NOTES. 53 



developed, underneath the long primary spines of the adult. 

 In one specimen 14 young were found, about a line in length, 

 sheltered round the genital pores under the primary spines, 

 which were laid down and closely compressed against the test 

 and not easily movable, as in other individuals without young. 



LOVENIA ELONGATA. 



A rare species in Port Jackson ; denuded tests are sometimes 

 found thrown up during heavy gales on the Coast ; it appears to 

 be less rare on the South Coast. 



BKEYNIA AUSTRALASIA. 



Very plentiful at Lord Howe's Island, where they are found 

 burrowing to a depth of 5 or 6 inches in the sand. It has 

 been seldom found in Port Jackson or on the adjacent Coast. 



ECHINOCARDIUM AUSTRALE. 



This Heart Urchin is fairly common in Port Jackson, being 

 found at various depths from a few feet to 10 and 12 fathoms, 

 also on the sea coast up to 35 fathoms. It is the only species I 

 have met with in water which at certain seasons of the year must 

 at least become brackish with the amount of fresh water which 

 during heavy rains pours into the heads of the creeks entering 

 Port Jackson. On more than one occasion, while dredging at 

 the head of Middle Harbour, we have obtained numerous 

 specimens, the dredge containing also Eucalyptus and Mellaleuca 

 leaves, chips of wood, &c., brought down by the stream after 

 heavy floods ; the heads of these creeks are always more or less 

 brackish, and fresh water fish abound in them on such occasions. 



HEMIASTER APICATUS. 



A rare species and only obtained en two or three occasions 

 during the last five years. It is sometimes found thrown up by 

 the sea on the outside beaches after gales, but seldom in good 

 condition. The Museum specimens were taken in 7 to 10 

 fathoms near the North Head of Port Jackson. 



BRISSUS CARINATUS. 



Although universally dispersed over the shores of Eastern and 

 Southern Australia, Brissus carinatus is by no means plentiful ; 

 in Port Jackson itself it is rare, found only on sandy flats covered 

 with G to 10 fathoms of water, a few dead tests may occasionally 

 be found after heavy gales on the coast beaches. 



