[ 28 ] 
h„t head , l , S SOmewhat knob shaped when seen from above downwards 
. I < -';* S1 " nal y Presents a hooked appearance when viewed laterally lust 
boS more ohA % sb g b tly constricted neck which is continued J t he 
taoers rarddTv r Umfon " ln char acter until the tail is reached, when it 
tapers rapidly to a mere filament. 
deenlT h srtiin a / Ud T ent ^ a J m ° Uth ° n the head bounded b Y two oval 
cou d' h " r UClel - Nodlstlnct structure representing an oesophagus 
between two u We , regard the rather indefinite interval 
nucLi are J shaped , nuclel for a short Glance as one. The 
uclei are arranged in an unusual manner. At the head portion very few 
oL ?e n nth r of e t n h C e OUn hT^ F , r ° n r downwards a distance equal to 
and are nla! d wkole f Ien S tb oftne embryo these are rod shaped in character 
snare an P “ the f ° rm , ° f tWO P arallel r °ws, thus making the intervening 
single rowof A a A ° e ?° 1 l hag J S- Ph ! s ’ however > is not constant, and a 
of the neck T ° A bha P? d nuclel ma y be seen occupying the centre 
of he neck Lower down the nuclei are oval and are arranged irregu¬ 
larly sometimes in twos, sometimes in threes, but their longest diameters 
^aDs 3 in a3 th Para f t0 the ° f the W ° rm ‘ There are interruptions or 
see P n. ^ nUC 6ar COre where notbin g but faintly stained protoplasm is 
is fin!m"d ardS the * ail > tbe nUC,e ‘ a,e arran 2 ed in single file. The tail itself 
without any'orresponding'nuclek “ 0CCUpied m6rely by pr ° topIasn ' 
Male Aortic Worm of Buffalo. 
tumour 16 'if'rtAn 6 f'° rn ; ° f the buffal ° is found coiled up within ‘he 
tumour. Unlike the female, no portion of its body is visible in the unbroken 
massexceptoccasionany, when the head may be seen projecting through 
l ft . P art of lts cov ermg. Each female is usually associated with one 
male wnhm a tumour, but two or three separate males are common, and on 
r,.ir aS , ? anyaS elght se P arate males were removed from one tumour 
though only one female was present. 
of ,, i', IIS niale WOr , m hes loosely coded up amongst the granular contents 
■ • nmonr, so t at it is ijuite easy to remove it. On tearing away the 
Once r U d 6 °l the tUm0l !f’ f h ' S ' S usually the first iivin S structure seen, 
ce found, it can De pulled out without any difficulty. It mav, however 
be mentioned that not every tumour harbours a male worm, especially when 
the female is young or very old. In about 7 o per cent, of the tumours 
dissected one or more males have been found. When the males are absent' 
creatureThaiftH T" ? ,' nSlde the tumours - The male is a much smaller 
oared wi h , A ale ’ U m ® asu f e f trom 45 to 50 mm. in length as com¬ 
pared with 200 to 300 mm. in the adult female, whilst the greatest width is 
neye r over .3 mm. as compared with 1.5 mm. in the female. 
,• hen freshly dissected out and placed in a dish containing normal 
e solution, it coils and uncoils itself in a regular manner, but does not 
active ab ° Ut tr ° m P aCe t0 P,aCe ' The head and tail Portions are the most 
Alimentary Canal. 
_ The mouth is surrounded by an oval ring. The rest of the alimentary 
canal differs from that in the female in that:_ 
