16 THE FISHERIES OF THE ADRIATIC, 



Cystoseira, shining like smooth yellow leather whilst immersed, but changing 

 to dark green when exposed to the air ; it is peculiarly characteristic of depths 

 of 5 to 6 fathoms. The Spongia Qtia7 r nerensis is also found adhering to the 

 tangles. 



Here abound the Crustacean Galathea squamifera and the univalves Aplysia 

 depilans, Buccinum ascanias, Cerithium vulg. var.gracile, and most characteristic 

 of all are the Annellides Lumbriconereis quadristriata of Grube. In shallow 

 waters on bare rock, or shingle, appear the bivalve Pinna squamosa, the 

 Ascidians Cynthia microcosmus and C. papulosa, a large species in form some- 

 what like the common species, but of extreme beauty from the effect of its 

 colour ; its tough skin is thickly overset with disks of the brightest scarlet ; 

 it is known here by the name of Limone di Mar, or sea-lemon. 



The Polyp Actinia bellis here attains its maximum development, the 

 sea-urchin Echinus brevispinosus also appears, and amongst the rocks is 

 found the common lobster, Homarus marinus. 



On clean sand is found the elegant crab, Gonoplax rhomboides, also the 

 bivalve Cytherea chione, and the Echinoderm Astropecten aztrantiacus, which, 

 however, only attains to its maximum of development in the next region. 

 On clean clay beds appear Venus verrticosa, Modiola barbata, Cardium 

 exigtmm, different species of Pectines (P. sulcatus, P. jacobceus, P. poly- 

 mor pints), and Echinus microtuberculatus. 



The oyster, Ostrea cdulis var. cristata, is rarely found in the Ouarnero, 

 but otherwise abounds in this region, chiefly at Val Cassione, on the island 

 of Veglia. 



Black clay supports a number of Foraminifers, such as Miliola obesa, 

 Rosalina varians, and Acervulina inhcsrens. 



The Zostera fields swarm with animal life, the most characteristic of 

 this region ; most prevalent amongst these are Sicyonia sculpta, Palccmon 

 rectirostris, Leucotoe denticulata, and Ilia nucleus; also the Annellides 

 Serpula echinata, and Aspidosiphon Million. 



Forms found in the littoral zones, such as Idothea appendiculata, 

 Lysianassa spinicornis, Trochus pyramidatus, here attain their maximum of 

 development. 



