COLEOPTERA 195 



It is not quite certain that this locality is correct. Some of Mr Koebele's speci- 

 mens were labelled " Hawaii " in the sense of the Archipelago. I should think it 

 probable that this species is really from Oahu. 



Anchotefflus, gen. nov. 



Alae minutae. Thorax marginatus, absque seta erecta. Elytra sculptura profunda, 

 regulari ; ad basin modice conspicue marginata. Abdomen suturis tantum modice 

 profundis. 



Type A. gracilis. 



Proposed for two species that are extremely rare, and apparently not closely related 

 to any other Hawaiian forms. The two species are very different in appearance. They 

 have no resemblance to Dcrobroscns and Broscoiiyimts which also are destitute of a 

 thoracic seta, but apparently are nearer to Dcropristus in which a seta is present at the 

 posterior angles. The internal portion of the basal margin of the elytra is not very 

 definite, especially in A. gracilis. The ventral sutures (of ^. gracilis) are normal. As 

 in Blackbtirnia and Dcropristiis, the coarse deep sculpture seems to replace the large 

 depressions that are seen on the 8th stria of other forms. 



The four genera Blackbnrnia, Deroprisiits, Atrachycucmis, and Anchoteffljts are 

 difficult to distinguish by good characters, though they are very different in facies. 

 Atrachycneiuis can be separated by its short legs (Plate VI. fig. 3). Dcropristus 

 (Plate VI. fig. i) has the elytra quite unmargined at the base. In Anchotefflus (Plate 

 VI. fig. 4) and Blackhurnia the elytra are margined at the base; the former has no 

 thoracic setae. The latter normally has, but they are usually removed. In that case 

 the genus may be recognised by the quite extraordinary sculpture, though this again is 

 usually covered up by an exudation. 



(i) Anchotefflus gracilis, sp. nov. 



Angustus, niger, antennis pedibusque piceis vel rufis ; prothorace angusto, basin 

 versus angustiore, angulis posterioribus obtusis, circa margines punctato ; elytris humeris 

 carentibus, sulcatis, sulcis fortiter punctatis. Long. 9 mm. 



Plate VI. fig. 4. 



Antennae and legs long and slender. Head narrow, shining, without punctures, 

 eyes prominent, very distant from the thorax. Thorax much narrower than the elytra, 

 lateral margin normal, behind strongly raised, front angles not at all prominent, hind 

 ancdes very obtuse ; near the margins there are coarse punctures and the disc is slightly 

 wrinkled. Elytra narrow, ovate, at the base the outline slopes inwards in a very gradual 

 manner, the inner portion of the basal margin rather indefinite : the grooves are broad 

 and regular, with narrow, strongly raised interstices ; in the grooves there are rather 

 large and deep punctures. The under-surface is very shining, except that the last 



