190 TRUNCATELLA. 
Rissoa truncata Phil. Moll. Sicil. I. p. 151. 
f. Costis indistinetis. 
y Laevigata, testa glaberrima, nitida 
Cyclostoma truncatulum y Drap. Hist. p. 40. t, 1. f. 31. 
Truncatella laevigata Risso Hist. Eur. mérid. IV. p. 125. n. 300. t. 4. 
f. 53. 
— — AMenke Synops. Ed. sec. p. 44. 
— — Villa Disp. syst. p. 29. 
Rissoa hyalina Desmar. test. Villa. 
9. Major, sursum conspicue attenuata, saturate succinea vel rubra, apertura 
latiore, peristomate callo obtuso carinaeformi distante munito. 
Truncatella Hammerschmidti Charp. mss. 
-— truncatula var. Küst. Mon. p. 11. t. 2. f. 16—18. 
B. Forma imperfecta, testa turrita, non truncata, apice acuta, anfr. 8, pe- 
rist. simplice; long. 5!/,, diam. anfr. penult. 1?/; mill. (Küst. Mon. 
t. 1. f. 10—18.) 
Fidelis Theresa Risso Hist. IV. p. 121. t. 5. f. 59. 
Paludina Desnoyersi Payr. Cat. p. 116. n. 245. t. 5. f. 21. 22. 
— strigilata Parr. teste Phil. 
Tuncatella exilis Menke Syn. Ed. sec. p. 44? *) 
Rissoa Desnoyersi Philippi Enum. moll. Sicil. I. p. 151. 
Habitat in omnibus littoribus maris mediterranei, Hispania, 
Gallia, Istria, Italia, Graecia, nee non in Britannia. 
229 11. Tr. Wontagui Lowe. 
T. subrimata, cylindracea, tenuis, laevigata, nitida, pellu- 
cida, pallide succinea vel hyalina; sutura leviter impressa; 
anfr. superst. 3 — 4 planiusculi, elongati, ultimus basi rotun- 
datus; apertura verticalis, oblongo ovalis; perist. simplex, 
tenue, margine dextro vix expansiusculo, columellari recedente, 
adnato. — Long.4, diam. vix 1!/; mill. Ap. 1!/, mill. longa. 
(Coll. Nr. 11.) 
A. Forma adulta: 
Turbo truncatus Montagu Test. Brit. p. 300. t. 10. f. 7. 
— — Turt. Dict. n. 65. 
Truncatula truncata. Leach Catal. ined.? 
Turritella truncata. Flem. Brit. anim. p. 103. n. 219. 
Truncatella Montagui Lome in Zool. Journ. V. p. 303. **) 

*) Synon.: Paludina Desnoyersi Payr.?  Auricula striata Martens 
(Menke). 
**) Trunc. testa tenui angusta, lineari, spira obtusissima apice abrupta 
quasi truncata; sutura distinctissima, valde coarctata. Long. 1?/;, lat, ?/, 
lin. Anfr. 4!/;. — Hab. in littore Britannico. (Lowe l. c.) 
