FiKUve 18. — I'oiiiiftocfron ((Diciicinnut n. sp. a, tulio; I), flat form of operculum; c and il. lateral and dorsal views of 

 conical form of operculum; e. abdominal neuroseta; f. thoracic uncinus. S(rpiilii r< iiiiitiihiris iiianiiluxa k. 

 operculum. Hiithciidrx iiiiciiiata h, operculum; i, lateral view of a spine from the crown. Mi-tiin-niiiliii miilti- 

 criKtutd j. dorsal view of anterior end; k. oi)erculum; 1. thoracic winded capillary; m. "seta of Apomtitiis"; n and 

 o. edge-on and lateral views of thoracic uncinus; p. abdominal g'eniculate seta; q. edjfe-on view of abdominal 

 uncinus. 



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