U. S. NATIONAL MUSEUM 



83 



PROCEEDINGS. VOL. 88 PLATE 9 



DINURUS PINGUIS, NEW SPECIES. 



83-95. From A,KuiUa rostrata: 83, Sagittal section of anterior end; 84, frontal section oi 

 posterior end; 85, nearlv frontal section of head; 86, cross section ot neck at level 

 of genital pore; 87, cross section of neck behind genital pore; 88, cross section of 

 neck short distance back of section shown in f^g. 87; 89, cross section of specimen 

 in which ova for most part are confined to postacetabular region; 90, cross section 

 of specimen in which ova are crowded forward dorsal to ventral sucker, section at 

 about same level as fig. 89; 91, ova; 92, cross section behind testes; 9^ cross sec- 

 tion of retracted appendix; 94, excretory vessel and intestines, frorii cross section 

 0.1 mm. from posterior end; 95, cross section 0.06 mm. from posterior end. 

 96. From Menidia notata: Frontal section, anterior end. 



