NO. 1-152. NOTES OX PYliAMlDKLLID.E—DALL AND BARTSCII. 365 



revolute, provided with a prominent lamellar fold at its insertion; 

 parietal wall covered by a thin callus. 



The type helong-s to the Ptetel collection and is from Japan. It 

 has six post-nuclear whorls and measures: Long-., 3.6 nun.; diam., 

 1.5 mm. It was la))eled ..ly/^^/Z/'/.s- j>rllucid<i \. Adams. This appears 

 to ))e a iioiiit')) iiudtni)^ as the only reference" to that we have been able 

 to tind gives the following statement: Aiiiaihls jx'lJuctda A. Adams = 

 Mox'xflio pelluclda A. Adams.* It is very proba))l(> that the part of 

 the manuscript relating to the species was omitted. It is not Vo]iif<( 

 (= Ododoinld) j>elluc!d(i Dillwyn.'' 



A badly worn shell, perhaps an Odof<toinia s. s., very elongate and 

 umbilicate, bears the name Amuthtfi eonciniia A. Adams, and comes 

 from flapan. Ai/xd/us concinna appears to be a nomen nudmn for the 

 reasons t-ited imder Odostom !a ( (Jdostovt la) Ihnplda. 



ODOSTOMIA (HEIDA) PANAMENSIS Clessin. 



riate XXVI, %. 4. 



Ododomia panamensis Clessin, Mart. C'liein. Conch. Cab., 2(1 ed., Pyramid. 1900, 

 p. 120; })1. XXVIII, fig. 9. 



Shell small, heavy, elongate-ovate, whorls increasing regularly in 

 size, milk white, shining. Nuclear whorls small, almost completel}- 

 obliquel}' immersed in the tirst of the succeeding volutions. Post- 

 nuclear whorls moderately and evenly rounded, of porcellanous tex- 

 ture, withoutany apparent marking, separated by well marked sutures. 

 Periphery of the last whorl full and rounded. Base inflated, well 

 rounded. Aperture small, decidedly rissoid, almost channeled ante- 

 riorlv, posterior angle acute; outer lip decidedlv curved backward 

 anteriorly, very thick within but beveled to form a sharp edge; colu- 

 mella extremely short, somewhat reflected and connected posteriorly 

 with the very strong parietal callus, which is fully as thick as the 

 edge of the outer lip and connects with it at the posterior angle of 

 the aperture, thus forming a complete peristome. A prominent 

 oblique fold is present on and a little anterior to the insertion of the 

 columella. 



There are two specimens of this species in the Berlin collection from 

 Panama. We have considered the best preserved individuals, which 

 evidently served Clessin for his description and tig-ure as his type, and 

 have here rediagnosed and figured it. It has six post-nuclear whorls 

 and measures: Long., 3.1 mm.; diam., 1.5 mm. 



Clessin for some unaccounta])le reason changed the characters of the 

 aperture in the above-cited figure to harmonize with the t3q:)ical 

 Odosfoiiud. aperture. He seems to have failed entirely in recognizing 



the peculiarities of the present species. 



• 



«Ann, Mag. Nat. Hist., VIII, 1861, p. 304. &Ann. Mag. Nat. Hist, 1860. 



cCat. I, 1817, p. 508. 



