BY W. A. HASWELL, M.A., B.Sc. 195 



with a number of specimens from Tasmania, and perhaps came 

 from that colony. It differs from A. Baffinii, Sabine, as figured by 

 Milne-Edwards, in the great length of the terminal segment 

 of the peduncle of the outer antennae — the fourth and fifth 

 segments being represented as sub-equal in the figure of that 

 species. 



Arcturus brevicornis, sp. nov., Plate IV., fig. 5. 



Head rather shorter than the first three segments of the thorax, 

 smooth ; first three segments of the thorax subequal, short, each 

 with one or two minute, rounded tubercles above ; fourth segment 

 much elongated, with a tubercle above — between the anterior end 

 and the middle. Abdomen as long as the last three segments of 

 the thorax. Outer antennae thick, about as long as the head and 

 first four segments of the thorax, second and third segments 

 subequal, fourth the longest, fifth longer than the second ; fourth 

 and fifth each with three or four short setae below ; flagellum 

 about two-thirds of the length of the last segment. Anterior 

 limbs subequal, slender, first slightly stouter than the rest. 

 Length of body about fths inch. 



Hah. Off Broughton Island, near Port Stephens, dredged in 

 about twenty-five fathoms. 



Explanation of Plates III. — IV. 



Plate III. 

 Fig. 1 . — Ciliccea hystrix X 3^. 

 ,, 2. — Female of the same (?)x H- 

 ,, 3 . — Ciliccea spinulosa. 

 , , 4 . — Ciliccea curtispina X 4 . 

 ,, 5. — Zuzara emarginata. 

 , , 6 . — Zuzara integra X 3 . 

 , , 7 . — Cymodocea trispinosa X 3£. 

 ,, 8. — Cymodocea tuberculataX.3^. 

 ,, 9. — Sphceroma acuticaudataXS?. 



