117 



in foot Of tin- mary tad -n.-. u, I i- almost entirely emi- 



I tV- • in \icw bj the innumerable turf I the oviduct, 



It has tuiir distinct coats, an internal mucous, in « vt «rn:il ■eroos, 

 iukI t \% . » muscular layers, one running vertically and the other hori« 



lly ; both of which consul in I "i the itriated varietj 



of muscular fibres ". Thi interior of the alunentan canal is marked 

 by longitudinal rugte, from the surface of which long pjrifonn \illi 

 prop 



■ ■wi. — The distribution of the nervous n item "i tln- 

 highly organize I I on 1-, in some respeetSi identica] with thai 



found in tlir lAnguatuta beautiful!) described bj Pro- 



Uwi'ii. The glion, or brain, is situated dose to the 



mouth, and is intimately connected with the is, to which it 



lend two filament! (PI. \I.\I. fig. I, >. I could not, 

 :■. myself of the existence of an oesophageal ring. 

 The distribution of the large pair of nerve cords, which extend almost 

 throughout the whole length of the body, differs rer] materially l'mm 

 tlmt round in the Linguatulo. tiettioides ; fur, after passing over the 

 fallopian tubes, instead "i running down the sides of the rentral 

 n>jnTt i>f tin- lioilv, they continue along the dorsum, behind the ali- 

 mentary ranal ami clOM to the OTSiy (PI. XL1 I. fig. I, t). Tiny 

 arc at la-t ■_- r . i . 1 1 1 : 1 1 1 \ lost sighl Ofs feu lim - abOVC the aim-. 



faction. — In attempting t'> describe tin 



of reproduction in tlii- animal, I -hall begin at tin- vagina ami ti.ne 



them gradually upwards, for it was by following this course tl 

 was enabled, with the aid of the microscope, to distinguish tin- dif- 

 ferent organs, and to ascertain the function of their various part-. 



The orifice of the situated immediately in front of tin- 



anal aperture < PI. \l.\ 1. fig, i, rf). The ragina itself i- about the 

 thickness of s pin, and from .'* to (i lint'" in length ; it gradually 

 widens out into the oviduct, or mote) correctly speaking, the Dterns 

 (PI \I.\ I. ti_-. |, e) I about the tir-t ii inches the aterui 



a greater diameter than the alimentary eanal ; it then h< • 



- gradually narrow e r, till it- dban I thai ol 



a fine knitting-needle, and continues ut" thi- -i/e till within • 



ninatiftn, where it contracts -till mure. At it- upper 

 point of attachment, which is opposite the third nr fourth ring, iti 

 diameter is not greater than that of the vagina. In two of the 

 men- I measured the length of the uterus, and found it t 

 10 inches from the orifice of tl to the pit imeul 



Opposite the third nr fourth rim;. Thus it to be mar! . 



Ii of the entozoon in which it is coiled up. Altli 



. il, it i- not, n- in the CaSS of the / 

 (/until/, i t. 1 round it ; neither hn-« it the ferruginom 



tint apokea "i b) Owen ss '•> the oviduct of the I 



II -. on the contrary, ol ■ | or when lull of 



and almost quite colourless when empt] I thin 



ich. 



