COLEOPTERA 523 



each labelled '" Aeletes hasalis van" Comparison with the material collected by 

 Mr Perkins has necessitated the [^lacing of these four specimens in three different 

 species ; one is included in A. siibbasalis, another is placed with one specimen found 

 by Mr Perkins as A. zuaianaae. 



There remain two (one beino; that labelled simply A. hasalis) which, even though 

 there seems some uncertainty as to whether they really belong to the N. American 

 A. basalis, are quite distinct from either A. sitbbasalis or A. ivaianaae. The chief 

 distinction lies in the form of the keel of the prosternum (PI. XV. fig. 16) which is 

 broader (about twice as long as broad), oblong, with the striae almost parallel, so that 

 the breadth of the keel is almost the same throuyhout its length ; the front marein and 

 striae are thick. The form is depressed. The thorax and elytra have numerous some- 

 what aciculate punctures; the punctuation is coarser than that of A. siibbasalis, more 

 like that of A. waianaae. But unlike A. i^'aiaiiaae, the thora.x has a distinct rugosely 

 sculptured mid-basal area, bounded in front by a slightly arcuate line. The specimens 

 are rather larger than those of A. siibbasa/is and A. ivaiaiiaae. one being nearly i^- mm. 

 long. The mesosternum is impressed and somewhat rugosely punctured, metasternum 

 finely punctured, first abdominal segment scarcely punctured. Wings not examined. 



H.AB. Oahu ; neighbourhood of Honolulu (IJlackburn). 



(14) Acritiis gei-iiiaiiiis, sj). nov. 



A. subbasa/i ciffinh, sed prothorace et elytris tortius aciculatim punctatis ; prosterni 

 striis antice maoris diverorentibus. Lonsj. circa i mm. 



Another c^epressed form, with marked basal thoracic rugosity and impression. 

 Very like A. sicbbasa/is ; Ijut the thoracic punctures are aciculate as well as the elytral, 

 and the aciculate punctures as a whole are more marked ; the keel of the prosternum is 

 long and rather narrow as in A. siibbasa/is, but the striae diverge considerably, so that 

 the front margin is much wider than the base. More than one oblique stria can be seen 

 on either elytron ; the metasternum in both specimens is proportionately rather long. 

 Wings not examined. Two specimens, one distinctly smaller. 



Hab. Oahu. Kaala mts., 2500 ft. xii. 1S92 (no. ^t^); Mokuleiia, v. 1901, no. 752. 

 (Perkins.) 



(15) Acritits subbasalis, sp. nov. 



A. basalis var. .Sharp, Tr. Dublin .Soc. in. 18.S5, p. 226. 



Depressus, oblongus, piceo-testaceus, nitidus ; prothorace subtiliter punctato, ante 

 basin in medio transversim impresso ac rugoso ; elytris subtiliter aciculatim (vel interdum 

 simpliciter) punctatis; prosterno longo, angusto; mesosterno impresso et rugose punctato; 

 metasterno et segmento primo abdominis subtiliter nee dense punctatis. Long. 1 mm. 



Plate XV. fig. 17, pro- and mesosterna. 



