OF SOUTIIEEX INDIA. 135 



quotes iS'ilssoii's origiual figure of that species, it is perhaps true virgatns. Tlie 

 form described as viryatus by RcEuier froju Texas (Kreidebild., p. 6G,) does uot 

 exhibit any appreciable difference from ciirvatus, but was called Texcmus by Gabb. 



7. Pecten (Stncyclonema) obovaits, Stolicska, PI. XXXII, Figs. 6 — 9. 



P. [^SyncJ] testa ocata, apice ucutata, cequ'icalci, valcis paululum coiwexl/tsciilis, 

 ant siib-lceoigatls, ant concentrice laiuellose striatis, auriculis parcis, cequalibus, 

 luterallter valde declicibiis. 



This species is somewhat allied to Amusi urn memhranaceum, Nilss., and also to 

 Pseiidani. laminosum* Mant., but differs from both by the comparatively smaller 

 size of the ears, which are equal and very oblique at the lateral margins. 



In well j)reserved specimens the surface is marked with concentric lamellar 

 equidistant stria?, exactly as in laminosum, but these strioi are very easily worn off', 

 and in such specimens the surface becomes nearly quite smooth. The upper 

 lateral margins of the shell meet at the beak with an angle of 98 . 



Localities. — Ootatoor, Moraviatoor, north and north-east of Odium, south of 

 Puravoy, &c., in broAvnish earthy limestone. 



Formation . — Ootatoor group. 



8. Pecten [Sy>'cyclonema] Sitaicts, Stoliczl-a, PL XLII, Pig. 5. 



P. \_Sij)ic.'\ testa orhiciilate ocata, panim concexa, teniii, Iceciyata, polita, apice 

 brevlter acntata, auriculis sub-cequalibHS, pjostica oblique desinente, aiitica concexe 

 truncattt, ad basin paululum insinuata. 



Easily distinguished from the last species, which it closely resembles in form, 

 by the different shape of the ears, the anterior being convexly trimcate and 

 slightly insinuated at the base. 



Localitij. — Korth of Odium, in brownish earthy limestone ; apparently very 

 rare. 



Formation. — Ootatoor group. 



9. Pectex [Pseudamusiijm] Garudanus, Stoliczka, PI. XXXII, Fig. 4. 



P. \_Pseudam.^ testa sub-orbiculari, antice jxiulo latiore quam postice ; raids 

 complanatis medio et ad apicem parum conrexis, tenuissimis, striis incrementi 

 subtilissimis notatis ; auriculis magnis, fere (equalibus, antica conccve truncata et ad 

 basin paulo emarginata. 



This species differs from the last by the more orbiculate shape and somewhat 

 smaller convexity of the valves ; the ears are of similar form, but comparatively 

 still larger. The shell is very thin and only marked with very fine, concentric 

 striae of growth. 



Localities. — 'East of Anapaudy and near Veraghoor. 



Formation. — Trichinoi^oly- grouj). 



* Tliis is considered by Morris as identical with Fcc;en orhieidans. 



