102 THE NAUTILUS. 



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

 do most of my work alone, during the early morning hours while the 

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

 ing between " pulls," and 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 '1 to "> fathoms on mud bottom I find MargineUa pyrifor- 

 mis, MargineUa regularis, Myurella sniifth'.?, DriUia hempJiiUi, Eul!t<i 

 micans, Eulima rnfffct, Thradu c/t.rta, Mactra calif or nica (young), 

 Ollivcl/it J)octic(>, Anr/iilns modestus, Anyithis variegatus, A/<;/i>hrs ob- 

 tusns, Dentalium neohexagonum, Lyonsia c/t/ifor/ifca, Mangelia ////////- 

 lata and Oadulus nitctifim: 



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

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

 Yoldia coopei'i (young) and Led it /<//>///'/(/. 



Tl>e channel proper ranges from <S 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, Corbula luteofa, Isapis'fenestrata, /SU/H'S obtusa, Caecum cali- 

 fon/icitt/t, (^iiccnni crebricoslatum, Scula Iriiidsii and Acsopns chrys- 

 attoideus. 



Scattered among the above species, we find many stray specimens 

 of such shells as Ntissn /><'i-/>ni</nix, Nnxyn. cooperi, Nassa mendica, 

 Nassa tcyiiht, Ccittiostoma lri<-olnr, Calliostoma gemmulatum, CctUios- 

 toiiKt ciiiKtlii-iiliitiiin, and many other species which are generally found 

 upon the low flats 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. 



BY OI.OF O. NYLANDEI!, CAIIIBOU, MAINE. 



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

 the northeastern part of Maine, principally along the Aroostook and 

 Fish Rivers. 



Valuable assistance has been received from Prof. H. A. Pilsbry 

 and Mr. Bryant Walker. 



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



