170 Dr. Maton's and Mr. Rackett's 



JO. HENR. COHAUSEN 



was the author of a "Conspectus Sciographicus Test actor um." There 

 cannot, however, be a more strange and unscientific arrangement 

 of shells than the one here proposed; nor can it answer the pur- 

 pose of any person to whom the descriptions of Pliny, Buonanni, 

 and Rumphius are familiar, to consult it. 



A considerable work on shells was published in the year 1755. 



The author, 



NICHOLAS GEVE, 



does not give any scientific names, nor is his description of much 

 use to a scientific reader; though there are some good references 

 in the notes. He employs both the German and the French lan- 

 guages, and is very diffuse. The plates are the most valuable 

 part of the work, being thirty-three in number, and containing 

 434 coloured figures, Avhich are in general correct. 



DR. WHYTT 



was author of a description of the ovary of the Buccinum ampul- 



latum. This description is accompanied by figures. 



Two memoirs on the subject of Testacea were laid before the 



French Academy by 



GUETTARD, 



well known . by various other interesting tracts on different 

 branches of natural history. The first of these memoirs is enti- 

 tled " Observations qui peuvent servir & former quelqucs Caracteres 

 de Coquillages." Fourteen genera are here described, founded on 

 the nature of the contained animals. The second memoir is " sur 

 le Rapport quil y a entre les Coraux et les Tuyaux Marins, et entre 

 ceux-ci et les Coquilles." To this are annexed five excellent plates 



of 



