Scientific Notices of Books. 265 



Beitrag ziir Monographie der Gattung Crania. Von F. TV. 

 Hoeninghaus. Crefeld, 1828. 4/o, pp. 14. With one 

 plate. 



The present brochure is little more than an extract from the unpublished 

 portion of the extensive work undertaken by Dr. Goldfuss, the Petrefacta 

 Musei Universitatis Regite Borussicae Rhenanae Bonnensis, necnon Hoe- 

 ninghusiani Crefeldensis Iconibus et Descriptionibus illustrata. It fur- 

 nishes figures, characters, and descriptions of thirteen species of the genus 

 Crania, Retz., contained in the well-known cabinet of M. Hoeninghaus ; 

 ten of these being fossil, and the remaining three actually inhabiting our 

 present seas. The latter had been confounded together by previous 

 writers under the common iiame of Crania personata, and are now, for 

 the firs*^^ time, satisfactorily distinguished from each other. They are thus 

 characterized : — 1. Crania personata, Lam., Cran. valva inferiore ovato- 

 orbiculari postic^ retusa, cicatricibus posterioribus obliquis subreniformi- 

 bus, anterioribus in unam orbicularem confluentibus tuberculosis, rostello 

 nullo, disco palnfato-radiato, limbo antice incrassato. This species, the 

 one originally described by Retzias, is an inhabitant of the Indian Ocean. 

 2. Crania ringens, Cran. testa inferiore suborbiculari postice retusa, ci- 

 catricibus posterioribus subtriangularibus transversis, anterioribus in unam 

 transversalem confluentibus, rostello nullo, disco pedato, limbo anteriore 

 incrassato. It is the Crania personata, De Blainv., and the Anemia tur~ 

 binata, Poli, and inhabits the Mediterranean. 3. Crania rostrata^ 

 Cran. testa inferiore suborbiculari postice retusa, cicatricibus posteriori- 

 bus suborbiculatis, anterioribus in unam confluentibus, rostello acuto, 

 disco sinuato, limbo antice irregulari incrassato. The Crania personata, 

 Sowerby, the Anomia craniolaris, Chemn., and the Patella distorta, 

 Mont., are referred to this species, which inhabits the Mediterranean, and 

 also, it may be added, the British Seas. 



The figures, which occupy a large folding plate, afford good repre- 

 sentations of the inner surface of the lower valve of each of the thirteen 

 species described, of the natural size, and also considerably magnified, 

 so as to exhibit in a striking manner the variations in the form of the 

 Vol. IV. s 



