. 14 CHILOPODA. 
6°. The tergites completely bisulcate and at least those at the hinder 
end of the body with raised edges. 
a’. Tibize of anal leg gradually narrowed posteriorly, tarsi slender; 
anal pleuree with long processes. . . . 2. « « «+ = btenuitarsis, sp. n. 
&". Tibue of anal leg parallel-sided ; pleuree shorter. 
. Head with two fine sulci; distal segments of the first 
maxillipedes inferiorly produced. . . . . ~~. + ~ Aeros, Girard. 
6°. Head not bisulcate; first maxillipedes normal. 
a’. Coxal plate of second maxillipedes (poison-jaws) densely 
punctured in front ; prosternal plates prominent. . . pachygnatha, sp. n. 
a Coxal plate smooth; prosternal plates normal. 
. Of larger size, ferruginous, with the hind borders of 
the terga dark green . 2» . . . 1 ee ee) Copeana, Wood. 
6°. Smaller, usually of a more uniform green tint . . . viridis, Say. 
1. Scolopendra morsitans. 
Scolopendra morsitans (Linn.), Kohlr. Arch. f. Naturg. 1881, 1, pp. 104-112 * (? all the synonymy). 
Scolopendra brandtiana, Gervais, Ins. Apt. iv. p. 280°. oe 
Hab. Mexico, Tampico! and Vera Cruz!?. (Artificially introduced.) 
This well-known species is found in almost all tropical and subtropical countries. 
2. Scolopendra subspinipes. (Tab. II. fig. 9.) 
Scolopendra subspinipes, Leach, Trans. Linn. Soc. xi. p. 883°; Kohlr. Arch. f. Naturg. 1881, 1, 
p- 967; Meinert, Proc. Am. Phil. Soc. xxiii. p. 202 (1886) °; Vid. Medd. Nat. Foren. v. 1886, 
p. 126%. 
Hab. Mexico (Eisen); Centra America‘. (Artificially introduced.) 
This species, like S. morsitans, is found in the tropical and subtropical parts of both 
Eastern and Western hemispheres. According to Meinert*, it occurs in Central 
America. The Mexican example, from which the figure here published has been taken, 
was submitted to me for identification by Dr. Gustav Hisen. 
3. Scolopendra gigas. 
Scolopendra gigas, Leach, Trans. Linn. Soc. xi. p. 3883. - 
Hab. Honpuras.—SoutH AMERICA; JAMAICA. 
For the synonymy of this species and references to its literature see Porath, Bih. Sv. 
Vet.-Akad. Handl. iv. 7, p. 5 (1876); Kohlrausch, Arch. f. Naturg. 1881, 1, p. 119; 
Meinert, Proc. Am. Phil. Soc. 1886, p. 191. 
S. gigas, the largest of the Centipedes, occurs in Jamaica and in the northern parts 
of S. America. According to Meinert (Vid. Medd. Nat. Foren. 1886, p. 125), the 
Copenhagen Museum possesses an example from Honduras. 
