556 FAUNA HAWAIIENSIS 



present in the islands. It is however very different from any of the other Hawaiian 

 forms. 



Hab. Oahu. Honolulu (Blackburn); and, as var. ?, Piptm-ns, back of Tantalus, 

 VII. 1900 (Perkins). 



Oligota, Gnatholigota subg. nov. 



This subgenus is well distinguished by the remarkable mandibles (PI. XVI. fig. 18). 

 It is most difficult to extend these parts after the specimen has been dried, and I am not 

 at all sure that the other species I have placed in the subgenus agree with O. lattfrons 

 in this respect. They are all apparently very rare insects. 



(3) Oligota {Gnatholigota) latifrons, sp. nov. 



Lata, brevis, nigra, nitida, pube minus obsolete parce vestita, antennis palpis 

 pedibusque testaceis. Long, ij mm. 



Very short, and the broadest of all the Nesoligota division; very like 0. glabra but 

 at once to be distinguished by the much greater development of the pubescence, which 

 although fine and scanty is conspicuous and beautifully regular. 



The species should probably be a distinct genus, the structure of the mandibles 

 being very peculiar (PI. XVI. fig. 18) and their relation to the epistome remarkable. 

 Six specimens. 



Hab. Kauai, Halemanu, v. 1895 (Perkins). 



(4) Oligota (GnatJtoligota ?) brcvicollis, sp. nov. 



Nigricans, antennis palpis pedibusque fusco-rufis; pube suberecta sat dense vestita; 

 thorace obsolete parciusque punctato, brevissimo ; antennis articulis 8° et 9° latissimis, 

 7° fortiter transverso. Long, i^ mm. 



The 4th and 5th joints of the antennae are bead-like, slightly broader than long, 

 6th broader transverse, the club very broad. Though much smaller than O. latifrons, 

 this species has a similar facies. Three specimens. 



Hab. Oahu, Pipturiis, back of Tantalus, vii. 1900 (Perkins). 



(5) Oligota {Gnatholigota) anomalocera, sp. nov. 



Picea, pube delicata sat dense vestita, antennarum basi pedibusque testaceis; 

 antennarum clava fusca, magna, et crassa et elongata. Long, i^ mm. 



Closely allied to O. brcvicollis, but readil)- distinguished by the very remarkable 

 antennae, the club of which is longer and more definite than in O. brcvicollis. The 



