H\ 'ME NOP TERA 2 5 



(15) Crabro {So/eiiius) abnorniis. 



Crabro abiiormis, Blackburn and Cameron, P. Manch. Soc. Vol. xxv. p. 168 

 (1885-86). 



This remarkable species is perhaps allied to S. curtipes, and probably might 

 well be separated generically from the other Hawaiian species. It differs from all 

 these in the abruptly incrassate fifth joint of the antennae, and the extremely long 

 tooth on the sixth. Although I repeatedly searched for it in the locality specified, 

 I never had the good fortune to meet with a specimen. 



Hab. Konahuanui, Oahu (2500 ft.) ; i c/ taken by Mr Blackburn. The ? which 

 he suggests as belonging to this i is more probably that of C. himidoveniris. 



Nesocrabro, gen. no v. 



Caput inter oculos latum, baud fortiter concavum. Fossae antennales ab oculorum 

 marginibus spatio distincto disjunctae. Clypeus pilis suberectis (baud metallicis) 

 vestitus. Antennarum <} articulus sextus subtus emarginatus, apice haud fortiter 

 producto. Alarum cellula submarginalis longe post medium, apicem versus, venam 

 recurrentem accipiens. Area propodei antica haud definita. Tibiae posticae spinosae, 

 tarsorum articulus ultimus fortissimus. Area pygidialis ? elongata, angustissima, 

 utrinque fimbriata. 



The species for which this genus is proposed appear to be allied to those which 

 are provisionally placed under the subgenus Solenius of Crabro. The face is unusually 

 wide between the eyes, and but little concave. The antennal fossae are separated 

 from the latter by a considerable space. The facets of the eyes in front are 

 comparatively fine. The clypeus is clothed with a fine suberect pubescence, instead 

 of the appressed silvery or golden hairs, so usual in Crabronidae. In the <^ the 6th 

 joint of the antennae is emarginate beneath, and slightly produced at the apex. The 

 ocelli form a trianMe, much widest at the base. In the winpfs the recurrent nervure 

 is received far beyond the middle (towards the apex) of the submarginal cell. The 

 anterior area of the propodeum is not defined. The front tarsi are simple, the posterior 

 tibiae spinose, the claw joint of the tarsi very large. Pygidial area of the ? elongate 

 and very narrow, fringed on each side with long hairs, its sides carinated. 



( I ) Nesocrabro co^npactus, sp. nov. 



Niger, thorace et abdomine albido-notatis, alls subhyalinis, abdominis segmentis 

 apicalibus haud rufo-pubescentibus. i antennarum articulo sexto subtus emarginato, 

 apice vix dentato. d"?. Long. 7-5 — 9mm. (Plate I. fig. 10.) 



p. F. H. 4 



