158 CALIFORNIA ACADEMY OF SCIENCES. 



each side. Its posterior end is a little bent just before 

 it enters the hind-gut. The latter is short and narrow. 

 The rectum is very much expanded anteriorly, having 

 six prominent rectal glands surrounding the posterior 

 end of the anterior smaller part of the intestine. 



In Goniodes cervinicornis the crop is relatively very 

 long and tapering (plate xi, fig. 12). It lies in an 

 almost antero-posterior direction to the left of the rest 

 of the alimentary canal. Its anterior end is large and 

 rounded; posteriorly it tapers to a rather pointed 

 extremity which reaches a little farther back than the 

 posterior end of the ventriculus. When in the natural 

 position its hind end is bent to the right and lies close 

 to the stomach. The oesophagus enters the crop on its 

 dorsal surface back of the anterior end. The part of 

 the oesophagus between the crop and the stomach arises 

 from the former in front of the point at which the an- 

 terior portion of the oesophagus opens into it. The 

 stomach is rather long, but when it is distended it does 

 not taper very much posteriorly, passing into the intes- 

 tine by a rather sudden constriction. The two cseca at 

 its anterior ends are relatively smaller than in the other 

 forms described, and are merely blunt diverticula of 

 the ventriculus without constricted bases. The pre- 

 rectal part of the intestine is very short and narrow. 

 The rectum on the other hand is unusually large, hav- 

 ing its anterior end very greatly dilated and provided 

 with six very large and much elongated rectal glands. 



In Lipeurus fuliginosus major the crop lies to the left 

 side of the body-cavity, the rest of the canal lying 

 along the right. The ventriculus simply contracts pos- 

 teriorly, passing gradually into the intestine, the two 

 being separated by only a slight constriction. The rec- 

 tum is comparatively rather long but otherwise both it 



