6o 



THE MUSEUM 



Section four, Dentellaria, Schm., con- 

 tains 17 species, and a most interest- 

 ing lot they are. H. nuxdcnticulata, 

 Chem., is the type, but is not so often 

 found in collections as are H. obcsa. 

 Beck., H. dentiens. Per., H. Isabella, 

 Fer. , H. orbiciilata. Per. , H. badia, 

 Per., H. lychunchus. Mull., H. Jos- 

 cphinac, Per., H. pcrplcxa. Per., 

 and others. The section is mostly 

 from Martinique Island, a few coming 

 from Grenada, Antiqua, Dominica, 

 etc. They are thick, stout, heavy 

 lipped shells, of a brownish color, and 

 showing numerous folds or teeth, 

 somewhat similar to the American 

 Genus Polygyra. Section 5, Ccpolis, 

 Mont., contains 8 species, of which 

 H. cepa, Mull., is the type. They 

 are mostly from Jamaica and Porto 

 Rico. They range from medium to 

 large, are thick lipped, and show many 

 of the folds of the preceding section. 

 Section 6, Lucerna, SwAiN, contains 

 41 species and varieties, many of 

 which are large and imposing shells. 

 The type, H. acuta, Lam., is one of 

 the largest and finest in the section. 

 Nearly if not all of the section are 

 from Jamaica. The shells are mostly 

 deep brownish color, and shiny, still 

 some are beautifully banded with yel- 

 low and other colors. H. soror. Per., 

 and H. bronni, Pfr., being of the lat- 

 ter class. Near relatives to the type, 

 are H. lucerna. Mull., //. Chcinnit- 

 ziana. Per. , etc. , //. valida, C. B. Ad. , 

 H. sinuata, Mull., H. sinuosa. Per,, 

 and //. invalida, C. B. Ad., are also 

 after the //. acuta style, but much 

 smaller in size. Section 7, Caracollus. 

 Mont., are also large shells, and in 

 some cases very handsome. 15 spec- 

 ies and varieties are given, of which 

 the large and imposing H. carvcolla, 

 Linn., is the type. They are mostly 

 from Eastern Cuba and Hayti. Part 

 of the section are large brownish shells, 

 the balance, being beautifully banded. 

 Section 8, Oxcliona, Morch., contains 

 8 species of beautiful color from Bra- 

 zil, Costa Rica, Mexico, etc. They 

 are in form the shape of a trochus, 



with a pointed elevated spire. They 

 approach more nearly the beautiful 

 trochoidal specimens of the Solomon 

 Isles than any others with which I am 

 familiar. //. bifasciata, Burrow., 

 from Brazil is the type. It is of a 

 milky white, spirally encircled by dark 

 purplish-brown narrow bands, and 

 lines. Section 9, Isoineria, Albers. , 

 contains 34 species. They are mostly 

 large, dark, chestnut or chocolate-col- 

 ored shells, confined to the Andes of 

 Peru, Ecuador and Colombia, allied 

 to the Labyrinthus, but with the 

 mouth parts less developed, the teeth 

 when present being generally small. 

 The type is //. areas, Koch. This is a 

 large shell nearly two inches in diam- 

 eter, deep, rich chestnut-brown color, 

 spire depressed, etc. The section as 

 a whole are hard to obtain and I am 

 sorry to say almost unrepresented in 

 my collection. Section 10, Labyrin- 

 thus, Beck., contains 20 species. H. 

 labyrintlius, Desh., from Ecuador, is 

 the type. The section as a whole in- 

 habits that portion of Northern South 

 America, not inhabited by species of 

 Isoineria, and generally less elevated 

 country than the mountainous Andean 

 region, to which the latter group is. 

 confined. The main characteristic, is 

 that the teeth are more develoyed than 

 Isoineria, otherwise the two sections, 

 have much in common. 



Group four, and last, is Solaropsis, 

 Beck. Thirty species are given, of 

 which the type is H. pellisserpentis, 

 Chem. They are mostly forest snails, 

 living on the ground under stones and 

 in hollow trees. As a rule are hand- 

 some, being of a type not easily de- 

 scribed. H. pellisserpentis, Chem. , 

 is a depressed, convex species, about 

 \\ inches across, light brownish, with 

 ill-defined narrow streaks following 

 the lines of growth, a series of chest- 

 nut arrow-shaped spots below the sut- 

 ures and a similar narrow one at the 

 periphery. H. Brarjiliaiia, Desh., is 

 also quite typical of the section. The 

 species mostly come from Brazil, Ecu- 

 ador, Arg. Republic, etc. 



