138 FAUNA HAWAIIENSIS 



(19) Acalles monticola, sp. nov. 



Minus brevis, pallide squamosus, rostro piceo, antennis basi rufescentibus. Caput 

 cum basi rostri squamis depressis erectisque pallidis vestitum. Pronotum elongatum, 

 antice constrictum, obscurius 5-sulcatum, squamis pallidis depressis, nonnullisque nigris 

 erectis vestitum. Elytrorum pars basalis squamis pallidis vestita, nigro-punctata, post 

 media plaga transversali nigricante, quae maculam albidam, trans suturam positam, 

 continet, apice pallido; interstitiis 2° — 6° fortius aequaliter convexis, striis obscure grosse 

 punctatis. Femora omnia pallide squamosa, media parte late nigrocincta. Tibiae ad 

 basim nigro-squamosae. Long, (rostr. excl.) 3'5 mm. 



In this species all the interstices of the elytra are raised, except the first, which is 

 only slightly convex. There is very little difference between the convexity of the other 

 interstices, that of the 3rd being slightly less than the 2nd and 4th. 



Hab. Oahu. A single example taken in the Waianae mountains. 



(20) Acalles oahuensis, sp. nov. 



Minus brevis, pallide squamosus, rostro antennisque rufis. Caput squamis pallidis 

 depressis, nigrisque erectis, vestitum. Pronotum elongatum, antice subfortiter constric- 

 tum, 5-sulcatum, lateribus rotundatis, squamis pallidis nigrisque variegatum, aliisque 

 erectis nigris vestitum. Elytra squamis pallidis vestita, plaga magna basali nigra, 

 fasciisque post media duabus irregularibus transversis ornata, leviter striata, striis parum 

 distincte punctatis, interstitiis 2°, 4°, et 6° aequaliter elevatis, 1°, 3° et 5° baud convexis. 

 Femora cum tibiis ex majore parte squamis nigris vestita. Long, (rostr. excl.) 3 mm. 



A very distinct species, each of the elytra with three very well-marked longitudinal 

 costae, which continue the three ridges on either side of the thorax. The alternate 

 interstices are not at all raised or convex. 



Hab. Oahu. A single example taken in the Waianae mountains (2000 ft.). 



Chaenosternum Blackburn. 



( I ) Chaenosternum konamun Blackburn. 



Chaenosternum konanum Blackb., Tr. Dublin Soc. iii. 1885, p. 181. 

 Hab. Oahu. One example taken near Honolulu (Blackburn). 



