20 FAUNA HAWAIIENSIS 



the following joint, so that it does not form a conspicuous prominent tooth, as in 

 all the preceding species. Front of the head with rough, shallow puncturation, smoother 

 on the vertex behind the ocelli. Mesothorax and scutellum dull, with shallow obsolete 

 puncturation, but the punctures are more distinct in some examples than in others. 

 Mesopectus at the sides posteriorly with the carinae strongly elevated, forming a stout 

 prominent tooth when viewed from in front. Abdomen above somewhat shining ; 

 second ventral segment shining, remotely and distinctly punctured about the middle ; 

 4th and following segments flattened and depressed. 



Female with the clypeus clothed with golden hairs. Puncturation much as in the 

 </, but generally more definite, the mesothorax posteriorly and the front of the scutellum 

 being often more or less polished and shining. Abdomen with the second segment 

 above hardly shining, very finely, but rather distinctly punctured ; beneath it is very 

 highly polished, and has only a few scattered punctures on the middle portion, and a very 

 dense and minute puncturation on the lateral pubescent spots. Apical dorsal segment 

 nearly flat above, its margins very slightly raised, the surface more or less rough, 

 and punctured. Posterior tibiae with the spines well developed, and dark. Wings 

 subhyaline in both sexes. 



Hab. Kauai, abundant from the coast to 4000 ft. 



(8) Crabro [Solenius) notostictus, sp. nov. 



Niger, clypeo argenteo-piloso, pronoto cum postscutello abdominisque segmento 

 secundo flavo-notato, antennarum articulo sexto haud fortiter dentato. </. Long. 

 6"5 — 8 "5 mm. 



Van Abdominis segmento secundo nigro. 



Male allied to the preceding, having the antennae similarly formed. Mandibles 

 and scape of the antennae black, clypeus with silvery pubescence. Prothorax with 

 yellow spots, the postscutellum with a transverse one. The second segment of the 

 abdomen has a yellow band, sometimes broken into two spots or altogether absent ; 

 the other segments always black. The front of the head has the puncturation nearly 

 obsolete and shows, in certain positions, distinct but very fine strigosity. The meso- 

 thorax is dull and rugulose with hardly visible puncturation. The second ventral 

 segment of the abdomen with the surface evidently but very finely rugulose, and 

 a few scattered, rather large, subobsolete punctures about the middle, the sides with 

 the usual dense and minute puncturation. The following segments with their surface 

 quite dull. 



Female unknown. 



Hab. Mountains of Oahu, taken on several occasions. 



