Marine Zoology. 187 



examples of the marine fauna of this part of the coast. A great 

 extent of reefs was exposed at low spring tides, exhibiting Corals 

 of the groups Astrcea, Meandrina, Porites, Tubipora, Orbicella, 

 and Caryophyllia, besides a profusion of soft Alcyonarian Polyps. 

 Holothurians were abundant, as were also some large Tubicolous 

 Annelids, with very long gelatinous thread-like tentacles. We 

 also got a few Poly noes, and several other annelids of the family 

 Amphinomidce. A Squilla, with variegated greenish markings on 

 the test, made itself remarkable by the vigour with which it 

 resented one's attempts, for the most part unintentional, to invade 

 the privacy of its retreat. An active black Goniograpsus was a 

 common object on the reefs, and the widely distributed Grapsus 

 variegatus was also met with. Haswell obtained from the interior 

 of the large Pinna shells examples of a curious small lobster-like 

 crustacean, which is of parasitic — or perhaps rather commensal — 

 habit, like Pi?motheres. Not uncommon in the rock pools was a 

 bivalve shell of the genus Lima, which on being disturbed swims 

 about in a most lively manner by flapping its elongated valves, 

 exhibiting at the same time a scarlet mantle fringed with a row 

 of long prehensile tentacles. Shells of the genera Area, Tridacna, 

 and Hippopus were common, and three or four species of Cyproea 

 were seen. 



We dredged several times with one of the steam cutters in 

 depths varying from twelve to twenty fathoms, obtaining several 

 species of Comatulas, two or three Asterophytons, Starfishes, 

 Ophiurids, Echini of the genera Salmacis and Goniocidaris, small 

 Holothurians, many species of Annelids, two or three Sponges, 

 a great variety of handsome Gorgoniae, Hydroids of the group 

 Sertularia and Plumnlaria, Polyzoa of the genera Eschar a, Retepora, 

 Myriozoum, Cellepora, Biftustra, Salicornaria, Crisia, Scrupocellaria, 

 Amathea, etc., and Crustaceans of the genera Myra, Hiastemis, 

 Lambris, Alphens, Huenia, and many others. Among the Annelids 

 was one with long glassy opalescent bristles surrounding the oral 

 aperture, and projecting forwards to a distance of one and a half 



