HYMENOP TERA 2 1 



(9) Crabro {Solenitis) viandibjilaris, Smith. 



Crabro matidibtilaris, Smith, Proc. Linn. Soc. xiv. p. 677 %. 



Crabro deniicornis, Smith, (c/) I.e. p. 678. 



Crabro vtandibiilaris, Blackburn and Cameron, P. Manch. Soc. Vol. xxv. 

 (1885—86), p. 167. 



Niger, ^ clj'peo argenteo-piloso, postscutello (nonnunquam etiam pronoto, tuberculis, 

 abdominisque segmento secundo) flavo-notato, antennarum articulo sexto baud fortiter 

 dentato ; % antennarum articulo basali, mandibulis plus minusve, pronoto, tuberculis, et 

 postscutello flavo-notatis, clypeo aureo-piloso. ^%. Long. 7 — 10 mm. 



Black, the ? with the front of the scape of the antennae, the mandibles more or 

 less, a spot on each side of the prothorax, its tubercles, and a transverse spot on 

 the postscutellum, yellowish ; the </ generally has only the spot on the postscutellum, 

 rarely also the tubercles and prothorax and the sides of the second abdominal segment 

 with yellow markings. 



Male with the sixth joint of the antennae formed much as in the preceding species, 

 being but little produced at the apex. Clypeus clothed with silvery hairs, the head 

 above the antennae generally distinctly strigose and feebly punctured, but in small 

 examples the strigosity is sometimes obsolete, or nearly so. In the region of the 

 ocelli the puncturation is generally distinct though shallow ; the surface of the meso- 

 thorax is smoother than that of the preceding species, the puncturation very feeble. 

 Surface of the abdomen very finely rugulose, and with hardly visible puncturation ; 

 second ventral segment with the surface finely rugulose, and not highly polished, 

 with sparse scattered punctures. 



Female, clypeus with golden hairs ; head in front strigose and punctured, smoother 

 on the vertex posteriorly, with shallow but distinct punctures between and at the sides 

 of the ocelli. Mesothorax with shallow punctures, the surface somewhat smooth, 

 especially posteriorly, where it is even slightly shining (or at least less dull than in 

 front), as also the scutellum. Abdomen with grey pubescence ; second segment not 

 shining, rugulose, without distinct puncturation, beneath the surface is distinctly rugulose 

 and very sparsely punctured, except at the sides. Apical dorsal segment flat, its 

 margins but little raised, dull towards the apex, punctured, and more or less smooth 

 between the punctures towards the base. Wings quite infuscate in the (/, less so 

 in the ?. 



Hab. Molokai, Lanai, and Maui, on the coast and in the mountains at an 

 elevation of 3000 ft. 



This species is very closely allied to C. notostictiis /, but the puncturation of 

 the vertex of the head is more distinct, and the mesothorax smoother. The normal 



