OF SOFTnEFX INDIA. 
13 
4. IIemiaster front-acutus, Stoliczka. PI. I, Figs. 7-8. 
n. testa rotundate snb-ovata, snb-ancjulata, antice sulcata, postice concaviuscida , 
svh-truncata, supra infraque sidj-<equaliter convexhisctila, amhitu anteriori panto 
depresso, snb-carinato ; ambulacris profundis, antcro-laterallbus multo longioribus, 
sub-Jlcxuosls, ad tcrminationcm fere clausis ; super ficle supra minute, ad peripdieriam 
infraque distinctius, granulata. 
A moclcvately depressed, angularly and rather roundly suh-ovate species, with 
the lower portion of the anterior periphery peculiarly angular, or almost sub-cari- 
nate, the cheeks being flattened ; the upper side is slightly more convex than the 
lower, and the posterior end narrowly truncated. All the ambulacra are deeply 
impressed, the anterior a little less than the others, but the furrow passes over the 
periphery on to the lower side ; its pores are snrall, composed of about twelve distant 
pairs from the centre to the fascicle ; the lateral ambulacra arc nearly closed, the 
anterior scries of pairs of pores bending conspicuously towards the middle line. 
The antcro laterals diverge under an angle of 75 degrees, the postero-laterals 
under an angle of 52 degrees ; the former arc somewhat flexiious, each series com- 
posed of about 30 pairs of pores, separated by fine granules ; one of the latter is 
barely more than half the length of the former, elongately ovate, and there are 
about 17 pairs of pores in each scries. The two anterior genital pores ai'e very much 
larger than the posterior. The fasciole is laterally not distinctly traceable, but ap- 
pears to have been very much contracted. The tubercles are conspicuously larger 
on the lower than on the upper side. 
This description refers to the larger specimen figured ; its form is slightly 
changed by accidental pressure, and the median hinder crest is injured, the conse- 
quence being a greater roundness of the periphery than it ajipears to have naturally 
possessed. 
Another smaller specimen has a comparatively higher and slightly more ovate 
test ; the ambulacra arc similarly placed, and relatively of equal proportions, but 
the pores arc less numerous ; one antero-lateral has only 20 pairs, and one postero- 
lateral 11 or 12 jiairs in each series. The granulation of the surface and the sharp- 
ness of the anterior edge is in both specimens exactly similar. 
Locality . — Near Ootatoor, in a yellowish sandy limestone. Only the two figured 
specimens were examined. 
Formation . — Ootatoor group. 
5. IIewiasi'eu viciisrTJs, Stoliczka. PI. II, Fig. 1. 
II. testa omto cordata, supra modice convexa, infra convexiuscula, in tota super- 
ficie fere cequaliler atque crassiuscule tuberculata, apnee subeentrali, postice panto 
elevatiore quam antice, lateribus convexiuscidis, in parte anteriore rotundate suban- 
gulatis ; ambulacris profundis, sidco anteriori laiissimo, ad peripheriam valde 
( 83 ) 
