278 Proceediiiys. 



orders have been given to observe and collect rock specimens and 

 minerals, and carefully to note their localities and connections, so 

 far as may be practicable, in the progress of the trigonometrical 

 survey, so as to get together data for the preparation of a geoh)gical 

 map of the colony. 



A sample of New Zealand coal was presented from Mr. Lewis, of 

 Collins-street. 



A beautiful impression of Osteolepis frcin the Devonian Rocks, at 

 the Orkneys, north of Scotland, was presented by Henry D'Arch,Esq. 



Mr. Milligan placed on the table specimens (male and female) of 

 hrachyurous Crustaceans (Crabs), from D'Entrecasteaux Channel ; 

 one pair belonging to ihe Oxyrhynchi (of Milne Edwards), and the 

 other remarkable for the possession of ciliated antennse, with a rim 

 having a fine steel-blue tint ; specimens from a bed of Lignite, near 

 " Beckford's," on the Tamar Biver — of the soft argillaceous cliff 

 reposing upon it — and of ferruginised roots, &c. ;— also a section 

 (dressed and French-polished) of the stem of the graceful palm-like 

 Richea {Richea pandanifolia), found in the dense forests between 

 Lake St. Clair and Macquarie Harbour, where it attains the height 

 of 40 to 50 feet in sheltered positions, — the venation, markings, and 

 rich yellow colouring of which were much admired. 



A paper upon the bituminous coal which occurs on the Australian 

 coast, between Western Port and Wilson's Promontory, near Cape 

 Liptiap, by Mr. G. H. Wathen, was read. 



Mr. Dobson, of the High School of Hobart Town, submitted some 

 carefully-executed coloured drawings of an insect whose labours in 

 the formation of a small conical domicile or chrysalis on the leaf of 

 the while gum-tree, and its metamorphoses therein, have been 

 recently very closely observed by him in reference to the paper which 

 was read before the Society at last meeting, on the Laap or Lerp 

 found on the Eucalyptus Dunnosa over extensive tracts of country in 

 Australia Felix at certain times. 



A paper of Captain Collinson's, on New Zealand timbers, was 

 postponed on account of the lateness of the hour. The thanks of 

 the Society were voted for the numerous donations, and in a special 

 manner to Mr. Makeig for his masterly model. The meeting broke 

 up a little before ten o'clock. 



12th June. — Monthly evening meeting ; Fioberl Officer, Esq., 

 one of the Vice-Presidents, in the chair. 



