22 THE FISHERIES OF THE ADRIATIC, 



Dr. Grube, 1 which, wrapped in 1-2 inch loam-sausages about the thickness of 

 a finger, cover the bed by the million, and are easily taken for mere lumps of 

 earth. On the same ground dwell Terebella crocca, T. pitstulosa, Sabella 

 brevibarbis, adhering to Ascidians, Dictyomeniae, or fragments of shells, also 

 swarms of Aphrodite liystrix, more rarely A. aculeata ; besides these are 

 found Clymenc digitata, Nereis Dumerilii, Linubriconereis unicornis, Sigaliou 

 tetragonum, Chcetopterus pergamentaceus, Protula protensa, and P. Rudolpliii, 

 one of the most magnificent of its genus, adorned by the most brilliant 

 colours (the Scrpula intcstinum of L.) ; P. protensa, though less brilliant - 

 in its colouring, is perhaps as beautiful, on account of the more tasteful and 

 delicate diffusion of its tints. 3 



The Mollusks Bullcea planciana, swarms of Aporrhais pes pelecani and 

 Turritella nngulina, more rarely T. triplicate/, ; Trochus granulatus ; here 

 and there Dolium galea, the largest snail of the Adriatic ; Cassidaria echino- 

 phora, Tapes gcographica, Cardium ciliare, Isocardia cor, Pectunculus pilosus, 

 a Boreal form, and Nucula sulcata, all abound here. Amongst the Echino- 

 derms Holothuria regalis is characteristic by their abundance ; Ophiolepis 

 ciliata are numerous, but Cladodactyla pentactes, which has a wide northern 

 extension, Cucumaria tcrgestina, Echinastcr scpositus, Asteriscus pahnipes, 

 Asteracanthion glacialis, Ophioderma longicauda, are scarce. 



The characteristic Polyps are Mammillifera univittata, Alcyonium 

 palmatnm in large quantities ; Pennatula phosphorca, or sea-pens, and 

 Cyathina striata on the shells of Turritella. 



The Sponges found here are Raspailia stelligera, Spongia adrialica, 

 Cacospongia scalaris, and Esperia Lorenzii. 



The Norway Lobster {Nephrops norvegicus), found in swarms locally 

 distributed over the deepest parts of the northern and central portion of the 

 Gulf of Ouarnero, must be considered a colony of an entirely foreign 

 form, as it is not met with in any other part of the Adriatic. In its 

 company appear, imbedded in and firmly adhering to the mud, Virgularia 



1 "Ein Ausflug," &c, by Dr. A. E. Grube, pp. 46, 62, 63, 65. Berlin : 1861. 



2 See Grube's work, " Ein Ausflug," &c, pp. 5 1, 63. 



