54 



Pinnotheres ostreum sp.; found in oysters at several poinLs 

 on the coast. 



Panopciis herbstii; found on oyster reefs at several localiti'^? 

 on the coast. 



Arachnida — Limulus polyphemiis; abundant in shallow 

 water over sand fiats at the Chandeleur Islands. 



MOLLUSCA. 



Cephalopoda — Spmila australis; the shells of this form are 

 coKimon on the beach at Cameron, and at the Chandeleur Islands. 



Loligo her vis — This small squid is abundant in the water.^ 

 about Cameron, and is frequently used as food by fishermen. 



Gasteropoda — Neritina reclivata; abundant on the grassy 

 shoals at the Chandeleus Islands. 



Sigaretns perspecfivus; a single specimen of this form was 

 found at the Chandeleur Islands. 



Crepidula plana; this form lives attached inside the emply 

 shells of large gasteropods. 



CrepifJ-'ila convexa; found in large numbers attached to 

 stones and large shells at several points on the coast. 



Crepidula fornicata; common to the Chandeleur Islands at- 

 tached to living scallops. 



Solarium granulakim; a single specimen from the Chan- 

 deleur Islands. 



Littorina irrorata; live specimens taken from several sta- 

 tions at the Chandeleur Islands, empty shells common on the 

 beach at Cameron. 



Cerithium muscarium ; common at the Chandeleur Islands, 

 haying about the same range as Neritina. 



Cerithiopsis sp.; this small form was found only on a red 

 sponge living among the eel grass in shallow water at the Chan- 

 deleur Islands. 



Modulus modxdus. 



8 trombus pugulis: this beautifully colored shell was found 

 in abundance at the Chandeleur Islands, and a few worn speci- 

 mens are found occasionally on the beach at Cameron. 



Dolium galea; a few specimens of this form were taken nt 

 the Chandeleur Islands. 



