364 



ENTOZOA. 



Without attempting to rectify these discrepancies, I shall con- 

 tent myself with giving a mere outline of the structure of Oxyuris 

 according to views usually accepted, whether they be right or 

 wrong. And, first, as regards the integument. This consists of a 

 true skin layer and an extremely-delicate, transparent, structure- 

 less epidermis. The corium is described as consisting of dense 

 fibres, some of which are spirally and others transversely directed ; 



Fi&. 78. — Male Oxyuris aermicuLarh-. (Highly magnified.) — Kiichenmeister. 



these appearances I have not myself seen, and I feel tolerably cer- 

 tain they are illusive phenomena. In all cases, as in other nema- 

 todes, we find the characteristic, regular, transverse rings, which 

 are beautifully distinct in the vesicular production surrounding the 

 mouth. The muscular system consists principally of four longi- 

 tudinal masses, two dorsal and two ventral, which pass from the 



