1896.] SPIDERS FROM THE TOWER AMAZONS. 759 
from asmall tubercle, and with rufous pubescence. Sigilla present, 
submarginal. Labiwm broader than long, clothed with hairs, not 
cuspidate. Coa of pedipalp twice as long as broad ; anterior basal 
angle studded with a central band of minute cusps; anterior 
apical angle slightly produced, not cuspidate: on its inner side, 
about the middle, towards the inner basal angle, is situated a series 
of 10 stout clavate spines, whose free ends play across the stout 
separate hairs on the base of the mandible, these together con- 
stitute the “lyra” and “ pecten” of the stridulating-organ. 
Legs short and stout. Femora not spinose; patelle i., ii., and 
iv. not spinose, iii. with one or two spines. ‘Tibia i. and ii. with 
three spines on inner side towards apex, which is scopulate ; iii. 
aud iv. with a few spines on either side. Protarsi i. and ii. armed 
beneath with 5 and 6 or 7 spines respectively ; of iii. and iv. also 
spinose. Tarsi i. and ii. short, slightly curved, transversely striate 
above, clothed with a scopula; iii. and iv. not scopulate. Tarsal 
claws 3; superior pair armed beneath with a double series of 6-7 
denticles. Tarsal claw of pedipalp with a single row of 5-6 
denticles. 
Abdomen shorter and broader than in M. rufescens. Mamille 
four: posterior pair shorter than abdomen ; basal joint the longest, 
second and third equal: anterior pair a little over half the length 
of the basal joint of the posterior pair, almost as wide apart as 
their length. 
Comparative measurements in millimetres.— Q. Carap. 11 long., 
10 lat. Abd. 13 long.,9 lat. Cephl. area 7 long. Stern. 6 long., 
4 lat. Coxa of pedipalp 4-5 long., 2°5 lat. Pedes, long. i. 35— 
u. 33—ili. 31—iv. 38. Artl. i. long. 5—2-5—8—5—6—6—3°'5. 
Artl. iv. long. 455—25—8-5—4—7—85—4.  Postr. mam. 11 
long. Artl. 4—3:5—3°5. Mandib.5-5long. Antr. mam. 2°5 long., 
2 sept. 
Numerous specimens of the female sex of this handsome species 
were taken at night as they sat in the entrauce of the tube of their 
large “« Agelenoid ” webs in the forest near Santarem. Many were 
also taken under logs of wood, where the web and tube assume 
the character of those of the genus Celotes in Europe. 
MELODEUS NIGER, n. sp. (Plate XXXIII. figs. 2, 5.) 
_ 2.20 mm. long. Type in coll. Brit. Mus. Nat. Hist. 
Hab. Santarem, Lower Amazons. 
2 .—Colowr. Carapace sepia-brown, clothed with silky rufous 
pubescence. Abdomen deep brown, clothed with grey hairs; 
having on the dorsal area a double series of 5 obliquely transverse 
rufous bars, the last three often interrupted at their extremities ; 
breaking up into irregular spots towards the spinners. Legs, 
sternum, and labium deep brown, clothed with black hairs and dark 
grey pubescence. Mandibles black, clothed above with rufous 
pubescence. — 
Carapace longer than broad; cephalic area more than half 
the length of the carapace. Central fovea deeply recurved; 
