808 PROCEEDINGS OF THE ACADEMY OF [DeC, 



and XX which the two pairs respectively occupy. The glandular 

 portion and the muscular duct are sharply differentiated, and the 

 latter arises directly from the end of the former. The former is 

 about three times as thick and three and one-half times as long as 

 the latter, cylindrical and tubular, with a distinct lumen throughout 

 and thick walls composed of gland cells in various stages of activity. 

 The integuments are translucent and the colors dull in life. The 

 anterior and usually the extreme posterior ends are hair brown, varying 

 in shade ; the clitellum is russet, and the remainder of the body neai-ly 

 salmon pink or sometimes ecru. Through the less pigmented portions 

 of the skin the blood vessels show conspicuously of a deep purple color. 

 These worms are very sluggish, but may be stimulated to greater ac- 

 tivity by exposure to light, which they seek to avoid. They ovcur 

 in moi-;t sandy soil. 



