180 S. H. SCUDDER OX SPIXED MYRIAPODS 



It may be well, in closing this paper, to refer to other myriapodal or supposed myria- 

 poclal remains from the paleozoic formations. No mention has been made of one, Palaeo- 

 julus dyadieus Geinitz, from the Saxon Permian, because its myriapodal nature has been 

 denied, 1 and it is now conceded by its author to be a fern, as shown by Sterzel, and in 

 any event is too imperfect to be discussed here. Three species of lulus have also been 

 named (only) by Fric 2 from the Permian rocks of Bohemia. Anthracerpes typus from the 

 Mazon Creek beds described by Meek and "Worthen, 3 which these authors were " rather 

 inclined to view as a myriapod " when first described, has been referred to the worms, and 

 was afterward so considered by its describers ; it is perhaps very fragmentary and may 

 belong here. Goldenberg describes and figures. 4 under the name of Athopleurion [Arthro- 

 pleurion ?] inermis, a jointed fossil from the coal measures of Saarbriick, which he considers 

 a crustacean, perhaps allied to Arthropleura, and which may possibly be a myriapod ; it 

 is, however, not worth discussion until something more perfect and somewhat resembling it 

 is found. Finally Jordan has described and figured, 5 and Goldenberg 6 also, another jointed 

 creature, also from near Saarbriick, which they consider a crustacean, and to which Jordan 

 has given the name of Chonionotus lithanthraca. It is here reproduced in PL 11, fig. 9. 

 It bears certain resemblances to these spiny myriapods, and perhaps belongs to Acanther- 

 pestes. It is however a mere fragment, consisting of only five segments, including perhaps 

 the head. The segments are about four times as broad as long, uniform in size, uniformly and 

 not greatly arched, with no division into an anterior and posterior subsegment. There is a 

 mediodorsal groove, a row of approximate subdorsal tubercles (broken bases of spines?) sit- 

 uated centrally on the segments, and a pleurodorsal series of similar but a little smaller tuber- 

 cles showing only on one side. These extend over the four segments behind the front one ; 

 this latter, is smooth and well rounded in front, as long as the other segments and may 

 possibly represent the head. The length of the fragment is 14 mm. and its breadth 8 

 mm. By the presence of two rows of spine-bases (?) on either side above (an}^ lateral 

 series not showing), it must be nearer Acantherpestes than Euphoberia ; provided indeed 

 it belongs in this group at all, which the fragmentary nature of the fossil by no means 

 allows us to assert. 



J Cf. Sterzel, Zeitschr. deutch. geol. Gesellsch., 30: 417- * Fauna saraep.foss., n, 48, pi. 2, fig. 20. 



426;Neues Jahrb. Mineral., 18T8, 729-731; see also p. 733. 6 Palaeontogr., iv, 12-13, tab. 2, fig. 3. 



2 Faun. Gaskohle Buhm., I, 31 (1879). "Fauna saraep. foss., I, 21, pi. 1, fig. 19. 

 s Geol. Surv. 111., II, 409, pi. 32, fig. 1. 



