OXYUEIS VERMICULABIS. 357 



penis is completely and essentially distinguished by its small size 

 and its form, from the penis of the Ascarides, which is usually 

 double. 



Having thus justified ourselves with regard to the name and 

 position of the worm in the system, we may pass to the closer 

 examination of the worm. 



Corpus album; cutis transverse striata, in margine utroque 

 cum duplice ordine dentium acutiorum et obtusiorum secundum 

 Dujardini mensuras 0*018 0-023 mill., secundum meas infeminis 

 0-0240-030 mill. = 0-0108 0-014'" P. = 0-011 0-015'" F, 

 in maribus autem 0-008 mill. = 0-0036"' P. = 0-0037'" F., inter se 

 distantium; caput 2 appendicibus later alibus, vesiculosis epidermidis 

 duplicaturd ; os rotundum, antice margine trilabiatum et angustum, 

 oesophagus carnosus, musculis longitudinalibus ct transversis, canali 

 triquetro ; ventriculus strictura ; cesophago sejunctus, globosus, 

 cum cavitate interna triquetra, et valvularum apparatu ; epithelio 

 polyedrico cum nodulo pellucido sparsim instructus. 



Mas : 2-05 mill. = 0-90'" P. = 0-95'" F. ad 2-5 mill. adS'Wmill. 

 longus (si caudam semper curvatam tanquam lined recta extensam 

 mensus es) ; in capite una cum appendicibus 0*094 mill. = 0-041"' P. 

 = 0-042'" F., sine appendicibus 0'024 mi//.= 0-0108'" P. = 0-011'" 

 F, medio in corpore 0-123 mill. = 0-054'" P. = 0-055'" F., in 

 cauda 0-023 mill. = 0'0144'" P. = 0-0148'" F. latus. (Esopha- 

 gus a 0-024 mill. = 0-0108'" P. = O'Oll'" F. ad 0-041 mill. 

 = 0-0108'" P. = 0-011 F. ad 0-041 mill. = 0'018 W P. = 0-0185"' 

 F. latitudinis intumidus est circiler 0'311 mill. = 0'137 /x/ P. 

 = 1 141 /// F. longus. (Esophagum sequitur brevis tubi intesti- 

 nalis strictura 0-008 mill. = 0-0036" P. = 0-0037'" F. longa et 

 0-016 mill. = 0-0072 X// P. = 0'0074 X// F. lata. Postea sequitur 

 ventriculus ; 0-115 mill. = 0-050 //x P. = 0'052 X// F. longus et 

 0-065 mill. = 0-0288 /x/ P. = 0-0296 /x/ F. latus cum valvularum 

 apparatu cognito ; iubus intestinalis paulo post ventriculum lati- 

 tudinis 0-057 mill. = 0-025'" P. = 0-026 //x F. est, ad anum vero 

 0-008 mill. = 0-0036'" P. = 0-0037 X// F. Penis simplex 0-057 

 mill. = 0-025 W P. = 0-026 /x/ F. longus, ad basin 0-008 mill. 

 = 0-0036 /7/ P. = 0-0037 X// V., in apice vero semper ad hamuli 

 instar recurvato, latitudinis (adultinum 0'003 mill. = 0-001 /x/ P. 

 et F) . Funiculus spermaticus et testis simplex ; spermatozoidia 

 epitheliorum imaginem simulantia. Caudae apex in foveam 

 suctoriam mutabilis. 



Femina : 7'84 ex aliis ad 10 mill.= 3-48, ex aliis ad4>'337"' P.= 



