54 Observations on the Terrestrial 



ACEPHALA. 

 Eupynea praelonga, Barnes. 

 " nasuta, Say. 

 Lampsilis cariosa, Say. 



" ventricosa, Barnes. 

 " siliquoidea, Barnes. 

 Metaptera alata, Say. 



" gracilis, Barnes. 



Complanaria rugosa, Barnes. 



" alasmodontina, Barnes. 



Anodonta Benedictensis, Lea. 

 " Housatonica, Lea. 

 " cylindracea, Lea. 



In a catalogue of the species of Corbicnladae contained in tlie 

 collection of Temple Prime, 1863, we find the following New 

 England species, which have not as yet been found in this State. 



SphaBPium phomboideum, Say. 



S. occidentale, Prime. 



S. Vepmontanum, Prime. 

 Pisidium feppugineum, Prime. 



P. ventpucosum, Prime. 



By the above list it will be seen that while there are only 

 fourteen species of gasteropods not found in Maine, there are 



