ANIMAL PARASITES AND DISEASES. 69 



83. All the empty egg-shells were still adhering to the hairs, and 

 there remained eleven dead eggs on the thirty-sixth day. 



On the twenty-fourth day the second half of the eggs were treated 

 and three hatched, on the twenty-fifth day two, and on the twenty- 

 seventh day one. The method of carefully wiping over -with the 

 sponge was continued until the thirty-sixth day, but no further hatch- 

 ings took place. 



SUMMARY. 



From the foregoing observations it is concluded that : 



1. The egg of GastrophUus eqiti (Fabr.), is provided with a pair 

 of lip-like valves, by means of which it is firmly attached to the hair. 



2. After the larva has escaped the egg-shell adheres for some 

 considerable time to the hair. 



3. The eggs are not taken into the mouth as stated by Froggatt. 



4. My experiments confirm and supplement those of Osborn, 

 although the actual dates differ somewhat, thus the largest number 

 of eggs hatched from the sixteenth to the twentieth day, and none 

 hatched after the thirty-sixth day. 



5. Without moisture or friction very few eggs hatch. 



