194 



BULLETIN 140, UNITED STATES NATIONAL MUSEUM 



265), the one 3.3 mm. long by 17/x wide, its distal end sharply 

 barbed, there being 3 or more recurrent points or processes; the 

 other 674/a long by 58ju. wide, its distal end bluntly rounded. 



Female 43 to 62 mm. long by 966/x to 1.2 mm. wide. Anterior 

 part of esophagus 697/a, posterior part about 5.2 mm. long in large 

 specimens. Anus 1.1 mm. from posterior end of large specimen; 



oz mm. 



/mm 



Fig. 264.— Harteria annulata. a, Lateral ; b, front ; c, dorsal view of head ; 



d, EGG ; e, FEMALE TAIL ; /, OVEJECTOR ; g, ENLARGED VIEW OF CUL-DE-SAC AT UNION 

 OF SPHINCTER AND TRO.MPB. ORIGINAL 



rectum 199/* long, cylindrical, with thin chitinous lining (fig. 264e). 

 A loop of the uterus lies ventral to the intestine just anterior to 

 the rectum. Vulva 14 mm. from anterior extremity of specimen 

 62 mm. long, thus a little less than V4 of total length from anterior 

 end. Vulva difficult to find in the folds of cuticle, a small simple 

 opening with 2 narrow lips, their length being parallel to the long 



Fig. 265. — Hartertia annulata. Male tail and spicules. Original 



axis of the worm. Length of vestibule and sphincter 1.4 mm.; 

 length of unpaired trompe 2 mm. The vestibule is of a very 

 unusual character; near its union with the trompe it has a pyriform 

 swelling which continues beyond the point where the trompe opens, 

 and ends blindly in a cul-de-sac (fig. 264 / and g). The terminal 

 portion of the latter is a solid mass of circular muscle fibers, no lumen 



