Me) ARANEIDEA. 
am unable to ascertain whether the tarsal pad is or is not divided by a row of sete, so 
that I leave the species at present distinct from Eurypelma. It belongs, if the tarsal 
pad be not divided, to the Homceommatee, characterized by the apical half only of 
protarsus ii. being scopulate. I cannot myself, however, recognize this character alone 
as sufficient for a sectional distinction, or even perhaps for a generic, but rather as 
characteristic of a group within the genus Lurypelma. 
AVICULARIA. 
Avicularia, Lamarck, Hist. Nat. Anim. sans Vert. v. p. 107 (1818). 
Type Avicularia avicularia, Linn. = Avicularia canceridea, Lam. 
Avicularia glauca. . 
Avicularia glauca, E. Simon, Ann. Soc. Ent. Fr. 1891, p. 312*; Act. Soc. Linn. Bord. xliv. p. 339 
(1892) *. 
Type, 2, juv., in coll. E. Simon, Paris. 
Hab. Panama! ?. 
The type specimen, kindly submitted to me for examination by M. Simon, is evidently 
an immature example, and it will always be difficult to decide exactly as to which 
particular species of Avicularia it belongs. 
Section ARACHNOMORPHZ. 
Fam. DYSDERIDZ. 
Lung-sacs two; tracheal stigmata two; the four stigmatic orifices closely grouped; posterior pair not 
convergent, coalescent or migrant. Tarsal claws variable, two or three. Eyes six, in three groups 
of two each. Spinners six. Colulus small, but very distinct. Calamistrum and cribellum absent. 
Mandibles not striate on the outer side; femur of palpus with no spur or opposing spine. 
This family is very scantily represented at present in the material obtained from 
Central America, one (or two) species only, of the genus Ariadna alone *, having been 
taken, which belong to the subfamily Segestriine. 
Subfam. SEGHESTRIINA. 
Eyes in three groups, each consisting of a pair of eyes. Tibie and protarsi i., ii., and iii. armed beneath with 
stout spines. Protarsus iv. also with a few spines beneath, but not tibiaiv. Tarsal claws three ; anterior 
pair of spinners stouter and longer than the others, closely situate at the base, with small, distinct 
colulus. 
* Ariadne mexicana, Banks, Trans. Calif. Acad. Sci. i. p. 212 (May 1898): the locality given for this 
species, La Chuparosa, is in Lower California (cf. loc. cit. p. 207), so that the species cannot be included in 
the present list. 
