GEOPHILUS. 37 
2. Geophilus toltecus. (Tab. III. figg. 8, 8 a-c.) 
Arthronomalus toltecus, Humb. & Sauss. Rev. et Mag. Zool. 1869, p. 159°. 
Arthronomalus (Polycricus) toltecus, Humb. & Sauss. Miss. Sci. Mex., Myriop. p. 143, t. 6. 
fig. 23 *, 
Colour testaceous, slightly darker anteriorly ; head and maxillipedes pale castaneous ; shining. 
Body attenuated posteriorly. 
Head sparsely punctured, marked posteriorly by two anteriorly diverging shallow sulci; rather wider in front 
than behind, with straight anterior and slightly convex posterior border, evenly rounded angles, and 
nearly straight sides ; nearly twice as long as wide; frontal plate distinct. 
Antenne: of moderate length, clothed with shorter and longer hairs ; the segments much narrowed at the base ; 
apical segment ovate, slightly longer than the penultimate. 
Basal plate narrow, but wider than long, narrower posteriorly than the first tergite, its sides strongly con- 
verging, mesially impressed ; prebasal plate invisible. 
Mazxillipedes sparsely punctured and hairy; cowval plate mesially impressed, very nearly as long as wide, sides 
parallel, anterior border bearing two pointed teeth, without chitinous lines, the pleure, seen from below, 
very narrow ; femur slender, with a single internal blunt tooth, largely overlapping the head at the sides ; 
claw bearing a sharp basal tooth, only slightly overlapping the head in front, the joint being about on a 
level with the anterior angle of the head. 
Tergites sparsely hairy, except the two first and the last two, bisulcate, some in the anterior half of the body, 
with two feeble impressions between the main sulci. 
Pleural prescuta larger than the tracheal sclerites which are in contact with the tergites. 
Sternites mesially impressed longitudinally, without distinctly defined porous area. 
Anal somite: tergite about as long as wide, not covering the pleure posteriorly and laterally, narrowed 
posteriorly ; pleure furnished with about 30 larger and smaller, more or less scattered pores, the 
pores set more closely together near the sternite ; sternite narrow, longer than wide, its sides posteriorly 
converging, lightly impressed ; presternal sclerites distinct ; legs slender (in Q ), composed of six segments, 
a little longer than the preceding pair, the segments nearly cylindrical and furnished distally with a few | 
long hairs, not armed with a claw ; two anal pores. 
Number of pairs of legs 51. 
Length 40 millim. 
Hab. Mexico, Eastern Cordillera and Orizaba (Saussure! *), Omilteme in Guerrero 
7000 to 9000 feet (H. H. Smith). 
8. Geophilus godmani, sp.n. (Tab. III. figg. 11, 11 a-c.) 
Colour ochraceous ; head and maxillipedes castaneous. 
Head longer than wide, its sides subparallel, lightly convex posteriorly ; posterior border straight, punctured, 
with two posterior longitudinal impressions. 
Basal plate narrow, narrower in front than the head, its sides diverging posteriorly, a little wider than the 
head posteriorly, but much narrower than the first tergite; prebasal plate invisible. 
Antenne setose, short, the segments nearly cylindrical and decreasing in length distally, the apical segment a 
little longer than the penultimate. 
Mawillipedes very large, as wide as the first tergite, largely overlapping the head laterally and anteriorly by at 
least the length of the claw; cowal plate punctured with a median longitudinal impression ; chitinous 
lines absent, pleurze just showing at the sides, the anterior border bidentate, the jaws directed straight 
forwards, parallel, punctured, the femur armed internally with a tubercle; the claw armed with a distinct 
basal internal tooth. 
Tergites bisulcate, smooth. 
Sternites with a median longitudinal impression. 
Anal somite wider than the one that precedes it; the tergite narrow, oblong, narrower than its prescutal 
piece, longer than wide, nearly parallel-sided, a little narrowed distally. Plewre large, inflated, considerably 
