NATURAL SCIENCES OP PHILADELPHIA. 333 



It was found in great numbers with B. pallidior Sowb., climbing high Copaiva 

 trees, called " Copal" by the natives, on dry mountains 800 to 1000 feet high. 

 It was never observed on the table lands or low lands. Mr. Xantus traced it 

 from Cape St. Lucas some 350 miles up the coast. 



Pedipes lieata W. G-. Binn. Cape San Lucas. (J. Xantus.) 



Description of two new species of HELIX. 



BY A. D. BROWN. 



Helix Hubbardi. Figs. 1 and 2, mag. 5 diams. 

 T. umbilicata, depressa, tenui, oblique striatula, basi striis obsole- 

 tis, eorneo-rufeseente ; laminis 4, 2 parietalibus, supera prominente, 

 infera lineari, 2 in fundo anfractus ultimi ; spirit vix elevata ; anfr. 

 4^ 5, convexis, ultimo antice vix descendente ; umbilico lato ; aper- 

 tura perobliqua, subcircularis ; perist. b r eviter reflexo, simplici. 

 Diam. maj. 2^, alt. 1, mill. 



Ilab. Prope Indianola, Calhoun Co., Texas. (E. W. Hubbard.) 

 Shell umbilicated, depressed, thin, obliquely striated, striae upon 

 the base obsolete, brownish horn color ; laminae 4, 2 upon the par- 

 ietal wall, the upper one prominent, the lower very faint, 2 deep 

 within the last whorl ; spire slightly elevated ; whorls 4} 5, convex, the last 

 slightly descending ; umbilicus wide ; aperture very oblique, subcireular ; 

 peristome slightly reflected, simple. 



Allied in shape to H. pulchella Mull., and in the parietal laminae to H. luby- 

 rinthica, Say. From the former it differs in the presence of the laminae, and 

 in being striate ; from the latter, in its more depressed form, wider umbilicus, 

 finer striae, and internal laminae. 



Helix tkizonaloide-s. 



T. imperforate, globosa, solida, oblique striata, (pallide cornea) ?, zonis 

 3-castaneis cingulata ; spira elevata ; anfr. 5, convexiusculis, ultimo pone 

 labrum sorobieulato intus tuberculum formante ; apertura, perobliqua, ovata, 

 intus bidentata, dente altero ad marginem basalem, altero intra aperturam ; 

 perist. albo, late reflexo, umbilicum tegente. 



Diam. maj. 21. min. 17, alt. 12, mill. 



Hab. Haiti ? 



Shell imperforate, globose, thick, obliquely striated, (pale horn color) ?, en- 

 circled by three brown bands ; spire elevated ; whorls five, rather convex, the 

 last furrowed behind the lip, forming a tubercle within ; aperture very oblique, 

 ovate, with two teeth, one on the basal margin, the other within the aperture ; 

 peristome white, widely reflected, covering the umbilicus. 



Allied to H. trizonalis, G-rat., and also in the peculiar arrangement of the 

 teeth to H. cepa, Mull. From the former it differs, in having the umbilicus 

 entirely closed ; in the internal tubercle, which is stouter than in trizonalis ; 

 in the more elevated spire ; in being heavier, and more coarsely striated. 

 From cepa, it is readily distinguished by its more elevated spire, smaller 

 size, and more oblique aperture. 



I am in doubt as to the locality of this shell, but from the singular arrange- 

 ment of the teeth, resembling both trizonalis and cepa, am disposed to refer 

 it to Haiti. 



A copy of the Proceedings for July and August was placed on the 

 table. 



1861] 



