74 THE NAUTILUS. 



A day was spent in the famous Quohog Bay. I dredged the whole 

 length of the bay and found it absolutely barren, except a very inter- 

 esting colony at the head of the bay. The species found there were : 

 Ensis directus, Callocurdia morrhuana, Macoma calearia, M. bal- 

 thica, Toldia limatula (the largest I have ever seen), Venus merce- 

 naria, Mysella planulata, Gemma gemma, Tellina tenera, Retusa 

 pertenuis, Crepidula convexa, Haminea soUtaria, Astyris lunata, 

 Odostomia irijida, bisuturalis, winkleyi and gibbosa. 



A trip to the biological laboratory at South Harpswell enabled me 

 to rob the cemetery in the next lot, result equal: Vitrina limpida, 

 Cochltcopa lubrica, Pupilla muscorum, Vallonia excentrica and Pyra- 

 midella cronkhitei var. anthonyi. 



The famous Brown Cow Island was visited. Helix horte?isis 

 banded and plain was there, but not so abundant as sixteen years 

 ago. I also obtained a few of the beautiful wine-colored Polygyra 

 albolabris, together with Succinea ovalis, Pyramidula alternata, Vitrea 

 hammonis, Vitrina limpida, Pyramidula cronkhitei anthonyi^ Helico- 

 discus parallelus and Cochlicopa lubrica. 



On the wliole a very satisfactory summer, with several species 

 added to the marine list. 



ON A COLLECTION OF MARINE GASTROPODA FROM ADEN WITH 

 DESCRIPTIONS OF NEW FORMS. 



BY MAXWELL SMITH. 



(Read before the Brooklyn Conchological Club Jan. 29, 1912). 



The collection which forms the subject of this paper is a portion of a 

 series collected by Mrs. Blair, the wife ot a Governor of Aden. The 

 greater portion of this interesting collection is housed in the Royal 

 Scottish Museum ot Edinburgh. During the summer of 1910 Mr. 

 Eagle Clarke, the Curator of the Department of Mollusca, placed in 

 my hands a number of shells selected from the Blair collection. 

 Upon reaching London I compared many of the species with the 

 types in the British Museum and also examined the collections 

 made by Messrs Yerbury and Baynham which are preserved in the 

 same institution. 



A brief rdsuni^ of the work that has already been done at Aden 



