P.Y G. I. PLAYFAIR. 663 



Ehr. { = Eii. alreolafa Duj.). What Ehrenberg's form exactly is, 

 I have no means of knowing. Dujardin, however, shows, in his 

 figure, the criss-cross cement-marks forming diamond-shaped 

 lozenges. Tliese, running together ahnost to a point above and 

 below, indicate a test with oval plates close together, side by 

 side. In our forms, there is a minute dot in the focus of the 

 cement-marks, and, in broken specimens, this shows as a minute 

 bead of cement at the extreme end of the plate, giving the latter 

 very often a pointed appearance. Wailes, in Cash, I.e., iii., gives 

 a figure with widely separated scales, almost circular, though in 

 description he says "body-scales elliptical." Penard (under Fit. 

 hrachiata) gives broadly oval scales, widely separated, and with 

 a gap at top and bottom. Again the species gets the credit 

 (Wailes, I.e., p. 5) of being the most spinous form of its class but 

 our specimens are generally without spines, which, when present, 

 are nearly always weak or little developed. 



EuGLYPHA CRiSTATA Leidy. 

 Length o2-68, breadth 13-19, orif. 7J-lli//, spines up to 20// 

 long. 



Coogee(24); Botany (109); Lismore (185, 337); Byron Bay. 



Var. MAJOR Wailes. (PI. xl., f.7). 

 Length 74-84, breadth 21-23, orif. 13 J, spines up to 30/x long. 

 Coogee (14). 



Var. LANX'EOLATA, n.var. (PI. xl., f.8). 



Test lanceolate, slightly acuminate behind, not constricted at 

 all in front; sides almost straight, converging very slightly to 

 the orifice. Apical scales blunt, square-ended. 



Length 44, breadth 17, orif. 8 J//. 



Coogee (14). 



This form shows a probable connection between Eu. cristata 

 and Eu. Imvis. It has the shape of Eu. Icevis v. lanceolata; and 

 the blunt, square-ended, apical plates are also found in forms of 

 Eu. Icevis. 



EuGLYPHA FILIFERA V. ELEGANS, n.var. (PL xl, f.9). 



Test slender, elUptic rather than ovate, with a slight tendency 



