322 



PROCEEDINGS OF THE NATIONAL MUSEUM 

 GLYPTOPORUS NOCTOPHILUS, new species 



VOL. 83 



Specific diagnosis. — Body elliptical, posterior extremity sometimes 

 attemiate, 0.45 (0.48, 0.53) ^ mm long and 0.32 (0.29, 0.38) mm wide. 

 Cuticula without spines. Oral sucker subterminal, 0.075 (0.066, 

 0.08) nmi long and 0.097 (0.088, 0.09) mm wide. Pharynx 0.03 

 (0.03) mm long and 0.04 (0.039) mm wide. Esophagus evidently 

 very short (possibly absent). Intestinal ceca short, simple, extend- 



FcQCRE 25.— Olyptoporus noclophUus, new genus, new species: Dorsal aspect, camera lucida. cit, Vitel - 

 laria; c, cecum; op, ovary; sr, seminal receptacle. 



ing laterally to anterior margins of testes. Ventral sucker 0.07 

 (0.07, 0.073) mm long and 0.076 (0.08, 0.078) mm wide, pre-equatorial. 

 Testes ovate to pyramidal, average length 0.066 (0.066, 0.057) mm, 

 average width 0.062 (0.049, 0.049) mm, placed near body margins 

 and at level of ventral sucker. Cirrus sac large, usually about a 

 third as long as entire body, length 0.153 (0.156, 0.145) mm (distance 

 between extreme anterior and posterior levels rather than actual 

 total length), width 0.056 (0.066, 0.063) mm, mostly anterior and 

 lateral to ventral sucker, strongly recurved. Seminal vesicle volumi- 

 nous, much convoluted, and ending in a narrow ejaculatory duct. 

 Genital pore anterior to ventral sucker and shghtly lateral to mid 

 line of body, closer to ventral sucker than to pharynx. Region 



' The first measurement given is of the type; the ne.xt two ars of the paratypes. 



