250 [NoTeml>er. 



Ohs. Not closely allied to any other Oahuan s}>ecies. There is a 

 minute sinuation just hefore the hind angles of the pronotum rendering 

 these quite distinct, though there is no basal neck. Named after 

 Mr, George Carter, who, when Governor of the islands, was with me on 

 a collecting trip to the Waianae Mountains some A'^ears ago, when several 

 new species were obtained, 



11, — Metrothorax oahuensis Blackb. 



This pretty species, Avhich resembles Metromenus hilaris in the 

 unusually bright colour of the elytra, seems to be rare, and I have taken 

 but few examples. These were found at a very low elevation near Hono- 

 lulu, in fact below 1000 ft. The only other native beetle tliat could be 

 found there was the Longicorn GallitJimysus Jcoehelei. The spot where 

 they occurred happened to be free from the ant Pheidole megacepliala, 

 though it abounded in the surrounding neighbourhood. Probably 

 M. oahuensis was chiefly, if not solely, found at very low altitudes, 



12. — Metrothorax rotundicollis Sharp. 



This species, described from Molokai, appears to be unmodified in 

 the mountains of Oahu near Honolulu, It was first found there many 

 years ago at the roots of long grass on the summit of Mt. Tantalus, but 

 has since been obtained in other spots. It is certainly of very infrequent 

 occurrence on either island. 



13. — Nesocidium auratum, sp. n. 



Angustiim, elongatum, nitidissimum, aureo-viride, antennarum basi 

 rufesccute, pedibus atro-piceis. Pronotum nitidissimum, niiuutissime (vix 

 evidenter) rugulosum, ad basim paullo fortius sculpturatum. Elytra elon- 

 gata, -ovata, parum profunde piiuctato-striata, posterius laevigata, ante media 

 ibveis duabus vagis impressa. 



Hab. In montibus insulae Hawaii, juxta Kilaueam, inter folia marcida 

 occurrit. 



Ohs. This species most nearly resembles N. smaragdinum Sharp from 

 Molokai, but the comparatively feeble striation of the elytra with rows 

 of finer punctures, which are not in general so closely placed in the rows, 

 separates it with ease. 



Park Hill House, Paignton. 

 Odoher 1917. 



