DALL] NEW LAND-SHELLS FROM CENTRAL MEXICO 189 
pl. 27, fig. 37. It is bright pink and three millimeters long. There 
is apparently no secondary ureter, nor is there any groove along 
the intestine (G4). The intestine is of the usual four-folded type, 
and penetrates only a short distance behind the heart and kidney. 
Qu) RR ag 
22. 23 
Fic. 22.—Sketch of jaw of Hendersonia palmeri. 
Fic. 23.—Teeth of radula, showing (1) rhachidian, first three laterals, ninth 
lateral and outer lateral. 
Fic. 24.—Anatomical details; k, kidney; G. 4, intestine; p. v., pulmonary vein; 
d, lung. 
Fic. 25.—m, mantle; c. m., contractor muscle; h, heart; k, kidney; G. 3, unde- 
veloped genitalia; L, liver. All magnified; taken from drawings by Dr. H. A. 
Pilsbry. 
The very long liver and the ovotestis occupy the whole of the earlier 
whorls. 
“The genitalia were undeveloped and threadlike. There is a rather 
long atrium and an excessively long vagina. The penis was rep- 
resented by a minute budlike tubercle only, and was evidently not 
yet developed. Its retractor was not seen if present. 
“The jaw is very thin, arcuate with faint, well-spaced vertical striz, 
as in Holospira. The radula has teeth of the Holospira type. The 
rhachidian and six laterals are unicuspid, the cusps obtuse and as 
