Daphnella modesta

Scientific Classification


Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Order: Neogastropoda
Family: Raphitomidae
Genus: Daphnella
Species: Daphnella modesta Dall, 1890

Information

Remarks

Synonymy: Daphnella modesta Dall, 1890: p. 39, pl. 2, fig. 4.

Type Specimen: USNM 97341 (holotype), “Caloosahatchie River, near Fort Thompson, Florida” (Merrill, 1905, p. 217).

Original Description: From Dall, 1890 (p. 39): “Rare in the Caloosahatchie beds. Shell with a small, smooth, tilted nucleus of about two whorls and about four and a half subsequent whorls; shape short-fusiform, the whorls well rounded, the last much the largest; spire not more than half as long as the shell; spiral sculpture of numerous distinct, slightly elevated, subequal threads, with wider interspaces, in which near the aperture in the adult faint intercalary threads begin to appear; transverse sculpture of incremental lines, not very distinct, and (on the last whorl sixteen or seventeen) narrow, rounded, somewhat unequal wave-like ribs which begin at the suture, follow the curve of the lines of growth, cross the whorl and only fade away near the canal; they are about equally strong all the way; the last rib is a little stronger than the others; fasciole not strongly marked, the ribs cross it and the spirals are a little finer and more close-set upon it; suture distinct, not channelled, undulated by the ribs; notch wide and shallow; aperture elongated, not wide, the canal not differentiated, the body with very little callus; outer lip simple; throat without lire, Max. lon. of shell 6.5; max. lat. 3.0 mm. This pretty little species has no very marked characters, yet on comparison with the recent forms it seems to agree with none of them. It is nearest D. retifera Dall, but has a different surface. It recalls Mangilia biconica, but its characters are essentially those of Daphnella.”

Online Resources

WoRMS record 1821807

References

Dall, W. D. 1890. Contributions to the Tertiary Fauna of Florida, with especial reference to the Miocene Silex-Beds of Tampa and the Pliocene beds of the Caloosahatchie River. Part I. Pulmonate, opisthobranchiate and orthodont gastropods. Transactions of the Wagner Free Institute of Science of Philadelphia, 3(1): 1-200, pls. 1-12. BHL