THE NAUTILUS. 93 



The albumen gland is large and finely granulose. Its separa- 

 ion from the vagina-oviduct is not well marked. The herma- 

 phroditic duct empties at the junction of the two. This duct is 

 greatly convoluted and swollen in its lower portion. Upwards, 

 it is thin and slender. The hermaphroditic gland is composed 

 of two portions, grape-like granules embedded in the coarsely 

 granular liver. The spermatheca is pear-shaped and empties 

 into the vagina a considerable distance below the termination of 

 the vas deferens. 



The digestive tract is composed of the usual elements; buccal 

 mass, salivary glands, oesophagus, stomach and intestine. Two 

 features seem to be noteworthy. The oesophagus is not a slender 

 duct as usual, but the walls are " knotty " or slightly convoluted 

 throughout. Also on the stomach there appears to be an acces- 

 sory gland, closely appressed to the walls of that organ. The 

 salivary glands are united into one but they seem to discharge 

 into the buccal mass at the usual two points. 



The jaw and radula were not examined but the description of 

 these organs has been repeated so many times that it does not 

 need to be quoted. Binney in the Manual of American Land 

 Shells, p. 263, 1885, considers them in detail. 



SOME PERUVIAN CLAUSILIID.E. 



BY HENRY A. PILSBRY. 



The species of Nenia noticed below were collected in the 

 valley of the Huallaga River, eastern Peru, by Dr. Bela Hub- 

 bard, in the course of geological exploration in that region. I 

 owe the privilege of studying them to Dr. Bryant Walker. 



NENIA BELAHUBBARDI n. sp. PI. 2, figs. 1, 2, 15-17. 



The shell is fusiform, rather slender, widest at the penult 

 whorl, attenuate above; quite thin; light brown variegated with 

 white, which appears on the striae only, in many small, irreg- 

 ular patches. Sculpture of fine, close, oblique striae, 12 or 13 

 in 1 mm. on the face of the last whorl. They are continuous, 

 very slightly irregular or waved, but appearing more so from 



