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 crocea, T. pustulosa, Sabella 

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

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

 found Clymene digitata, Nereis Dumerilii, Lumbriconereis unicornis, Sigalion 

 tetragonum, Chcetopterus pergamentaceus, Protula protensa, and P. R?idolphii, 

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

 colours (the Serpula intestinum 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. 2 



The Mollusks Bullcea planciana, swarms of Aporrhais pes pelecani and 

 Turritella ungulina, more rarely T. triplicata ; Trochus granulans ; here 

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

 phora, Tapes geographica, Cardium ciliare, Isocardia cor, Pectuncuhis pilosus, 

 a Boreal form, and Nuctila 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 tergestina, Echinaster sepositus, Asteriscus palmipes, 

 AsteracantJiion glacial is, Ophioderma longicauda, are scarce. 



The characteristic Polyps are Mammillifera tmivittata, Alcyoniuvi 

 palmahim in large quantities ; Pennatula phosphorea, or sea-pens, and 

 Cyathina striata on the shells of Turritella. 



The Sponges found here are Raspailia stelligera, Spongia adriatica, 

 Cacospongia scalaris, and Esperia Lorenzii. 



The Norway Lobster {Nepkrops 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. 51, 63. 



