196 



Miscellanies. 



Engineer. — The shells named in the following list have, with great 

 liberality, been presented to the cabinet of Yale College, by Mr. 

 Bourne. They embrace a full series of all the shells yet discovered 

 in the neighborhood of Chillicothe. They are uncommonly perfect ; 

 the beaks of many species, which have always been remarked as much 

 worn and abraded, are in the specimens of this collection quite cov- 

 ered with the epidermis. 



There are commonly from four to twelve individuals of each spe- 

 cies, embracing all the varieties and discrepancies which arise from 

 age, and from still or rapid water, smooth or stony bottom, and par- 

 ticularly that curious structural diiference of sex first pointed out in 

 Vol. XXVI, p. 117, of this Journal, by Dr. J. P. Kirtland, and now 

 further illustrated by the same author in the present number, p. 164. 

 This local collection contains two orders, fourteen genera, ninety four 

 species, and three hundred and ninety five specimens. We give the 

 list of Mr. Bourne without alteration or annexing the authorities for 

 the specific names he has subjoined, as follows : 



Unio alatus. 



" gibbosiis. 



" parvus. 



" lapillus. 



" calceolus. 



" compressus. 



'• zigzag. 



" planus. 



" coccineus. 



" plicatus. 



" torsus. 



" declivis. 



" metanever. 



'' Icevissimus. 



" pyramidatus. 



" cuncatus. 



" undatus. 



" lachrymosus. 



" securis. 



" abruptus. 



" ellipsis. 



" irroratus. 



" cornutus. 



" ventricosus. 



" rubiginosus. 



" turbucuiatus, 



" cylindricus. 



" circulus. 



" iris. 



" triangularis. 



" OYatus. 



Unio oriens. 

 " occidens. 

 " politus. 

 " pustulatus. 

 " phaseolus. 

 " scaleniug. 

 " rectus. 

 " perplexus. 

 " ekgans. 

 " gracilis, 

 " multiradiatus. 

 " siliquoideus. 

 Alasmodonta rugosa. 



" ccmplanata. 



" edentula. 



" truncata. 



Anodonta plana. 



" incerta. 



" Ferussaciana. 



" aerolatus. 



" Wardiana. 

 Cyclas parturaia. 



" dubia. 

 Helix patcrna. 

 " pcrspectiva. 

 " paliata. 

 " clausa. 

 " hirsuta. 

 " arboreus. 

 " elcvata. 

 " solitari'a. 



Helix profunda. 



" alternata. 



" fuliginosus. 



" albolabris. 



" thyroidea. 



" multilineata. 



" zaleta. 



" tridentata. 



" inflecta, 



" concava. 



" Pennsylvanica. 

 Melania depigis. 



" Sayii. 



" Virginica. 



" canaliculata. 



" semicarniata. 



Lymnea umbrosa. 



" reflexa. 



" decidiosa. 



Planorbis bicarinata. 



" amigeris. 



" trivalvis. 



Physa elliptica. 



" heierostropha. 



" aurea. 

 Paludina decisa. 

 Pupa cxigua. 



" corticaria. 

 Succinea obliqua. . 

 Cyclostoma lapidiana. 

 Ancylus rivularis. 



