Dendroaoelopsis ameriaana (Hyman, 1939a) 



Synonym: Sorooelis amerioccna Hyman, 1939 



85 ) ( 86 



gp bd 



Fig. 87. Spiny wart of the penis sur- 

 face, enlarged (after Hyman, 1939c). 



Up to 18 mm long and 2 mm wide. Anterior end of quietly gliding animal 

 truncate, with convex frontal margin, laterally and anteriorly protruding 

 auricular appendages, and a distinct narrowing or neck behind the auri- 

 cles. Adhesive organ subterminal, weakly developed. Eyes numerous, 

 arranged in two almost parallel longitudinal rows placed at a distance 

 from each other of about 1/3 the width of the neck region. Number of 

 eyes increases during growth. Body unpigmented, white. Testes not 

 numerous, predominantly dorsal, extending posteriorly to behind the cop- 

 ulatory complex. Sperm ducts unite at a variable distance anterior to 

 penis. Penis with muscular rounded bulb and conical papilla. The common 

 vas deferens enters the bulb anteriorly, traverses the bulb as a straight 

 narrow canal and opens into a highly glandular cavity with irregular out- 

 line, the seminal vesicle. From there the narrow ejaculatory duct runs 

 to the tip of the penis papilla. Cells of the outer epithelium of the 

 papilla appear as wartlike eminences, each studded with colorless, 

 pointed spines (this can be seen on the freshly extirpated penis). Com- 

 mon oviduct opens into the posterior end of the male atrium. Copulatory 

 bursa absent, bursal canal blindly closed and covered by a thick layer of 

 muscles. Cocoon almost spherical, unstalked. Inhabits caves and springs 

 in Oklahoma and Arkansas. Literature: Hyman (1939a, 1939c). 



62 



