MELAMPUS $. 6. 45 
Conovulus maurus. Mühlf. mss. 
— — . nion Vevz, p. 48. n. 1778. 
Pythia maurus nton in sched, 
Melampus pyriformis H. et 4. A4dams in Proc, Zool. Soc. 1854. p. 10. 
X. 
— maurus (Tralia) H. et 4. Adams ibid. p. 11. n. 23.? 
-— piviformis Pfr. Syn. Auric. n. 40. 
— — H. et 4. Adams Gen. rec. Moll. II. p. 243. 
Habitat in ins. Tumaco Columbiae occidentalis (H. Cuming). 
41. NE. hidemntatus Say. 
T. imperforata, elliptico-ovata, tenuiuscula, longitudinaliter 
irregulariter rugulata, griseo-cornea, plerumque subcorrosa; 
spira brevis, conoidea, obtusula; sutura obliterata; anfr. 6 — 
convexiusculi, angusti, ultimus 3/, longitudinis aequans, prope 
suturam subangulatus, medio ventrosus, basi attenuatus ; aper- 
tura subverticalis, angusta, oblongo-acuminata, dentibus 2 al- 
bis coarctata: altero parietali, compresso, intrante, altero colu- 
mellari, torto, arcuatim ad labrum descendente; perist. simplex, 
margine dextro vix arcuato, acuto, intus inermi vel callum 
longitudinalem, plicas transversas 2—3 magis minusve distinc- 
tas immittentem gerente, columellari brevi, calloso, adnato. — 
Long. 12, diam. max. 7 mill Ap. 9 mill longa, 2!/, lata. 
(Coll. Nr. 23.) 
Melampus bidentaius Say in Philad. Journ. Il. (1821.) p. 245. 
— — H. et A4, I ddams in Proe. Zool. Soc. 1854, p. 10. 
n. 6. Gen. rec. Moll. Il, p. 243. 
— — Pfr. Syn. Auric. n. 41. 
— corneus Beck Ind. p. 107. n. 12, 
-— — . Biimps. Shells of New-Engl. p. 51. 
— linceatus Beck nd. p. 107 n. 7. 
Auricula cornea. Desh. in Encycl. méth. Il. p. 90. n. 9. *) 
— — . Desh. in Lam, hist. VIII, p. 339, n. 28. 
— bidentata Gould Report Massach. p. 197. f. 130. **) 
— — De Kay Zool. of New-York, Moll. p. 57. t. 5. f. 92. 
— — Kuüst, Auric. p. 41. t. 6. £. 7—11. ***) 

*) A, testa ovato-coniformi, translucida, transversim substriata, cornéo 
grisea; spira brevi, obtusa, saepe erosa; apertura angusta, elongata; colu 
mella biplicata, basi alba; labro tenui, acuto. Long. 11, lat. 5 mill 

Desh. 1l. c.) 
**) Shell ovate- conical, grey or brownish horn-color; spire short 
and obtuse, aperture narrow, two folds on the pillar. — Length '!'/, ineh, 
breadth 3$/,, inch, divergence 68". (Gould l. e.) 
***) A. testa ovato-coniformi, striata, corneo-grisea, spira brevi, obtusa, 
4T 
