244 



Table showing comparative data eelai 



The figures in parentheses are based on measurements obfcal 



(relating to 0. gibsoni) are taken from Dr. Sweet's ' ' 



Females. 



0. gutturosa, 

 Australia. 



Length of female 



Diameter -15 mm. from anterior end 

 Diameter just in front of vulva 

 Diameter of mid-body ... 

 Diameter at level of anus 

 Diameter of cervical dilatation 

 Nerve-ring from anterior end 

 Oesophagus, length 

 Oesophagus, diameter ... 

 Vulva from anterior end 

 Anus from posterior end 

 Cuticle thickness 

 Distance between spiral ridges on mid-body 

 Ratio of distance between adjacent ridges on 

 mid-body to maximum diameter of mid-body 

 Number of striae between ridges 

 Height of ridges on mid-body 

 Egg (with larva), length 

 Egg (with larva), breadth 

 Free larva, length 

 Free larva, breadth 



•08 



•07--085 



•250--280 



•08--10 



•07--075 



•22-24 



1-52 



•012--018 



•55- -60 



•22 



•030 



•095--120 



■33-43 



4 

 •004--006 

 •032--037 

 -023--030 



•20 



•005 



0. bovi&l 

 Fiancef 



(Piettre) 



260+T 



•26-29 



•S2--85 

 •63^-65 



•048- -05c 



•034--03( 



•230--26£ 



•0055 



Males. 



Length of male ... 



Diameter -15 mm. from anterior end 



Diameter -5 mm. from anterior end .. 



Diameter of mid-body ... 



Diameter of level of cloaca 



Diameter cervical dilatation ... 



Nerve-ring from anteriw end 



Oesophagus, length 



Oesophagus, diameter ... 



Cloaca from posterior end 



Long spicule, length 



Short spicule, length ... 



Long spicule, diameter 



Short spicule, diameter ... 



Transverse ridges apart 



Papillae (adanal, postanal, caudal) .. 



0. gutturosa, 

 Australia. 



24-33 



•05--06 



•05--06 



•08--09 



•03--04 

 •065 



•18--22 

 1-1 

 •010--020 

 •075--085 

 •180--255 

 •060--08O 

 •005--007 

 •007--010 



•0015 

 , 2, 1 or 2 



0. b ovist 

 France [ 



(Piettre) 



40-50 



•085--0& 



750--8( 



•180--2K 



•065--07^ 



•005- 

 4, 1, 21 



(l) In our original short account (Agric. Gaz., N.S. Wales, 



is a typograpl 



