( cliii ) 



rise at a considerable angle and are somewhat boat-shaped, 

 with the bows suddenly truncated and extended to a point 

 at the upper apex, the front edge being sharply dentate, and 

 the upper margin dentate in front; the sedoeagus is large, 

 terminating in a curved point, with the vesica well armed with 

 spines and the apex of the ductus ejaculatorius ending in a 

 stout, sharp, horny point. 



Gastropacha quercifolia, L., 



has the cingula in the sternite composed merely of two very 

 narrow long arms (with a small irregular saccus) articulated to 

 the broad subovate lateral plates of the tergite section — of 

 the cingula — high up at the rear, these plates are produced 

 at the front upper apex into stout strong tusks bent downwards, 

 whilst at the lower front edge they are developed into a curved 

 flange covered, over the top, by a hairy pad ; tegumen absent ; 

 the harpagones are very unusual in shape and consist of two 

 long, broad, vertical plates, which might be mistaken at first 

 sight for part of the cingula, the ventral part is hollowed and 

 produced forward into blunt points sharply dentate all the 

 way round their apical edges ; two large, strong, curved, tusk- 

 like sclerites, dentate and largely tubercled, arise from the 

 cingula near the base in the sternite, they are, I believe, some- 

 what analagous to an organ I named the " Furca " in 1910, an 

 organ universal among the Ruralidae and many other families ; 

 the sedoeagus is a large simple bent tube, with the vesica large 

 and finely shagreened, armed with two small clusters of spines. 



Taragama rufaria, B.-B. 



The cingula has exceedingly broad plates in the tergite 

 which are not excised on the dorsum in the rear, but are widely 

 bridged over, and so become practically the tegumen so far as 

 the dorsum is concerned, with their upper apices produced 

 forward into strong curved tusks ; the harpago consists of a 

 broad horizontal plate with its front edge produced into a 

 longish stout horn at the upper apex and a shorter one at the 

 lower apex, above which is a fair -sized rounded pad covered 

 with stoutish long hairs; the sedoeagus is a curved rapidly 

 tapering tube of moderate length. 



