Coleoptera from the Hawaiian Islands. 101 



SCOLYTID^. 



Hypothenemus (Leconte). 



I have described one of Mr. Blackburn's new species 

 under the above generic name with some hesitation, for at 

 present it appears there are no systematic characters to 

 distinguish the genus from CnjplLulus. Hitherto the 

 number of joints in the funiculus of the antennre have 

 been used for the purpose, but this has been abandoned 

 b}^ Leconte, who now includes under the name some 

 species having two, and some having more than two 

 intermediate joints in the antennas. The reason he has 

 given (Proc. Am. PhiL Soc. 1876, No. 96, p. 355) 

 makes me think he is correct in this procedure. I have 

 not, however, called the new species here described a 

 Cri/phalus, because I think it quite probable that future 

 investigations will reveal a sufficient gap between Crij- 

 jihalus (as represented by biiioduliis, Ratz., and its allies) 

 and Hypothenemus eruditus, Westw., with the species near 

 it, to justify their separation. 



IlijpotJienemus macuUcollis, n. sp. Breviusculus, latius- 

 culus, subcylindricus, niger, antennis pedibusque fusco- 

 testaceis, setulis omnium brevissimis, fuscis vestitiis ; 

 prothorace autrorsum fortiter asperato, posterius subtilis- 

 sime granulato, sub-opaco, medio parum distincte rufo- 

 maculato ; elytris subtiliter seriatim punctatis, posterius 

 vix retusis. Long. 1^^ mm. 



This species is intermediate in size between //. eruditus 

 and Cryplialus hinodulus ; the setaj of the surface seem 

 to be finer than in H. eruditus, and are very easily removed ; 

 they are very dense on the deflexed apical portion of the 

 elytra, and cause the surface there to appear extremely 

 opaque. The intermediate joints of the antennas are ex- 

 cessively abbreviated, so that at first sight the globular 

 2nd joint appears contiguous with the base of the club ; 

 but examination with a compoimd microscope reveals 

 some very short, broad, indistinctly sejxarated intermediate 

 joints, Avlilch are, I believe, three In number: this Is the 

 same structure as Is stated by Leconte to occur in the 

 North American H. dissimilis. 



I have received three Individuals as No. 39 from 

 Mr. Blackburn, with the remark ''widely distributed." 



