THE S«)1>PL GIM^ OF AMKHICA PUTXAM. 26b 



and with two coinparalively Iniiii- fcatlipred hairs on cither sidf of tlie jtro- 

 jectin"^- point. 



Tiioiax, very small and weak; above, the tirst segment is closely attached 

 to the head while the other two appear continnous with the abdomen, but 

 with rt much less diameter. Beneath, the thora.v api)ears composed of the 

 basal plates of the three pairs of legs, whicli plates are immovable and are 

 separated by a very narrow depressed sternum. Tlie l)ases of the tirst are 

 more closely united to that of the labial sternum, and are separated from 

 those of the second i>air by (piite a wide and deej) groove in which is a pair 

 of stigmata. The second and third pairs are closer together. The second 

 pair ai'e trapezoiilal in sliape, having the front edge very nearly at right an- 

 gles with tlie median line, while tiie posterior eilge extends obliquely back- 

 wards. The third pair of sternal plates fits closely into the angle thu.s 

 formed — and between the two sides is ([uite a large triangular space -closely 

 connected with the genital jilate on the Hist joint of the abdomen. 



Legs: The tirst pair of legs stout and short, tlie tirst joint fixed (as above) 

 broader than long; second joint sub-triangidar, short, binding upwards: third 

 joint also .short sub-triaiigular. and bending nj>wards; fourtii joint (---^ femur), 

 about a.s long and nearly as stout as the .second and third, and bends upwards : 

 fifth joint, (tibia) longer and weaker, and bends downward; sixth joint (met- 

 atarsus) shorter and weaker titan tibia, bends downward; seventh joint (tar,- 

 sus). one-third as long as metatarsus, witli universal motion, terminated by a 

 small heel joint and cushion, and two large movable claws; each claw being 

 terminat'^d l)y a sharp movable (!) nail of darker color. All the joints cov- 

 ered with very tine slender hairs, some of thosi' on the metatarsus and tarsus 

 being much longer than others, and these two joints are further furnished 

 with a few stiff spines on the lower outer side directed outwards. This pair 

 of legs as a whole is directed slightly forwards. The second pair of legs 

 are very mucii like tlie tirst. but longer and stouter, with ratlier longer 

 hairs, etc. 



The tiiird pair of legs are mucii tiio longest ;ind stoutest, but, are not 

 quite as stout as the first ))air of palpi. They are as long as the entire !>ody 

 from eyes to anus. The first (fixed) joint bears two leaf-like appendages. 

 The second joint two, and the third joint one of these iippendages. The 

 second, third and fourth joints are short, stout, and have but little inde- 

 pendent motion, and what there is, is ui>wards. The rest of the joints cor- 

 respond closely in tlieir characters with the otiier legs, excei)t in size. The 

 basal joints .all i)resent a more or less triangular outline. The femur and 

 tibia are slightly swollen, wliile the metatarsus and tarsus are nearly cylin- 

 drical. Tlie tarsus of tlie third pair of legs is two-jointed and moderately 

 long. 



The abdomen is comj)osed of ten joints of nearly eipial size. The first 

 joint is longest and narrowest, and liears on the lower side tlie genital plates. 

 The genital plates are triangular in shape, covered with tine hairs. The 

 vulva is a long, narrow^ slit between the plates, enlarging trumpet-like at the 

 posterior end, composed of fleshy lips free of hairs; segments becoming 



