12 FAUNA HAWAIIENSIS 



The species for which this genus is formed are evidently allied to those of the 

 genus Nesomimesa, but the females present peculiar and striking characters, and the 

 males are not difficult to distinguish. In the former sex the antennae are more 

 strongly clavate, the cheeks are not armed with spines, the clypeus is greatly raised, 

 and exposes the whole or a great part of the large labrum, and the posterior tibiae 

 and tarsi are much more densely spinose. In both sexes the petiole of the abdomen 

 is very distinctly carinated, and in some of the species is extraordinarily developed. 

 The males may further be known by the greater development of the raised lines 

 on the propodeum. 



(i) Deinomimesa ferox, sp. nov. 



Nigra, sparsim minus distincte punctata, antennarum articulis apicalibus subtus 

 fulvescentibus, alls subinfuscatis. Mesopleurae subopacae. Abdominis segmentum 

 primum fortiter et acute carinatum. Clypeus % in medio margine fortiter emar- 

 ginato. (/?. Long. 8— 13 "5 mm. (Plate I. figs. 3 — 3^5.) 



Male black, the face below the antennae, and the base of the mandibles, with 

 appressed silvery pubescence ; above, with longer pale hairs, the surface dull, without 

 definite puncturation. Antennae long, clavate. Mesothorax with some very feeble 

 indefinite punctures, scutellum somewhat shining, the mesopleurae dull. Wings more 

 or less clouded, the marginal cell and apical portion more deeply. Propodeum rugose. 

 Abdomen with the petiole flattened above at the sides, and with a sharp median 

 carina from base to apex, its surface dull, finely rugulose. The rest of the abdomen 

 shining, and impunctate. 



Female more robust than the <} , the clypeus strongly raised, and exposing the 

 large rugose labrum. The apex of the clypeus is deeply emarginate in the middle, 

 the mandibles are strongly curved. Antennae with the club more definite than that 

 of the cf, the apical joints very wide in proportion to their length, the third joint 

 slender, and very long. Mesothorax with feeble indistinct punctures, the mesopleurae 

 dull. Propodeum more or less rugose, but the raised lines are not numerous, the 

 posterior concavity is large and deep and bounded by strongly raised lines. Inter- 

 mediate and posterior tibiae with dark spines, the posterior metatarsi spinose above, 

 beneath, and outwardly. Abdomen with the petiole very wide, dull and rugulose, 

 raised in the middle into a great carina, which (at least towards the base), is not 

 very sharp above as is that of the d", and is gradually raised from the base to the 

 apex. Behind the petiole the segment is generally longitudinally grooved, but not 

 in all examples, and its surface is very smooth, shining and impunctate. Pygidial 

 area as in the genus Nesomimesa. 



Hab. Mountains of Kauai (3000 — 4000 ft.). 



