BY W. A. HASWELL, M.A., B.Sc. 191 



segment of the abdomen with two short triangular processes 

 projecting backwards from its posterior border, separated from 

 one another by an interval equal to a fifth of the breadth of the 

 segment ; on either side of this another, less prominent, tooth. 

 Last segment with two compressed, irregular elevations near its 

 proximal end, each formed by a cluster of five teeth ; rest of the 

 surface smooth. Lateral angles of the notch prominent, acute, 

 projecting beyond the extremity of the mesial lobe, which fills up 

 all the notch and is cemented to its borders except at the apex, 

 which is rounded. Outer ramus of the uropoda very broad, 

 spoon-shaped, closely fringed with hairs ; inner narrower and 

 shorter, but projecting a little beyond the angles of the notch. 

 Length about \ an inch. 



Hah. Port Stephens, five fathoms. 



Genus Sph^roma, Labr. 



Sphseroma ? acuticaudata, sp. nov., Plate III., fig. 9. 



Greatest breadth of body about two-thirds of the total length. 

 Head broader than long, bordered anteriorly and laterally by a 

 thickened margin which is continuous with the eye ; an obscure, 

 mesial, longitudinal carina on the anterior half and a number of 

 smooth, flattened tubercles. Surface of the thoracic segments 

 smooth, each bordered with short hairs ; first segment not so long 

 as the two following taken together ; lateral borders of thoracic 

 segments carinate ; the postero-lateral angles acute. Last segment 

 of the abdomen slightly dilated — an acute spine about its centre, 

 below which is a transverse band of short hairs ; a deep, rounded 

 median posterior notch, with prominent acute angles. Basal 

 joint of internal antennae much compressed, not much longer than 

 broad, separated from its fellow by a small rounded frontal lobe ; 

 second joint sub-triangular, more than half the length of the first ; 

 third about half the length of the second and slender ; flagellum 

 rather shorter than the peduncle. Outer antennse more than 

 half the length of the body ; terminal joint of the peduncle longer 



