1896.] SPIDERS FROM THE LOWER AMAZONS. 761 
in these situations the appearance of the webs of Tegenaria. No 
males were met with, and the greater part of the specimens obtained 
were immature. 
The following species of this group have been described from 
South America, but none of them appear to be identical with 
those which I have met with on the Amazons :— 
Thalerothele fasciata, Bertk. (2, 14 mm. long), Verzeichniss der 
Brasil. Arach. p. 24, 1880, fig. 2. Hab. Rio Janeiro; Venezuela 
and Colombia.—Of this species Bertkau remarks, “ scopula nulla ; ” 
while I. sanguineus, M. wiger,and Harmonica rufescens possess the 
scopula. This species also exhibits abdominal markings, so that it 
cannot be identical with H. rufescens. 
Diplura soricina, EB. Sim. (2, ceph. 9 mm. long), Ann. Soc. Ent. 
Fr. p. 189 (1889). Hab. Caraca.—M. Simon’s note, “* Abdomen 
fuscum, crebre testaceo punctatum, in medio maculis fulvis uni- 
seriatis,” proves that his species is not identical with either of the 
above three species. 
Diplura bicolor, E. Sim. (2,15 mm. long), Ann. Soe. Ent. Fr. 
p- 215 (1889). Hab. Caraga, Brazil_—The diagnosis ‘ Cephalo- 
thorax fulvo-rufescens “—* abdomen oblongum, atrum ”—“ in 
parte secunda utrinque inordinate testaceo punctatum, subtus late 
et crebre testaceo variegatum,” will not apply to either of the 
species under consideration. 
Diplura gymnognatha, Bertk.( 2,19 mm. long), Verz. der Brasi- 
lianischen Arachniden, 1880, p. 21.—‘ Hinterleib mehr gelbbraun, 
Bauchseite heller ”—“ Grundfarbe des Cephalothorax rothbraun.” 
Certainly not one of the three here described. 
Diplura longicauda, Auss.( 2 , carapace 10 mm. long), Verhand- 
lungen der k. k. zool.-bot. ete. 1871, p. 179. Hab. Quito. Type 
in coll. Univers. Vienna.—Ausserer makes no mention of any 
blotches on the abdomen ; and the spinners are far longer in pro- 
portion than those of H. rufescens. 
Diplura equatorialis, Auss. ( 2 ), op. cit. 1871.—Very similar to 
but larger than longicauda. Hab. Cordilleras, Ecuador. T'ype in 
coll. Vienna University.—Central anterior eyes one-half larger than 
laterals (sec. Ausserer). 
Diplura rogenhoferi, Auss. (2,19 mm. long), op. cit. 1871. 
Hab. Brazil— Obere Spinnwarzen so lang als das Abdomen.” 
‘“* Abdomen braun, mit 6 nach hinten gebogenen, diinnen, weiss- 
lichen Querstreifen, die sich gegen den Bauch verlieren.” Central 
anterior eyes larger than laterals (sec. Ausserer). 
Diplura cousin, E. Sim. ( 9 ,22-25 mm. long), Act. Soc. Bordeaux, 
1889, p. 400. Hab. Quito.—Labium with spinules at apex. Central 
anterior eyes a little smaller than laterals (sec. Simon). 
Genus IscHNoTHELE, Ausserer, 1876. 
Type. Ischnothele caudata, Auss., 2. Hab. Yucatan, Mexico. 
Verhandl. der k. k. zool.-bot. Gesell. Wien, 1876, p. 163. Type 
specimen in coll. Brit. Mus. Nat. Hist. 
Proc. Zoot. Soc.—1896, No. XLIX. 49 
