544 RICHARD EVANS. 



the contracted state of the latter, in many cases they are 

 drawn into the grooves. 



The Feet: — The feet have almost the same structure as 

 in the other species belonging to the genus Eoperipatus. 

 They carry only two primary papillfe on the distal margin, 

 one in front and one behind. Each papilla consists of a basal 

 and an apical part, the latter being provided with a pointed 

 spine. The ventral elevations or ridges are not so well 

 marked as in the species Weldoni and Horsti. The proxi- 

 mal pair of these elevations agrees with those of the above- 

 mentioned species in that they carry only one spine, but the 

 distal pair differs, for they are provided with two spines to 

 each elevation (fig. 2). Lest the second spine should have 

 been missed, a renewed examination of the feet of both 

 Weldoni and Horsti was made, but only to confirm the 

 conclusion previously reached. 



III. Conclusion. 



In conclusion, my best thanks are due to Professor Lan- 

 kester and to Mr. Pocock, who sent me for examination the 

 first specimen obtained in this country from the Malay 

 Peninsula, of the species here described, and for allowing me 

 to dissect it as far as was necessary to determine its specific 

 characters. 



EXPLANATION OF PLATE 88, 



Illustrating Mr. Richard Evans' paper "On Eoperipatus 

 Butleri" (nov. sp.). 



All the figures were traced with the camera lucida. 



Fig. 1. — This figure represents the mouth opening and the papillae which 

 surround it. It is in a beautifully expanded condition, and will serve to show 

 the general arrangement of the papillae round the mouth in all the Malay 



