propodeo rubro-notatis ; abdominis segmento primo fere toto rubro, secundi margine 

 apicali lateribusque rubris. Caput supra antennas cum mesonoto nitidum, et grosse 

 punctatum. Abdominis segmentum secundum convexum, vix elevatum. c/ ? • Long. 

 5 — 8 mm. 



Black, the wings infuscate, with a blue or violaceous iridescence. The head in 

 front, the tegulae, mesopleurae, the scutellum often, the postscutellum, and propodeum 

 have red markings. The prothorax is black. Basal segment of the abdomen entirely 

 or almost entirely, the apical margin of the second segment, and its sides, red. 

 Head and thorax shining, coarsely punctured. Basal segment of the abdomen with 

 close shallow punctures ; second segment rather strongly convex longitudinally ; be- 

 neath, at the sides, raised from the apices of the costae, the depression which is 

 moderately wide meeting them obliquely. 



Hab. Lanai, on the coast. Haleakala, Maui (4000 ft. or more). Not a rare 

 species. Referred by Dalla Torre in his catalogue to O. sandzvichensis, but probably 

 distinct. 



(51) Odynerus potamophibis, sp. nov. 



Niger, fronte, pronoto, mesopleuris, tegulis, scutello, postscutello, et propodeo 

 rubro-notatis. Abdominis segmentum primum fere totum rubrum ; secundum margine 

 apicali lateribusque suis rubris. Caput supra antennas cum mesonoto nitidum et 

 fortiter punctatum. Abdominis segmentum secundum vix elevatum ; subtus, depres- 

 sione costarum apicibus oblique occurrente. ?. Long. 7 — 8-5 mm. 



