1896.] SPIDERS FROM THE LOWER AMAZONS. 755 
of the type female being furnished with a dense scopula. The lyra 
also differs considerably in character from those of the three species 
here described. 
Besides these forms of Diplurina, of which the females (and 
doubtless the males as well) possess the lyra and pecten, there are 
before me others which, being otherwise closely allied, possess no 
lyra or pecten. 
A male adult and a female, apparently immature, from Peru, 
present characters which, in conjunction with the absence of 
stridulating-organs would seem to warrant the formation of 
another genus for their reception. Whether these will eventually 
prove to be congeneric with Diplura macrura (C. K.) I cannot say, 
but should not be surprised if such were the case. 
For the present I torm a genus Neodiplura’ for the reception of 
those which possess no stridulating-organs. Of D. cousini, 9, 
Sim., of which the labium is spinulose; D. equatorialis, Auss., 2 , 
closely allied to D. cousini (sec. Simon); D. longicauda, Auss., 2, 
with spinners longer than the abdomen; and D. rogenhoferi, Auss., 
Q, I cannot speak with any certainty. The characters given 
would apply fairly well, from a generic point of view, to any of 
the Dipluriform spiders. 
HarMontcon, gen. nov. 
Posterior spinning-mamille as long as abdomen ; terminal segment 
the longest. Legs longer, more slender. Fany-groove with a single 
more lightly scopulate. First pair of legs a little longer than fourth. Tarsal 
claws 3. Superiors armed with a double series of denticles. Fang-groove 
armed on the outer side with a single row of teeth; floor of groove towards 
base studded with cuspules. _Coxa of pedipalp furnished on inner side with 17 
long claviform spines and a thick pad of nutoberless smaller spines, interspersed 
with claviforms. Base of mandible furnished with seven or eight stout spini- 
form hairs, incrassate at base, the first five isolated. These form the lyra and 
pecten of the stridulating-organs. 
? NEODIPLURA, gen. noy. 
No lyra or pecten on coxa of pedipalp and base of mandibles respectively. 
Tarsi and protarsi i. and ii. fairly densely and entirely scopulate; the former 
with no central series of sete ; the latter with spines amidst the scopulz. arsi 
iij. and iv. densely and entirely, protarsi iii. and iy. slightly and towards apex, 
scopulate. Tarsal claws 3; superiors armed with a double series of denticles. 
NzopIPLurRA JELSEU, n.sp.(g 2). Hab. Peru. Type e coll. W. Kulezynski, 
Cracow. (Plate XXXV. figs. 5, 10, 11, 14.) 
Colour. Carapace mahogany-brown, clothed with short silky yellow 
pubescence ; abdomen brown, clothed with long silky yellow hairs, with a 
double dorsal series of 5 or 6 short, transverse, dull orange bars. Sternum and 
legs brown, with short silky yellow hairs. 
Carapace a little longer than broad, flat, slightly raised behind eye-tumulus, 
with a shallow depression on either side and a recurved groove behind eyes, 
Central fovea small and recurved. Eye-tumulus prominent, diameter of 
anterior centrals larger than the axis of laterals; less than one diameter apart; 
less than half from laterals. Anterior row almost straight, slightly procurved. 
Posterior centrals smaller than. posterior laterals.and. almost in contact with 
