New Myriapods from the Palceozoic Bocks of Scotland. 121 



year A. Macconochie added to the collection of the Geo- 

 logical Survey a specimen of Kccmpecaris, from the Lower 

 Old Eed Sandstone of the island of Kerrera, opposite 

 Oban, in the district of Lome. Many years ago Mr A. 

 Macconochie, while collecting from the Lower Carboniferous 

 rocks of Lennel Braes, on the river Tweed, near Coldstream, 

 obtained from them a very complete specimen of a Myriapod. 

 All these specimens are in the collection of the Geological 

 Survey of Scotland, and, by the kind permission of Sir 

 Archibald Geikie, the Director- General of the Geological 

 Survey, I now purpose to describe the forms, which are all 

 new to science. 



Genus Anthracodesmus, nov. gen. 



Forms with dorsal parts of body-rings and sculpturing 

 like those of Polydesmus, but with more than nineteen body 

 segments, and with eye-spots arranged in groups. 



Anthracodesmus Macconochiei, n. sp. 

 [Plate IV. Figs. 3, 3^] 



The only specimen from which the following description 

 is taken shows the dorsal aspect of a head and twenty- six 

 body segments of a small form, about 26 mm. long by about 

 3 mm. in extreme breadth. 



Head. — The head is subquadrate, with rounded angles, 

 somewhat broader behind than in front, its greatest breadth 

 being 2 mm. The back part of the head is well arched. 

 The eye-spots are arranged in clusters, just in front of the 

 posterior rounded angles, and the antennal pits are placed 

 just in front of the ocular areas, and nearer together than 

 them. The front of the face and upper lip are pitted, as if 

 they had been supplied with sensory hairs. The antennse 

 are made up of short small joints, and are club-shaped, as in 

 recent Millepedes. In the present case they appear to be 

 six-jointed, but as the right antenna is broken away from 

 the head, though its extremity is seen, there is some little 

 difficulty in counting the number of the joints, and some 

 may have been removed from the proximal end. Only three 



