84 MURDOCH : anatomy of ashmunella. 



It may perhaps not be out of place to add ihc measurements of 

 the palHal organs of a few other species : Heli.v siihaj'erfa, Ancey. 

 Kidney in length, twice its width, nearly twice the length of the peri- 

 cardium, and scarcely half the length of the lung. Helix (Otala) 

 eo7istantlnae, Forbes. Kidney in length, four times its width including 

 the ureter, and twice the length of pericardium. The rectal portion 

 of the ureter, in the form of a groove. HeUrelJa 'Xiccarensis, Kob. 

 Kidney in length, nearly four times its width, rather more than twice 

 the length of the pericardium, and about half the length of the lung. 

 H. (Trochula) zitoumica, L. and E. Kidney in length, nearly four 

 times its width, considerably less than twice the length of the peri- 

 cardium, and nearly half the length of the lung. The rectal portion 

 of the ureter, in the form of a groove. Leucochroa candidissima, 

 Drap. Kidney scarcely twice the length of the pericardium and con- 

 siderably less than half the length of the lung. Helix (Levantina) 

 liierosoJijma, Boiss. Kidney in length, nearly four times its width, 

 two and three quarter times the length of the pericardium, and less 

 than half the length of the lung. The rectal portion of the ureter in 

 the form of a groove. 



Note by C. F. Ancey. — Mr. Murdoch had no access to the paper 

 published by H. A. Pilsbry, under the title : " Note on the Anatomy 

 of the Helicoid genus Ashmunella," in the Proc. of the Ac. of 

 Natural Sciences, Philadelphia,- 1900, pp. 107 — 109. From this I ex- 

 tract the following data concerning Ashmunella thomsojiiana typical. 



. . . ."The single specimen secured extruded its penis in drowning, 

 and I found it impossible to retract it. It is notable that only the 

 lower and wider portion is everted, not the tapering upper part, which 

 is probably epiphallic. 



" The general proportions of the genitalia are as in van iwrterae, 

 the spermatheca being long, decidedly over half the length of the 

 penis -f- epiphallus, in both forms. The lower insertion of the penis 

 retractor muscle in var. j^orterae seems to be wanting in tlwvmmiajia. 



" The jaw is strongly arcuate with seven moderately strong, separ- 

 ated, distinct ribs. 



" Radula with 27-1 '27 teeth, similar to those of .4. Jiyjxirliy.-^m, the 

 tenth to the thirteenth transitional, outer ten margins, with the inner 

 cusps bifid." 



Pilsbry adds (p. 108): " 'J1ie tridentute forms ihomfoniana and 

 porteme differ from the others in the greater pr()[)orti()nate length of 

 the spermatheca." 



