166 



THE MYRIAPODA OF NORTH AMERICA. 



The cephalic segment is convex, subround, sometimes somewhat truncate posteriorly. Its 

 breadth is just about equal to its length, but owing to the convexity appears less. The 

 basilar segment is much larger than the cephalic, and has the prebasilar fold well marked. 

 The posterior portion of the scuta are often margined with green, and, in some specimens, 

 the anterior part of the body is mottled with this color. In one individual the antenmc 

 are of a pea-green tint ; generally they correspond in color with the feet. The penultimate 

 scutum is large, with its lateral margins strongly arched. The terminal scutum is me- 

 dianly slightly subcarinate. The sterno-cpisternal sutures arc better marked than the 

 scuto-episcutal, which are, however, quite evident. It is noticeable that the terminal 

 scutum has a single median, instead of two lateral sutures. The preanal scale is rather 

 large, much narrowed, and very slightly emarginatc posteriorly. Where the marginal 

 spines of the lateral anal appendages exceed two in number, some of them are generally 

 very small and situated at or near the base of the terminal process. I have named this 

 species in honor of Prof. Edward D. Cope, with whom it has been my good fortune to 

 have been associated since the earliest dawn of our tastes for natural history. 

 Length 4i inches. 



TABLE SHOWING VARIATIONS IN SPECIFIC CHARACTERS. 







Spines on inner side of 



Spines 



on lower surface of 





Spines on 



mal appen- 



Number of 

 specimen. 



Labial teeth. 



basal joint of last pair 

 of legs. 



basal 

 legs. 



joint of last pair of 



Spines on angular 

 process. 



doges. 



Apical. 



Marginal. 



89 



4 



4 



2 



2 3 2 



2 



4 



2 





4 



5 



2 



2 2 4 



:; 



4 



2 







f'4 



6 



4 



4 5 4 



5 



5 



2 







4 



6 



3 



3 4 3 



5 



3 



1 



30! > 





4 



4 



2 



3 5 3 



2 



4 



1 







4 



4 



2 



3 5 3 



2 



5 



3 







4 



6 



3 



3 15 3 



4 



5 



3 







4 



5 



1 



3 2 3 3 



4 



5 



3 







6 



3 



2 3 3 



3 



G 



1 





4 



6 



2 



2 3 4 



2 



4 



2 





4 



5 



2 



3 4 3 



3 



3 



1 





4 



5 



2 



3 3 3 



3 



4 



1 





4 



5 



1 



2 4 3 



3 



4 



1 





4 



5 



2 



2 3 3 



3 . 



3 



2 



Hal. California. — Smithsonian Collection. 



S. BISPINIPES. 



S. olivacea, polita ; capitc olivacco-castanco ; mandibulis magrris ; segmento cephalico late ovato, antice leviter 

 emarginato, basali magno, prebasali nullo ; antennis 19 articulatis, antice pubescentibus ; labio leviter convexo, 

 sine suturis, minute punctato ; laminis dentalibus, latis, brcvibus, marginibus anticis rectis, angulis posticis externis 

 productis; denticulis 10, conicis, parvis scd acutibus ct distinctis, utrinque intimis tribus arete coadunatis, duobus 

 externis sejunctis; suturis scuto-episcutalibus inconspicuis, sed sterno-episternalibus modice conspicuis ; pedibus 



