28 BULLETIN : MUSEUM OF COMPARATIVE ZOOLOGY. 
and the Argentine Republic: G. alfredi, danielis, and peracce ; and also 
describes female specimens of prismaticus Villot and paranensís Camer. 
1895. Camerano describes males of G. latastei, n. sp. from Santiago, 
Chile. Römer describes Chordodes variopapillatus, n. sp. from Brazil; a 
female of G. violaceus Baird from Arizona, a male of G. aquaticus Linn. 
from Brazil, and a female of the same species from Chili. 
1896. Römer, in his excellent revision of the Gordiacea, regards the 
following American species as tenable: G. platyurus Baird, eneus Villot, 
paranensis Camer., Chordodes brasiliensis Janda, Chordodes pilosus 
Mobius, and © variopapillatus Rómer; the following as synonymes 
of G. aquaticus Linn. : robustus and lineatus Leidy, fasciatus Baird, sub- 
spiralis Diesing; G. reticulatus Villot as a synonyme of G. violaceus 
Baird ; and the following species as untenable: G. chilensis Blanchard, 
‚prismatieus Villot, Chordodes parasitus Creplin, G. parasitus Diesing, 
G. deshayesi Villot, and G. verrucosus Baird. According to Römer, 
Gordius varius Leidy becomes Ohordodes varius Leidy. In this year 
Camerano describes Chordodes balzani, n. sp. from Bolivia. 
1897. Camerano (’97") mentions specimens of G. obesus Camer. from 
Santiago and Gualaquiza, and of Chordodes bouvieri Villot from Guala- 
quiza ; and also describes males of ©. feste, n. sp. from Cuenca. In a 
second paper (97”) he describes O. talensis, n. sp. from Bolivia; he notes 
G. alfredi Camer. from Tala, G. varius Leidy from Bolivia, and O. peracce 
from Tucuman ; and he further describes male and female specimens of 
O. brasiliensis Janda from S. Lorenzo and Tala, 
CRITIQUE, 
There is considerable confusion in regard to the tenability of certain 
of the preceding American species, mainly due to insufficient diagnoses, 
so that it is necessary to relinquish some of them. Those species which 
are insufficiently described, and hence untenable, are in my opinion the 
following: Chordodes parasitus Creplin ('47), Gordius chilensis Gay 
(Blanchard) (49), G. aquaticus Leidy ('50), G. chordodes Diesing ('51), 
G. tenuis, dubius, and acridiorum of Weyenbergh (79). G. fasciatus 
Baird ('53) seems also inadequately described. The description of G. sub- 
spiralis Diesing is sufficient for identification, though in the descriptive 
part of this paper we shall find it to be possibly synonymous with @. 
aquaticus robustus (Leidy). Leidy’s description (’51) of his G. lineatus 
is really insufficient; but this species is nevertheless tenable, since I 
had opportunity to examine the type specimens, and have found them 
to differ from any other species of Gordius, G. reticulatus Villot (’74) 
