OF SOUTHERN INDIA. 
17 
tnmcatis, anticis longiorihus aiqite valde dicevgentihiis, posticis breviorihus, opproxi- 
malis, anibohus ad termination.es truncatis. 
This is a species evidently closely allied to H. rana, but differing from it by the 
much larger and more regularly ovate shape of the fasciole, Avell developed tubercles, 
besides the granules on the surface, and by a greater length of the lateral ambu- 
lacra, provided with more numerous pores. One antero-latcral is only about one- 
sixth longer than a postero- lateral, the former having about 35 and the latter about 
30 series of pores in one series. The pores arc connected by distinct grooves, and 
each pair is separated from the next by a fine granular ridge ; the last pairs in each 
series are somewliat more distant than the preceding. Tlic antero-laterals diverge 
under an angle of about 115° to 122,° the postero-latcrals at the base under an angle 
of about 55°, but as they proceed backwards the angle decreases to only about 
40 degrees. 
The tubercles vdthin the fasciole are about equal in size to, but distinctly more 
distant from each other, than tliose near tlic periphery, while those at the lower side 
are conspicuously larger. The cheeks are rounded ; the aperture about one-fifth of 
the length of the test distant from the anterior end ; the lower lip is very prominent 
and granular ; the post- oral space much contracted near the aperture, coarsely 
tubercular. The position of the apex slightly varies ; it is generally sul)eentral, 
sometimes slightly posterior. The anal end is broadly truncate, and the anus is 
very near the upper end, as in U. rana. 
Localities. — South-West of Mulloor, South-East of Arrialoor, and East of 
Serdamungalum, in reddish ferruginous or whitish sandstone. 
Format ion . — Arrialoor group . 
9. IIeiiiaster cristatus, Stoliezka. PL III, Figs. 2 — 5. 
U. testa ambitii angulate cordato, gjostice aliquanto elongata, medio acute 
angtdata sen cristata atque paulo declici, ad terrninationem fere certicaliter sed anguste 
truncata ; infra regione post-orali deplanata, ante-orali lateraliter convex iuscula ; 
apertura semilunari, immersa ; supierfcie distincte granulata et tiiberculifera, 
tuberculis in latere inferiore maximis, intra fasciolam minoribus et distantioribus ; 
apice antero-cenlrali, ambulacris p)7'ofundissimis, fasciola ambitu testa: similari 
ciremndatis ; sidco anteriore latissimo, rapide declivi; ambulacris antero-lateralibus 
posticis longiorihus, ad terminationes truncatis ; primis angulo 130° — 140° divergentibus 
atque in tina serie 38 — 40 q)aria pororum exhibentibus, alteris angulo circa 40° 
junctis atque 28 — 30 qjoros in una serie gerentibus. 
A species very closely allied to the last, but the apex is more anterior, 
the ambulacra much deeper, the posterior inter-ambulacral space carinated, 
the fasciole is distinctly smaller, the posterior termination is lower, more narrowly 
( 87 ) 
