HYMENOP TERA 



.^1 



number of new forms rendering the old descriptions of little use. The measurements 

 of Odynei'HS are taken from the front of the vertex of the head to the apical margin of 

 the first abdominal segment, instead of to the apical extremity of the abdomen. 



(i) Odynerus venator, sp. nov. 



Niger, minus robustus, fronte inter antennas flavo-maculata, segmenti primi 

 abdominis margine apicali saepe pallido, alis infuscatis et violaceo-iridescentibus. 

 Clypeus leviter dentato-emarginatus. Mesonotum minus fortiter densissime rugoso- 

 punctatum. Segmentum abdominis secundum a basi fortiter elevatum. Long, (a 

 fronte usque ad apicem segmenti 2' abdominis) c/ 7 — 9, ? 9 — 12 mm. 



Black with a small yellow spot between and just behind the points of insertion 

 of the antennae, and another behind each eye near the vertex ; the apical margin of 

 the basal segment of the abdomen often narrowly yellow, or testaceous. Clypeus 

 with the apex dentately emarginate very feebly in the ?, more strongly so in the cT ; 

 head above the antennae with shallow rugose puncturation. Mesothorax dull, somewhat 

 finely and very closely rugosely punctured ; wings infuscate, with violet iridescence. 

 Propodeum quite dull, impunctate or nearly so. Abdomen with the basal segment 

 shallowly punctured, rather more deeply and closely in the </ than the ? ; second 

 much raised from the base, the highest point being about one-third the length of the 

 whole segment from the basal margin, finely, evenly and remotely punctured to near 

 the apical margin, where the puncturation becomes close, coarse and shallow, as on 

 the following segments ; beneath, with its depression triangular and somewhat deep, 

 meeting the apices of the costae ; at the sides the segment is raised from their 

 apices to about the height of its basal portion. 



H.\B. Hawaii, Kona and Kau districts (2000 to 4000 ft.). 



(2) Odynerus erro, sp. nov. 



Praecedenti forma et puncturatione simillimus,' sed thorace toto nitido distinctis- 

 simus. ?. Long. 11 mm. (Plate I. fig. 12.) 



Black and shining with a median spot just behind the antennae, another behind 

 each eye near the base, and the sides of the apical margin of the basal .segment of 

 the abdomen, pale. Clypeus with the apex dentately emarginate ; head above the 

 antennae dull with shallow, close and rugose puncturation. Mesothorax shining; 

 densely, subrugosely punctured, the puncturation consisting of scattered larger punctures 

 (which are not coarse), and a system of smaller punctures which in this species is 

 extremely strongly developed, so that the difference between the two systems is much 



