226 Mr. R. I. Pocock on 
from Rio, is an immature rubbed specimen belonging to an 
indeterminable genus. 
Ischnocolus rubropilosus, Keys. (op.cit. p. 12), from Neu Frei- 
burg, is based on the young of one of the Homeommatee. 
Ischnocolus janetrus, id. (op. cit. p. 13), belongs apparently 
to the genus Magulla, Simon. 
Hapalopus villosus (adult 3), Ischnocolus pilosus (very 
young ¢), Ischnocolus nigrescens (half-grown ¢), Crypst- 
dromus perfidus (adult 9), Crypsidromus funestus (adult ¢ ) 
(Keys. op. cit. pp. 7-15), are all based upon different sexes 
and ages of the same species, and this bears a suspicious like- 
ness to Mygale fusca ot Perty. Amongst species known to 
me it is most nearly allied to Homeomma versicolor, Koch. 
At all events, it is not an Lschnocolus nor a Hapalopus, nor 
probably a Crypsidromus. 1 am not, however, acquainted 
with the type species of the latter genus, but some of the 
other species that Ausserer referred to it, e. g. Crypsidromus 
macropus, are undoubtedly not congeneric with villosus. 
Cyrtosternum cursor, Auss. (op. cit. p. 176).—The chief 
character of the genus Cyrtosternum, of which the name, on 
the grounds of its preoccupation, has been altered by Simon 
into Cyrtopholis, is the strong convexity of the sternum. 
There appear to me to be no reasons for supposing that the 
species from which Simon drew up his diagnosis of Cyrto- 
pholis (‘ Hist. Nat. Araignées,’ i. p. 143) is congenerie with 
C. cursor. 
Crypsidromus pernix and C. macropus, id. (op. cit. 
pp- 178, 179), from Mexico, are not congeneric, since the 
former has the two tibial spurs of the male well developed 
and of normal form, and the latter is without them. Which 
of the two, if, indeed, either, will prove to be a Crypsidromus 
in reality, ¢. e. congeneric with the type C. dsabellinus, I 
cannot say, since | am not acquainted with the last-named 
species, and no one, so far as I am aware, has described the 
male. Simon’s Crypsidromus is of the macropus type. 
Callyntropus convewus (C. Koch).—The specimen in Key- 
serling’s collection identified by Ausserer as converus of 
C. Koch, upon which Ausserer based his genus Callyntropus, 
appears to me to be the young of a Lasiodora or of some 
genus of Theraphosee. The British Museum has other 
examples from British Guiana which fall into Callyntropus, 
