I40 FAUNA HAWAIIENSIS 



very slightly shorter than head (seen from above), second segment nearly four times as 

 long as the first, three-fifths longer than the third. Pronotum one-fourth wider at base 

 than apically, twice as wide apically as long. Posterior femora twice as long as the 

 apical width of pronotum, 2^ times as long as wide. Posterior tibiae one-third longer 

 than femora. 



Long. i'8 — 2'4 mm., lat. max. elytr. i — \'2 mm. 



Hab. Oahu, N.W. Koolau, 2000 ft. (December: Perkins). Five examples. 



Opuna gen. nov. 



I have placed this provisionally in Halticaria, notwithstanding its well-marked 

 collar. It has the general appearance of an OrtJiolytus. 



Head short, dorsally viewed ; strongly declivous, convex, produced slightly roundly 

 in front of the eyes. Eyes slightly incumbent on the pronotum. Vertex basally 

 marginate. First segment of antennae short, not reaching to apical margin of the eyes. 

 Pronotum transverse, collared apically, the collar convexly rounded posteriorly. 

 Posterior coxae remote from the lateral margins of the abdomen, posterior femora 

 short, incrassate. No alar hamus. 



(i) Op2ina hawaiiensis, sp. nov. 



Plate V. fig. 29. 



Pale greenish testaceous with concolorous pubescence. Eyes blackish-brown, 

 tibiae black-spined. Second and third segments of antennae subequal ; vertex four- 

 fifths wider than the two eyes together, a little wider than apical margin of pronotum. 

 Base of pronotum three times as wide as apical margin. 



Long, nearly 2 mm., lat. 1-5 mm. 



Hab. S. E. Coast (January : Perkins). Two examples in poor condition. 



PsEUDOCLERADA, oren. nov. 



This may be regarded for the present as an aberrant Halticarian. Depressed 

 (at least in the macropterous form). . Head porrect, subequal in length to pronotum, a 

 little longer than wide across the eyes. Vertex subconvex, not impressed nor sulcate ; 

 subrectangular, a little divergent in front of the eyes (the interolateral margins of which 

 are subobliquely convex), produced triangularly in front of the insertion of the antennae ; 

 base carinately marginate. Eyes large. Bucculae short, not a third of the length 

 of the head beneath, which is narrowly, longitudinally carinate posterior to the bucculae. 

 Insertion of antennae nearer the eyes than to apex of vertex. Pronotum with an 



