TREATMENT OF GAPE8. 



133 



■as if to make up for its defective assimilating powers, greedily- 

 devoured everything wliicli came ;in its way, consuming two 

 ■or tliree times as mucli as any other member of the brood. 



'^ The female worms extracted from the trachea have an 

 average length of fths of an inch, the males scarcely 



Fig. 1. Syngammtrachealis, male and temaie. 

 Natural size. 



Fig. 2. Upper part of the same, showing 

 more especially the six-lobed circular lip of 

 the female, and themode of union. Enlarged. 



Fig. 3. Lowerendof the body of the female, 

 Trith its mucronate caudal appendage. En- 

 larged. 



Fig. 4. Lower end of the body of the male, 

 showing the cup-shaped bursa, hard rays, 

 lateral muscles, digestive tube, and round 

 tail. Magnified 30 diameters. 



Fig. 5. Mature egg. Magnified 220 dia- 

 meters. 



Fig. 6. EggjWithcontainedembryo. Mag- 

 nified 220 diameters. 



exceeding -|^th of an inch. In both sexes the bodies are 

 tolerably uniform in breadth throughout. The mouth of 

 the female is furnished with six prominent chitinous lips 

 (Pig. 2). The male is usually found fixed by means of a 

 strong membranous sucker (Fig. 4) . The eggs of Syngamus 

 are comparatively large^ measuring^ longitudinally^ as much 



