ToKöTA : SiCDiKs ON Tiir; ItoNKY Bki;, wnn Sri:iiAi. Ki;ri:KK.Ni:K to thk Ja]'Am;~i: Honky Bek. i i 



sv'niinctrical chitinous plates are sonietiincs iicarlx^ lost in the Japanese bce 

 (Figs. iS, 17). or are represented simply bv a grou]j of slight thickenings of 

 the membranous wall (j, Figs. 14, 20), \\liicli are melt together in mcllifica 

 into a pair of hard chitinous plates in the dorsal wall of the penis tube (.y, iMgs. 

 l6, 18). In this respect, the Chinese drone can not be distinguished from the 

 Japanese, showing a .slight thickenings of the mcnibrauoiis wall instead of the 

 hard symmetrical chitinous plates. The Ihickrnings are only a ring zone 

 formetl of minute outgrowths of the penis wall. The lateral and ilorsal views 

 of the zone are shown in Figs. 14 and 20 {s) respectively. 



In the proximal portion the so-called pinnalcly lubed projection shows a 

 fan-shaped arrangement of lobes around the axis (/, Figs, 15, 21), instead of 

 the pinnate structure in mellifica, in which the lobes arc arranged ]M-incipally 

 on each side of the axis, whence the terniiiiolog}- of the organ is derivecl 

 (/, Figs. 16, 22). What is the cross- striped ridges concerned, the grooves 

 separating them are more depressed than in incUiJica. so that the ridges are 

 expressed distinctl)- (r, Figs. 14, IS, 17). The ridges are furthermore provided 

 with the spinales or hairs, the growth of which is in particular den.ser and 

 more vigorous towards those in the proximal part ; in mell-fica the\' are separated 

 not only bv the relatively inconspicuous dejjrcssions, but the spinules are mo.st 

 vigorou.s in the middle ones, as seen in the penis evei-ted. The ventral quad- 

 rangular region is ver>- thin in structure and clad \\ith spinules very weakly 

 {q. Figs. 15, 17), connecting witii the well dc\-cIoped proxinialmost ridge (;-,, 

 Figs. 15, 17), while in viellißca the former is thick and vigorously haired and 

 set off from the latter by a strong constriction {(/, c, Fig. 16). The dorsal 

 triangular region, on the other hand, is larger and more haired in the Japanese 

 drone tiian in viellifica (/, Figs. 14, 1 5, 17). 



In the pneumophyses I have detected great di\'ergencies from those of 

 inellifica. The>' are represented by a pair of conical tubes found on each side 

 (/», Figs. 14, 15, I"' 23, 24). They ha\-e 3 likewise conical, tubular, accessory 

 Outgrowths of unecjual length at its basal jjart {p.,, ^,, ^ Figs. 14, 15,1 7, 23, 24); 

 the pro.ximal one is the longest (/>.. Figs 23, 24) and produces some minute 

 accessory outgrowths, while the distal as well as the shortest middle tubes are 

 simple. The homologous structures are rudimentär)^ in viellif.ca, being repre- 



