FROM THE SOCIETY S GARDENS. 



657 



chitinised, invisible without dissection. Tlie basal pieces {or 

 " glands ") are small circular areas, each framed in a chitinous 

 plate which goes forward to the labial margin as anterior hypo- 

 pharynx. Posteriori}^ are attached the usual narrow tendons, 

 one to each "gland." " Ducts " or chitinous chords apparently 

 absent. 



A. cygni. — In the form of the mandibles, lyriform organ, basal 

 pieces, anterior hypopharynx, and in the absence of ducts this 

 species agrees closely with the preceding, and I am unable to 

 find any obvious differences. The mandibles are perhaps more 

 powerful, 



Text-fio'ure 11.. 



Male copulatory apparatus of the genus Aiiatcecus. X 150." 



1, A.ferrugineus. 2. A. cygni. 3. A. ohtusiis. 



BP. basal plate. B. retinacular comb. UP. endomeral plate. P. pai-araere. 

 Ps.P. pseudopenis. E. effractor. 1 a. side view of effractor. 



The small sac cannot fee sliown. 



The Male Copulatory Apparatus in the Genus Anatoeeus. 

 (Text-figs, 11 & 12.) 



Group A. Those with the efi"ractor. 



A.ferrugineus. — Basal p>late : Longer than broad, with a rather 

 deep and broad V-shaped white mai'k debouching on the anterior 

 margin, looking like a split, the result of an accident in dissection ; 



