1879.] NATURAL SCIENCES OF PHILADELPHIA. 103 



(not thickened), flexible process (fig. 9). The one to two outer- 

 most teeth small and in form very variable (fig. 10a, llaa). The 

 teeth (in their thickened parts) of yellowish color, somewhat 

 darker and less clear than in the typical species. The length of 

 the rachidian teeth in the hinder part of the tongue 0.2 mm.; the 

 greatest height of the lateral teeth (in about the same region) 0.4 

 mm. Double plates (fig. 12) were present. 



The glandnlse salivales were clay-yellowish, about 25.0 mm. 

 long, rather flattened; about 10.0 mm. broad on the under side, 

 separated by the oesophagus ; on the upper side confluent in a 

 large convex plate about 25.0 mm. broad. The efferent ducts were 

 short. 



The oesophagus was about 38.0 mm. long, with a diameter of 

 11.0 mm., and rose from the foremost part of the bulbus pha- 

 ryngeus; in the posterior half were rather strong longitudinal 

 folds passing without distinct limits into the stomach. The latter 

 formed a moderately sized sac at the anterior part of the liver; 

 the under side was free, the upper decked by a flat lobe of the 

 liver. The stomach was somewhat compressed; in anteroposte- 

 rior direction about 9.0 mm. high; the cardia were wide with two 

 biliary orifices in the posterior part ; above, a rather narrow 

 pylorus with very strong folds ; the walls of the stomach are 

 rather smooth. The intestine issues from the uppermost part of 

 stomach, appearing on the surface of the liver at the left side of 

 the heart, following the left margin of the liver forwards, lodged 

 in a groove on the surface, but backward at the front and end of 

 the liver, following the right side of that organ, somewhat descend- 

 ing, then ascending again and terminating at the anus. The 

 anteriorly proceeding part of the intestine was about 25.0 mm. 

 long, the rest was about 50.0 mm. long, of which 15.0 mm. be- 

 longed to the part which ascends to the anus. The diameter of 

 the terminal portions of the intestine was about 3.0 mm., of the 

 middle portion nearly 7.0 mm. Through nearty the whole length 

 of the intestine, and nearly reaching to the knee of the last 

 ascending part, was a strong and thick fold of about 3 mm. in 

 height ; the last part of the same for a length of full 4 mm., free 

 and projecting wing-like. Fine longitudinal folds, often shining 

 through the walls of the intestine, were moreover seen through 

 the whole length of it, in the first part especially strong on the 

 under side ; in the last part finer, partly ending in the folds of 



