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——.. 
MEMOIRS OF THE RATIONAL ACADEMY OF SCIENCES. 
Plate YIII. 
Scoterpes copei (Pack.), enlarged.—la, transverse section of the body, showing the origin of the legs beneath, 
and, above, the position of the setiferous tubercles; 16, front view of the head, g ; lc, antenna; Id, the 
same still more magnified; le, terminal joint of the same, showing the position of the set* as seen in 
outline, the nerve cells, and the three tactile or olfactory (?) rods (o. r .) at the end; sd, an abnormally enlarged 
seta; 1/, under lip,or deutomala ; hyp., “ hypostoma; ” stip,i., internal stipes; stip,e., external stipes ; the 
former bearing the labiella, lah., and malulella, the latter (external stipes) bearing the external (mal. e.) 
and internal malella ( mal.i .); lg, end of the under lip highly magnified ; 16, another view of the labiella 
and stipes of one side; li, genital of male, with the rudimentary eighth pair of legs ( p ), between which is 
the genital armature (16), more highly magnified at 1Z, having on each side a rudimentary lamina exterior 
(Z. e.), a lamina interior (Z. *.), and between them a stout spine, ending in a tuft of slender, stiff spinules; 1 j, 
one of the two-jointed rudimentary feet, ending in a single claw; lm, two of the lowermost et® on the 
segment just behind the genital armature. 
Figs. 1 and la were drawn by J. H. Emerton ; all the others by the author. 
Plate IX. 
Fig. 1. Cambala annulata (Say), enlarged.—la, front view of head enlarged. Emerton del. 
Fig. 2. Cryptotrichus ccesioannulatus (Wood). (2 a, eyes of a species of Julus); 26, antenna (from Alabama); 2c, the 
last two joints enlarged; 2 d, antenna of specimen found two miles from Mammoth Cave, the last joint bear¬ 
ing two terminal olfactory (?) rods; 2c, a leg ; 2 f, a pair of legs; 2 g, eggs, drawn in the same proportion as 
Fig. 2. 
Fig 3. Lysiopetalum lactarium (Say).—Head and first four body-segments ; 3a, eyes; 36, end of the body ; 3c, antenna; 
3 d, last joint of the same with four two-jointed olfactory (?) rods; 3e, a pair of legs; 3/, base of the same 
enlarged ; ex., coxa ; st., one side of the rudimentary sternum; 3 g, one of the first pair of legs, with but four 
joints, the last bearing a comb-like series of setae ; 36, genital armature, $, of one side; lam. e, lamina exte¬ 
rior ; lam. i, lamina interior. 
Figs. 2 and 3, with details, drawn by the author. 
Plate X. 
Rhyncholoyhus cavernarum Pack.—la, the same drawn from another individual; 16, two cheliceres and a pedi- 
palp; lc, end of third leg (second leg the same). All the figures much enlarged. 
Loelaps f or' Holostaspis ? ivyandottensis Pack.—2a, pedipalp; 26, end of first leg. 
Leelaps (=Iphis ?) cavernicola Pack.—Highly magnified. 
Gamasus (or Hypoaspis ?) troglodytes Pack.—4a, mandible and pedipalp; 46, end of first leg; 4c, end of one of 
the third pair of legs, side view ; the same, dorsal view. 
Gamasus stygius Pack.—5a, cheliceres (mandibles) and pedipalps; 56, end of second leg ; 5o, end of a pedipalp. 
Sejus 1 sanlorni Pack.—6a, month-parts and first pair of legs. 
Damams bulhipedatus Pack. J. H. Emerton del. 
Perhaps the nymph of the preceding (Troussart), or a species of Hypoaspis (Michael). J. H. Emerton del. 
Uropoda lucifugus Pack. J. H. Emerton del. 
All the figures, except 7 and 9, drawn by the author with the camera lucida. 
Plate XI. 
Fig. 1. Bryiobia f (or Penthalaius ?) weyerensis Pack.—la,end of first leg; 16,end of second leg 
Fig. 2. Oribata alata Pack.—Dorsal view ; 2a, the same, ventral view. Emerton del. 
Fig. 3. Chthoniuspackardii Hagen.—3a, drawn from a younger specimen (Emerton del) ; 31 uieimeres (mandibles); 
3c,one of the cheliceres, showing the comb-like appendage, or serrula (s.) within at the base; 3d, the same 
enlarged ; 3e, barbed set® on the chelicera ; 3/, a pedipalp (chela); 3g, one of the first pair of legs ; 36, end 
of 3g ; 3 i, a fourth leg ; 3j, end of a fourth leg. Author del. 
Fig. 4. Chthonius cweus Pack.—4a,cheliceres of right side; 46,pedipalp (chela); 4c,a “finger” of 46. 
Plate XII. 
Fig. 1. 
Phalangodes flavescens (Cope), from Wyandotte Cave.— la, the eyes seen from above ; 16, the ocellar eminence 
with the eye at the base; lc, section through the same, involving one eye; lc', section through the lens 
and retina of the eye ; lc", eye of example from Wyandotte Cave; lc'", seen sidewise in var. caecum ; Id, a 
chelicer ; Id', musculature of the same; le, a pedipalp, showing also its muscles ; If, last three tarsal joints 
of the fourth leg (the claws not well copied by the lithographer); lg, end of one of the second pair oi 
16, a second leg from a specimen from Weyer’s Cave ; li, li', one of the second pair of legs, of exam¬ 
ple from Senate Chamber, Wyandotte Cave; 1 j, the same from the same locality; 17c, the same from Bat 
Cave (Carter Caves); 1Z, first tarsus of example from Weyer’s Cave; lm, penis of a Wyandotte example 
ending in four teeth, the fourth the longest; In, lateral view of penis of P. flavescens, var. ccecum ; In', In", 
other views of the same, with the muscles of the second joint. 
t 
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X 
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