ragin.] DESCRIPTIONS OF SPECIES. 37 
YEEMES. 
ANNELIDA. 
TUBICOLA. 
Genus SERPULA Linnaeus. 
* Serpula gordialis Schlotheim. 
PI. II, figs. 5-6. 
A round-tubed, nearly smooth, irregularly constricted, at first 
spirally coiled, then contorted Serpula, probably the same as that 
noted by Doctor Felix" from the upper Jurassic rocks of the Cerro 
de Titania in the State of Oaxaca, Mexico, and referred by him to 
Schlotheim's S. gordialis, is the commonest tubicolan of the Malone 
fauna, having been found at the anticline in the eastern base of 
Malone Mountain (in both Doctor Sainton's collections and mine), 
ind at the locality 1J miles east of Malone station. The largest tubes 
observed measure about 2.7 mm. in diameter, 1 to 2 mm. being a more 
ommon size. 
Serpula sp. 
PI. II, fig. 4. 
Not rare at the locality last mentioned is a large Serpula, appar- 
ently differing from S. gordialis chiefly in size, but perhaps also hav- 
ng a less constantly or less intricately contorted habit. As there 
"ound, it attains a diameter of at least 8 mm. 
Serpula sp. 
A single specimen of a third and well-marked species of Serpula 
vas obtained from the same locality, but was lost in the laboratory 
vhen it had received only preliminary study. The following are its 
characters so far as they were noted: 
Tube considerably smaller than an average one of Serpula gordi- 
dis, straight, round, and at least in part terete, its exterior orna- 
nented with close, uniform or nearly uniform, prominent, filiform, 
encircling costellse, so that its appearance recalls one of the smaller 
)f the wound wires in the lower register of a piano; an ornamenta- 
ion which contrasts strikingly with the plain to feebly and irregularly 
:onstricted exterior of the two other known Serpula? of this district. 
Beitrage Geol. u. Pal. Mex., pt. 3, p. 175. Palaeontographica, vol. 37. 1891. 
