156 ONYX AND DIPELTIS, 



1. Dipeltis minor, n.sp. Female unknown. 



r ?) 2- 3 "s a* 9 i-9 r ' 26 mm - ^he ciiticLila, bears no conspicuous hairs. 

 The neck is conoid to near the slightly oblique nerve-ring, 

 becoming thence more and more decidedly convex-conoid until it 

 at last becomes rather suddenly almost acute at the mouth. The 

 length of the ellipsoidal lateral organs is one-fifth as great as the 

 distance between the mouth and the nerve-ring, and they are 

 about one-half as wide as long. Their thickened margins present 

 a double contour. Posteriorly the oesophagus becomes three- 

 fifths as wide as the neck. The portion of the alimentary canal 

 immediately behind the distinct cardiac collum is usually pressed 

 to one side by the large ventral gland, which is two-thirds as wide 

 as the body and twice as long as wide. The position of the porus 

 is unknown to me. The simple, arcuate, linear spicula are of 

 nearly uniform size throughout and are about as long as the anal 

 diameter. An accessory piece less than half as long as the spicula 

 is seen to curve inward and backward from the anus. The tail is 

 conoid to the convex conical terminus, which is one-third as wide 

 as the base of the tail and is supplied with an outlet for the caudal 

 glands similar to that commonly seen in species of Chromadora. 



Hah. The single male specimen seen was taken from sand on 

 the coast of Ceylon in the month of March. 



2. Dipeltis cirrhatus, Eb. * 9 ; 7 y * 9 £ 5 gj*mp. The cuti- 

 cula is said to be smooth. Submedian rows of conspicuous hairs 

 occur near the head, extending from the anterior extremity as far 

 back as the two eye spots. These latter are situated half way 

 between the nerve-ring and the mouth. The neck is conoid to near 

 the head, where it becomes convex-conoid. The mouth is said to be 

 surrounded by three papillae. The conoid oesophagus is on the 

 average one-third as wide as the neck. The cardiac collum, 

 shallow but distinct, marks off the beginning of an intestine which 

 is two-fifths as wide as the body. The rectum would seem to be 

 longer than the anal diameter. The conoid tail is ventrally 

 arcuate and ends in a distinct outlet for the caudal glands. 



