Dr. Baird on new species of Entozoa. 75 



enlarging in size as they descend, and becoming campanulate. They 

 are marked with numerous fine transverse hues, which again are 

 crossed by several strong longitudinal lines or grooves. The inferior 

 angles of each joint are slightly prolonged into a point, and the margin 

 is somewhat thickened (especially in the lower joints of body) and 

 undulately waved or shghtly scalloped. Orifices of ovaries irregularly 

 alternate. Length of specimens about 7 inches ; greatest breadth 

 about 2y lines. 



Hab. In the Crocodile of the Soonderbund, Crocodilus palustriSi 

 from Bengal. Brit. Mus. 



2. T^NIA CALVA. 



Tcenia calva, Baird, Cat. Entoz. Brit. Mus. 83. 



Head small, rounded and smooth, white and shining. Mouth 

 unarmed. Neck constricted. Articulations of body at first very 

 small, gradually enlarging in breadth as they descend till they reach 

 about the middle of the body, where they are still narrow, linear- 

 shaped and about seven times broader than long. After this they 

 begin to increase in length and diminish in breadth, becoming at first 

 nearly square, and at last, near the extremity, nearly twice as long 

 as broad. All the articulations are strongly striated across, and the 

 upper and lower margins, where they join with each other, are con- 

 siderably thickened. Length 5| inches, greatest breadth 3J lines, 

 breadth of lower extremity 1 millimetre, of head ^th of a mill. 



Hab. Intestines of the common Grouse, i«^oj3M5 aSco^icm*. Brit. 

 Mus. 



3. T^NIA GOEZII. 



Tcenia Goezii, Baird, Cat. Entoz. Brit. Mus. 78. 



Articulations of body very short and numerous. Inferior margins 

 straight. Genital orifices opposite, situated on or near the lower 

 edge of each joint ; the lemniscus projected out in form of an ele- 

 vated papilla which curves downwards. Unfortunately the head is 

 wanting. Greatest breadth of body 6 lines, length of articulations 

 about ^ a line. 



This species differs from T. expansa and denticulata (to which 

 species it approaches) in having the posterior or inferior border or 

 edge of each articulation smooth and rounded, instead of being cre- 

 nulated or undulated ; and in having the genital orifices situated on 

 the lower edge of the articulation, instead of in the middle. 



Hab. ? Brit. Mus. 



4. T^NiA Zederi. 



TcBuia Zederi, Baird, Cat. Entoz. Brit. Mus. 85. 



Articulations of body of moderate size, campanulate-shaped, lower 

 margins of each more or less crenated and thickened ; at first they 

 are short, they then become longer and narrower as they descend. 

 The greatest breadth is about 2 lines. The whole body is of a yellow- 

 ish-white colour. Unfortunately the specimens are imperfect at the 

 upper extremity and want the head. The orifices of the genital 

 organs are irregularly alternate. 



