EUCALODIUM. 265 
19. Eucalodium recticosta. 
Cylindrella recticosta, Pfr. in Philippi’s Abbild. neuer Conch. ii. p-. 48, t. 2. fig. 3 (1847)'; 
Monogr. Helic. Vivent. ii. p. 83697; in Martini & Chemnitz, Syst. Conch.-Cab. ed. 2, 
Cylindrella, p. 8, t. 1. figg. 21, 22°; Sowerby, in Reeve’s Conch. Icon. xx., Cylindrella, t. 13. 
fig. 1194, 
Eucalodium recticosta, Fisch. & Crosse, Miss. Scient. Mex., Mollusca, i. p. 386, t. 14. figg. 12, 
12a, b°. 
Hab. W. Mexico: Culata, near Manzanillo, in the State of Colima (W. Lloyd). 
S.E. Mexico (Ghiesbreght ®). 
S. Centrat Mexico: Oaxaca ‘4. 
Pfeiffer describes the aperture as “ oblique ovalis,” and gives its length as 94, and the 
breadth 74 millim., and this agrees with his figure!; but the shell as figured is 
‘somewhat turned to the left, so that the real breadth is foreshortened. In a specimen 
from Paetel’s collection, agreeing in all other respects with Pfeiffer’s description, the 
aperture is circular, as broad as long, and it is also so described and figured by Fischer 
and Crosse 5. 
20. Hucalodium strebeli. (Tab. XVI. figg. 31-34.) 
Anisospira strebeli, Pfeffer, Verh. Ver. f. naturw. Hamb. 1887, p. 21°. 
Testa fusiformis, plus minusve tumida, costulis planis paulum obliquis vix arcuatis sat confertis sculpta, opaca, 
fulvido-rubella ; sutura instricta, angustissime alba ; anfr. superstites 8-9, convexiusculi, supremi rapide 
attenuati, 4-5 sequentes diametro subsequales, penultimus jam angustior, ultimus magis angustatus, 
versus basin sensim attenuatus, carina basali obsoleta usque ad aperturam continua (interdum fusco- 
unifasciata) ; apertura paulo ultra suturam producta, ovato-rotundata, supra extrorsum obtusangula, ad 
insertionem subrectilinea; peristoma crassum, breviter expansum, plica columellari profunda, valde 
ascendente, non angulata. 
a. Long. 50, diam. 15; apert. long. 113, diam. 10 millim. 
b. 29 43, ” 14 5 ” 11, ” 10 ” 
C. » 40, 4, 12; 9 10, ” 9 ” 
Oe ” 38, ” 13 5 ” 10, ” 9 ” 
C. ” 33, ” 12; ” 9, ” 83 ” 
Hab. S.W. Mexico: Cerro de Plumas, near Puerto Angel, on the Pacific coast, in the 
State of Oaxaca, in a dense tropical forest ({Hége). 
ery variable. The five specimens, the dimensions of which are given above, are 
ccd out from about thirty, among which we find all degrees of transition, so that not 
even varieties can be determined. The larger and most cylindrical ones, as a and ¢, 
resemble in general shape the club-like turreted J. ghiesbreghti and LF. decollatum, 
except that the uppermost of the remaining whorls are much narrower ; the shortest 
and most swollen one, é, is very like E. liebmanni, but differs from it in the costulate 
sculpture. The most rapid diminution in diameter is seen in the sixth, seventh, or 
eighth whorl, numbered from below. Three, four, or even nearly five whorls are of 
almost equal diameter before the penultimate one. The aperture in same specimens is 
BIOL. CENTR.-AMER., Terr. and Fluviat. Mollusca, November 1897. 34 
