OF KACHH AND KATTYWAE. 27 



5. EcHiNOLAMPAS Haimei, Dimcan 8f Sladen. Plate II, Eigs. 6, 7, 8. 



The test is depressed, longer than broad and broader than high, rather conical 

 above, with the sides sloping without much curvature to the tumid margin, which has 

 an oval elliptical actinal outline, the greatest breadth and boldest curve being posterior 

 to the peristome. Eelative length to breadth 1 : 0-87 to height 1 : 0-42. The apical 

 system is slightly anterior, and is at the highest point of the conical part of the test, 

 and the posterior slope is bolder than the anterior. The generative pores are large 

 and oblique. 



The ambulacra are flush with the test, are unequal, do not reach the margin, are 

 petaloid more or less, but the anterior shows but little tendency to close as the others 

 do. The postero-lateral are the longest and the broadest, whilst the odd ambulacrum 

 and the antero-lateral are about the same length, the latter being the broader. The 

 interporiferous zones are broad, more than twice as broad as a poriferous area. The 

 anterior poriferous zone of the antero-lateral ambulacrum is shorter than the posterior, 

 towards which its end curves. The zones of the other ambulacra are equal in length. 



The outer row of pores is larger than the inner. The actinal surface is slightly 

 tumid ; and the peristome, which is small, slightly excentric in front, is rather sunken. 

 It is pentagonal, and the bourrelets are feebly developed and are very flat ; the anterior 

 nearly equal the posterior one, and the postero-lateral are the narrowest. The sides of 

 the peristome are very precipitous, and are ornamented with small close tubercles. The 

 phyllodes are moderately developed ; there are two pores within the peristome on 

 each, and beyond them is some doubling of pores ; those of the normal single row are 

 placed at the junction of sutures near the peristome, but further out they appear to 

 penetrate the ambulacral plates ; but this is produced by wearing and the obliquity of 

 the canal. There is one plate to each interradium at the peristome. 



Length of test 54 millim. when perfect, breadth 47 millim., height 23 millim, 



Locality. Kachh. Nummulitic series, and west of Junagia, north of lera. Survey- 

 number C 060 A f. 



Illustrations of the Species in Plate II. 



Fig. 6. The abactinal part of the test : natural size. 



7. The actinal surface : natural size, 



8. A part of a phyllode : magnified. 



6. EcHiNOLAMPAS Damesi, Duncan ^ Sladen. Plate II, Figs. 9, 10 ; and Plate III, 



Fig. 1. 



The test is rather depressed, slightly longer than broad, and the height is less 

 than half the length ; it is subhemispherical above and broadest behind. The relative 

 dimensions are — length to breadth 1 : 0*92, and length to height 1 : 0-42. 



In marginal outline the test is subcircular, and is broadest just behind the median 

 lines of the postero-lateral interradia, where there is a slight projection at the margin. 

 The front of the marginal outline is rounded, and behind the point of greatest breadth 



