Anal legs glabrous, armed with two spines, one within, one beneath B 



B.— Head suborbicular ; prosternal teeth wanting, the margin straight or obscurely 



sinuous ... *sexspinosus Newp. 



Head subovate ; prosternal teeth two ; last 17 dorsal scuta margi led ; animal 

 smaller Georgicus Mein. 



DISTRIBUTION AND SYNONYMY. 



Californica Humb. et Sauss. = lanatipes Wood. 



Georgicus Meinert. Proc. Am. Phil. Soc. XXI, 1S0 (1885). — Georgia. 



gracilis Wood = lanatipes Wood. 



lanatipes Wood. Jour. Phila. Acad. V, 39 (1S62): Trans. Am. Phil. Soc. XIII, 

 175 (l855). — California. 



sexspinosus (Say) Newp. Trans. Li in. Sue., XIX, 407 (1845).— "Eastern 

 l". S." {Wood); Illinois! Washington, I). C. ! N. Y., Pa., Iowa. Va., W. Va., 

 i\ld., Mass., Ohio, Ky., Cal. 



spinicauda Wood = sexspinosus Newp. 



Scolopendropis helvola Koch = ? sexspinosus Newp, 



II. BRANCHIOSTOMA Newp. 



Only one species is reported from the United States by Saussure and 

 Humbert. 7 



B. celer Humb. et Sauss. Revue et Mag. de Zool. 1870, 202. — Carolina, 



Jamaica, Nicaragua. 



III. SCOLOPENDRA L., Newp. 



Numerous species of this cosmopolitan genus have been described 

 from the United States, but the number is here reduced to seven, with 

 an additional species which cannot be recognized from its description 

 and must stand until its type (supposed to be in Paris) can be re-studied. 



The species may be distinguished as follows ; (full descriptions of the 

 species will be found in Meinert, /. c. , 190, et seq. ): 



A. — First body-segment with a well marked transverse groove B 



First body-segment not grooved D 



B. — First tarsal joint of anal legs armed with a spur ; antenna; 23— 30-jointed . . .C 

 First tarsal joint of anal legs unarmed ; antenna; 17-jointed ; anal legs short, 



thick, armed with 11 — 12 spines, the angular process simple or bifid 



Woodii Mein. 

 C. — Species large (100 — 150 mm. long in adults); prosternal teeth large ; anal legs 



with 17 — 25 spines ; antenna; 24 — 30-jointed *heros Girard. 



Species smaller (60 mm. long); prosternal teeth small ; anal legs very short, 



armed with 10 — 17 spines ; antennae 23 — 24-jointed *viridis Say. 



D. — Femora of penultimate legs spinulose distally ; femora of anal legs armed with 

 40—60 spines, the angular process with 6— 8 or more ; antennae 17-jointed. . 



*crudelis Koch. 



7 Mission Scientifique au Mexique etc. 6ieme partie : Etudes sur les Myriapo 

 p. 192. This work contains a valuable catalogue of American Myriapods, which was 

 nearly complete at the date of publication, 1872. 



