720 Dr. R. C. L. Perkins on 
ee 
Odynerus charadrophilus, sp. nov. 
Niger, fronte rufonotata, mesopleuris rufomaculatis, propodei 
lateribus rufis, scutello rufonotata. Abdominis segmentum primum 
utrinque macula rufa antice bilobata ornatum.  Alae infuscatae, 
caeruleo-iridescentes. Clypeus subtilissime punctatus, apice extremo 
laevi, deplanato, haud emarginato, rons dense, nec profunde, 
grosse punctata, subnitida. Mesonotum subnitidum, fortiter nec 
remote punctatum, interstitiis sparsissime et perinconspicue punc- 
tulatis. Scutellum distincte, sat aequaliter, mesonoto subtilius 
punctatum. Propodeum remote punctatum. Abdominis segmentum 
primum minus breve, parte basali, a latere visa, rotundata, haud 
fere recte verticali, distincte nec dense punctatum. Segmentum 
secundum dorsale a basi fortius elevatum, obsolete subtiliter 
punctatum ; ventrale post costas (satis fortes) anguste depressum, 
depressione male definita. Abdomen supra nitidum. 
?. Long. ad apicem segmenti 2 abdominalis 8 mm. 
Hab. Molokai, 3,000 ft. 
Obs. Almost exactly resembles 0. petrobius superficially, 
and is found in company with that species and O. micro- 
demas, but it is not closely allied to these and is a very 
distinct species. 
Odynerus hylophilus, sp. nov. 
Niger, opacus, fronte rufonotata, mandibulis et apice clypei rufis, 
abdominis segmento primo utrinque rufomaculato, secundi dorsalis 
lateribus rufis, ventralis basi utrinque rufomaculata. Clypeus 
subtiliter punctatus, apice leviter dentato-emarginato. Frons pero- 
paca, grosse subobsolete. Mesonotum opacum, subgrossim, remote 
nec profunde punctatum, puncturatione interstitiali vix videnda. 
Propodeum, a fronte visum, conspicue emarginatum, peropacum, 
haud vel vix punctatum, lateribus marginatis. Abdominis segmen- 
tum primum, a latere visum, fortiter fere aequaliter curvatum, vix 
nitidum, remotius punctatum. Segmentum secundum dorsale 
fortiter tuberculatim-elevatum, ventrale post costas distincte sat 
fortiter impressum, depressione haud perlata. Alae fortiter infu- 
scatae, caerulo-iridescentes. 
¢. Long. ad apicem segmenti 2 abdominalis 7 mm. 
Hab. Hawaii, in company with O. rubropustulatus, 
obscurepunctatus and crypterythrus. Most like the latter, 
but the structural differences are so important that it is 
very distinct and the alliance doubtful. 
