EUPERA. 553 
moderately long, smooth. No pallial sinus. Often marked with dark spots, which are 
visible on the outside and on the inside of the shell. Two long siphons, united at 
the base. 
Inhabits Central and South America, including the West-Indian Islands; and also 
Tropical Africa. 
1. Kupera maculata. 
Cyclas maculata, Morelet, Test. Noviss. ii. p. 25 (1859) ' (nec C. maculata, Anton, Verzeichniss d. 
Conchyl. 1889, p. 14). 
Spherium maculatum, H, & A. Adams, Gen. Recent Moll. ii. p. 4507; Prime, Monogr. Am. Corbi- 
culade, p. 55, fig. 55°; Sowerby, in Reeve’s Conch. Icon. xx., Spherium, t. 3. fig. 21°. 
Limosina maculata, Clessin, in Martini & Chemnitz, Syst. Conch.-Cab. ed. 2, Cycladeen, p. 249, 
t. 46. fig. 12 (copied from Prime) *. 
Spherium yucatanense, Fisch. & Crosse, Miss. Scient. Mex., Moll. ii. p. 653, t. 63. figg. 1, 1a, 
t. 64. figg. 1, 1a, b°. 
Obovate, minutely lamellose-striate, brown, with darker spots. 
Long. 10, alt. 7, diam. 5 millim. Vertices in 2 long. 
Hab. Yucatan, in marshes (Morelet 1). 
Fischer and Crosse® changed Morelet’s name because there was another Cyclas 
maculata (i. Anton, 1839), which belongs to the same subdivision of the genus; but, 
as this latter is regarded by most authors as a synonym of the older Cyclas bahiensis, 
Spix, Test. Fluv. Brasil. 1827, p. 32, I think Morelet’s name of the species can be 
maintained until the distinctness of Anton’s is proved. 
2. Hupera meridionalis. 
Spherium meridionale, Prime, Proc. Acad. Phil. 1861, p. 416"; Monogr. Am. Corbiculade, p. 55, 
fig. 54°. 
Limosina meridionalis, Clessin, in Martini & Chemnitz, Syst. Conch.-Cab. ed. 2, Cycladeen, p. 249, 
t. 46. fig. 11°. 
‘Compared with the preceding (S. maculatum) it is larger, its posterior margin is less abrupt, and its lateral 
teeth are larger.” (Prime’.) 
Hab. S. Panama: Panama (Prime }-*). 
3. Eupera pittieri, sp.n. (Tab. XLIII. figg. 4, 4 a, 6.) 
Testa oblongo-obovata, sat compressa, non nitida, sulcis concentricis subdistantibus sculpta, flavido-fusca, non 
maculata, vertice rufescente, antice late rotundata, postice rotundato-subtruncata, margine dorsali postico 
primum ascendente, dein valde descendente, margine ventrali paulum arcuato; facies interna pallide 
violacea, margine cardinali anteriore ante vertices declivi, pone vertices subrecto, dentibus cardinalibus 
minimis, lateralibus sat validis. 
Long. 4°6, alt. 3-4, diam. 2 millim. Vertices in 3 long. 
Hab. S.W. Costa Rica: Sierpe, in swamps, on aquatic plants, at an elevation of 
5 metres above the sea (Pittier, April 1892). 
BIOL. CENTR.-AMER., Terr. and Fluviat. Mollusca, October 1900. "70 
