The Nautilus. 



Vol. XX. MAY, 1906. No. 1. 



SHELL-COLLECTING ON THE MOSQUITO COAST OF NICARAGUA— VI. 



BY W. H. FLUCK. 



Tellina (Eurytellina) angalosa Gmel. Abundant on the beach all 

 along the coast from Bluefields to Cape Gracias a Dios. The dead 

 shells found were almost always in perfect condition, not even the 

 hinge ligament injured. Live shells in the shallow water on quiet 

 days. This is the most highly colored bivalve on the cost. 



Tellina (Cycloteflina) fausta Donovan. Plentiful in the shallow 

 water about the Man of War Keys. 



Sanguinolaria (Psammotella) operculata Gmel. A common shell 

 on the sandy beaches of the Mosquito Coast. Walpa Siksa is a good 

 locality for it. This very beautiful shell is not as brilliant as T. 

 angulosa, but is larger. 



Sanguinolaria rosea Lam. This beautiful pink shell is by no means 

 numerous along the east coast of Nicaragua. I searched the beach 

 and shallow water almost daily for four years, but succeeded in find- 

 ing four specimens only. It inhabits deep water, possibly. It is 

 altogether too fragile to stand the pounding of the surf. 



Asaphis deflorata Linn. Abundant in the shallow sea and pools 

 at King's Keys and the other islands along the coast. It seems to be 

 variable in color, being pink, cream, blue, and white. 



Strigilla camaria L. Very abundant. I found two sizes ; large, 

 full-grown forms fairly plentiful, and young, brighter colored half- 

 sized specimens, in large quantities. They occurred thus so regu- 

 larly that I was persuaded they were two distinct S] I felt the 

 more certain of this since in the larger forms the ligament was in 



