the sli<:lit ilisriiictions should he found of iiuportance when u 

 good cxjiniination of a nuniher of examples is uiade. Figure 1 

 shows the male structure fairly well of an example from Tan- 

 talus, Oahu (1500 ft.) with the sac extended. In other speci- 

 mens the shape ()f the inciidn'anous part of the sac is a little 

 different, and the shape of the apical i)ortion of the nudian 

 lohe itself is not quite the same. 



Rhyncogonus sp. (?) 



iu the Giff'ard collection there is one specimen that a])pears 

 to he a new species. It is a male, found in dead leaves at 

 IIcJciiKUid. ()alni. It is scarc('l\' U mm. and has somewhat the 

 a])})cai-ance of a minute hhich-burid with flat shining elytra, 

 white hair extending all the length of the side of the thorax. 

 The uuile organ has been examined; the apical portion of the 

 median hihe is unusually short and broad. This specimen has 

 been labelled by me as R. 18. 



Rhyncogonus koebeiei Perkins. 



Tliis was described from a single male eaxmple, but was 

 subsev|uently reported by Dr Perkins as being plentiful in the 

 ]\rau(ia Valley on Oahu. The s]KX'ies is the most remarkable 

 of the genus, the maxillae being completely exposed, and the 

 eyes not 'prominent. There is a small scries from Palolo Val- 

 ley, Oahu, in the Giffard collection, including both sexes, in 

 ;he male the median lobe has the apical portion much ])r()- 

 louiicd and the ti]) cui'ncmI upwards. The sac appears to be 

 almost e_N"liiulrical, and the large transfei' a])paratus to be so 

 jdaeed as to continue the axis of the sac, but only one S]>ecimen 

 has been seen and conlirmatien is desirable. 



Rhyncogonus sp. n. (?) 



In the Giffard collection there are two males of a form 

 very closely allied to l-oehelei. but with obsolete sculpture on 

 the thorax, the elytra a little differently shaped, being rather 

 shoiMer, moi-e convex and with indistinct lateral uuirgiu. The 

 liuceal caxlty and tiie eyes are quite as remr.rkable as they are 



