Sphalloptana hoffmasteri (Hyman, 1954) 

 Synonym: Speophita hoffmasteri Hyman, 1954. 



67 /dK, 68 



Fig. 67 and 68 after Hyman (1954), modified. 



Preserved specimens about 11 mm long, plump. Anterior end rounded, with 

 adhesive organ. Eyeless and white. Lateral margins of the body with a 

 zone of large rhabdites. Adhesive pit is a deep epithelial invagination, 

 with glandular outlets and retractor and protractor muscles. Testes 

 prepharyngeal , rather large, situated on either side of the midline in a 

 band in the middle regions of the sections. Penis with large bulb and 

 elongated, conical papilla. The vasa deferentia enter the bulb and pro- 

 ceed to the base of the papilla where they unite to a short common vas 

 deferens. This empties into the elongated penial lumen which first widens, 

 then narrows again, and opens at the tip of the papilla. The shape of 

 the copulatory bursa is not definitely known. The bursal duct is rather 

 narrow in its anterior course while its distal part, behind the atrium, 

 is differentiated as a vagina with tall epithelial cells and what seem 

 to be muscular structures. Caves in West Virginia. Literature: Hyman 

 (1954). 



53 



