40 



GUAM AGRICULTURAL EXPERIMENT STATION. 



one-fourth inch in length were found under the nictitating membrane. 

 Death is thought to have been the result of a migrating parasite. 



Eighteen per cent of the chicks between 4 and 6 months of age 

 that died at this station were found on post-mortem examination to 

 be infested with a nematode (probably Tetrameres fissispinus) em- 

 bedded in the walls of the proventriculus. A serious catarrhal condi- 

 tion affected the mucous membrane of the stomach, the walls of the 

 organ being thickened to the extent of almost closing the lumen. The 

 worm resembled a small blood clot about the size of a raspberry seed 

 buried in the walls of the stomach when either the mucous or serous 

 surface of that organ was viewed. From 6 to 47 worms have been 



found infesting a 

 stomach. Although 

 the worms set up a 

 serious condition, the 

 prevalence of diph- 

 theritic roup among 

 the chickens of that 

 age was so extensive 

 as to make it impos- 

 sible to attribute death 

 in any case to the 

 worms. Figure 4, «, 

 shows the worm as it 

 appeared under a mag- 

 nifying glass. Figure 

 4, h, c, d, shoAv the 

 caudal and cephalic 

 extremities of the 

 worm, and also the 



magnified 430 

 diameters. 



eggs. 



THE KYE AVOKM. 



<^ 



Fif.. 4. — Worm and e^gs from cliicken's stomach (prob- 

 ably Tetrameres fissispinns) : a. Female, enlarged; h, 

 ("uuhil extremity (X430); c, cephalic extremity 

 (X430) ; a, eggs (X430). 



An eye worm (re- 

 sembling the Manson's 

 eye worm) is com- 

 monly found infesting 

 the native fowls. The parasites in the eyes of a mature fowl seem 

 to affect the general conditions of the bird very little, but in the eyes 

 of a young chick they cause a much more serious trouble. At first 

 the eye is watery, later inflammation sets in, and finally a caseous 

 material accumulates under the eyelids and in the tear ducts. 



There has been opportunity^ to visit but two flocks badly infested 

 with the eye worm, and the work has not been extensive enough to 



