102 THE NAUTILUS. 



operated from a roomy, flat-bottomed skiff propelled by oars, and I 

 do most of my work alone, (luring (lie early morning hours while the 

 water is quiet. The dredgings are carefully worked over while rest- 

 ing between '• pulls," ami when I am ready to return home the re- 

 sults of my day's work are, so to speak, "all in a nutshell." 



In from "2 to 5 fathoms on mud bottom I find Marginella pyrifor- 

 mis, Marginella regularis, Myurell a simplex, Drillia hemphilli, Eulima 

 micam, Eulima rutila, Thracia curta, Mactra californica (young), 

 Ollirrlht boetica, Angulus modestus, A ngulus variegatus, Angulus ob- 

 tusus, Dentalium neohexagonum, Lyonsia californica, Mangelia angu- 

 lata and Cadulus nitentior. 



As we go toward the channel the depth increases and the bottom 

 is a mixture of sand and mud. Here in from 5 to 8 fathoms we find 

 Yoldia cooperi (young) and Leda taphira. 



The channel proper ranges from 8 to 14 fathoms and the bottom 

 generally consists of coarse, yellow sand and decomposed and broken 

 shells, among which we find both live and dead specimens of Semele 

 pulchra, Gorbula htteola, /sap's fenestrata, Isapis obtusa, Caecum cali- 

 fornicum, Caecum crebricostatum , Scala hindsii and Aesopus chrys- 

 alloideus. 



Scattered among the above species, we find many stray specimens 

 of such shells as Xassa perpinguis, Xnssa cooperi, Nassa rnendica, 

 Nassfi tegula, (Jalliostoma tricolor, Calliostoma gemmulatum, Callios- 

 toma canaliculatum, and many other species which are generally found 

 upon the low fiats at low tides and which are scarcely worth mention- 

 ing as dredge species. I find that for dredging in shallow waters a 

 dredge made of galvanized iron without any net but having a screen 

 bottom produces as good results as any, and is much more easily 

 manipulated. 



A LIST OF SHELLS FROM NORTHEASTERN MAINE. 



I!V OLOF o. NYLANDER, CARIBOU, MAINE. 



The following is a list of land ami fresh water shells collected in 

 the northeastern part of Maine, principally along the Aroostook and 

 Fish Rivers. 



Valuable assistance lias been received from Prof. II. A. Pilsbry 

 and Mr. Bryant Walker. 



All the Pisidia, and nearly all the minute land shells have been 





