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XIX. On some Longic.orn Qo\eo]itQr?^ from tlie Hawaiian 

 Islands. By D. Shaep. 



[Eead June 5th, 1878.] 



I SHALL record in this paper the , species of Longicorn 

 Coleoptera (^Ceramhycidce, Munich Cat.), found by the 

 Rev. T. Blackburn in the Hawaiian Islands, and describe 

 the new forms. The species altogether are nine in num- 

 ber, and although when all the islands of the group have 

 been carefully searched there will almost certainly be some 

 additional species discovered, yet as the Cerumbycidce 

 form one of the best known of the families of Coleo])tera, 

 it will be worth while to see what light these insects throw 

 on the nature of the fauna of this isolated group of islands. 



My very imperfect knowledge of this enormous family 

 of beetles would not justify any considerable reliance being 

 placed on my views on this point, but as I have received 

 from my friend H. W. Bates, the most Avorthy present 

 President of the Society, considerable assistance in the 

 study of these specimens, I feel sufficient confidence to 

 venture on some provisional observations. 



The species are, as I have said, altogether nine in 

 number, and I will remark on them seriatim. 



1. Parandra puncticeps appears to be a very distinct 

 species of a highly lemarkable genus ; the PurandrcB are, 

 in fact, the least differentiated of the Longicorn s ; that is 

 to say, the characteristics of the Longicorns are on the 

 whole less developed in these insects than they are in any 

 others that are generally admitted as forming part of the 

 family. 



2. Stenocorus simplex, Gyll. This species is very 

 widely disti-ibuted in the Malayan and Polynesian Islands, 

 and has even been found in Ecuador ; it is therefore pretty 

 certainly a species which is easily conveyed by natural (or 

 possibly artificial) means over large tracts of ocean. 



3. Astrivius ohscurus, n. sp., n. gen. This insect 

 belongs to the same group of genera as the Steiiocorus 

 simplex on which I have just remarked, and is excessively 

 closely allied to a species found in the island of Formosa. 



TRANS. ENT. SOC. 1878. — PART IIL (OCT.) 



