Natural History Investigations in Florida Waters. 269 



SKrclnca campestris, (Say). This shell occurs abundantly in low 

 places clinging to coarse grass. At first, I mistook it for Bulimus on 

 account of its form and the numerous brownish stripes, a peculiarity 

 that I have not noticed elsewhere. Ccrifhidea scalariformis, (Say). 

 Abundant on salt marshes subject to inundation. From small man- 

 grove sprouts, I have taken hundreds in a short time. 



Tnnicatella suhnjlindracca, (Gray). I only found occasionally, in 

 company with T. hilahiata, (Pfr.,) under leaves and logs. Of the 

 latter species there are millions. IMix cereohis, (Muhf.,) grow to a 

 large size and may be classed with H. septemvolva, (Say). My friend, 

 Mr. Binney, to whom I have forwarded a number of live species, says 

 he finds no difference in the animals, of the two mentioned above. 

 n. carpentercana, (Bl.,) so called, need study. They are abundant 

 on Key West. The OrthaUcus, known as undaim and zebra, were 

 formerly more plentiful here, than at present, I find a marked diff'er- 

 ence between these and the specimens collected by me further north ^ 

 notably, on Sandy Key and Cape Sable. One seems to resemble a 

 Central American species. In regard to a number of mollusks found 

 by me among the Keys, those who are interested in the study will be 

 glad to know that I was successful in transferring safely home nearly 

 one hundred species, in alcohol, as well as some alive. The land mol- 

 lusks, or rather, a portion of them -are now in the hands of "W. G. 

 Binney. And from recent letters, I am assured that the results, soon 

 to be published, are most interesting. CylindreUa Poci/ana, (D. Orb.,) 

 This elegant species resembles C. jejuna, (Gould), very numerous in 

 gardens around Key West. In the same localities I found now and 

 then a few Glandinas, which I am assured on good authority, are new 

 species. However, I am not disposed to take the ipsi dixit of any 

 man until the matter has been fully investigated by the best scientists 

 in the country. The foregoing species and those noted in the April 

 Quarterly were suflacient to render my stay at Key West very agree- 

 able. But in addition, I obtained some fine marine specimens from the 

 Harbor, such as Echinaster spinosns, Holofhuria nohilis, Marginella 

 carnea, etc. The pipe coral, or Manicina areolata, (Ehr.,) and As- 

 trea cavernosa, are also abundant from Tortugas to Cape Sable, to say 

 nothing of the other species common to Florida waters. The whole 

 coast presents a series of keys raised by the coral insect from the 

 depths of the ocean, and enlarged by drift and accretions to their 

 present dimensions. The mangrove has largely completed the work 

 begun by its peculiar growth. The fruitlets of the tree may be found 

 floating all over the gulf, and at first, I mistook them for cigars, which 

 they resemble in size and shape, one end being heavier than the other, 



