80 



in l-ochelci. The apical portion of the mediiin lobe of the 

 aedeagns (Fig. 3) is not so prolonged, and this would seem 

 to point to a really distinct species. Waimauo Mountains. 

 Labelled R. (3. 



Rhyncogonus sordidus Perkins. 



I refer a small series of specimens in the Giflfard collection 

 from the Island of Lanai to this species, and with much doubt 

 two from Oahu. In the specimens examined from Lanai the 

 ajdcal portion of the median lobe is broad, comparatively short, 

 and with very slightly curved upwards tip. I think the Oahu 

 form has a still shorter apex of the median lobe, and a l)etter 

 series might show it to be distinct. 

 Rhyncogonus sp. n. (?) near R. stygius. 



Three specimens (1 male, 2 females) from Freycinetia, 

 Wahiawa, Oahu, are probably yet another new species. It is 

 a large form, perhaps a little smaller than hlackhurni, with 

 rostrum rather longer, and the snout less dilated, the eyes less 

 prominent. The aedeagns of a specimen labelled R. 4 suggests 

 a close relationship with hlachhuvni. 



]\ry examination of the male organs, inadecpiate as it is, 

 shows that the male copnlatory apparatus is of a simple nature, 

 very common in Otiorhynchidae, and that different species in 

 this genus exhibit only slight distinctions. In fact this seems 

 to support the theory that all the species may have arisen in 

 the Islands from a single species. A careful examination of 

 numerous specimens with a view to ascertaining the constancy 

 or variation of this organ is eminently desirable. 



In his review of the genus in the Introduction to the Fauna 

 Hawaiiensis, Dr. Perkins enumerated 24 species of Rhynco- 

 gonus, and mentions that none is kno^vn to occur on Hawaii. 

 Mr. Giffard has, however, found a species there, of which de- 

 scription follows: 



Rhyncogonus giffardi sp. n. 



Fusco-niscr. parce griseo-squamous, antennarum funiculo tibiusque 

 subflavescentibus, elytris convexis ad latera minus discrete carinatis ; ocu- 

 lis mediocriter convexis. Long. inc. rostr. 8 mm. 



Hab. Insula Hawaii. 



