OF KACHH AND KATTYWAR. 51 



of the test. The odd ambulacrum is narrower and shorter than the others. The 

 apical system is excentric in front ; and the test slopes rapidly in front, where the margin 

 is well rounded. The anterior poriferous zone in the antero-lateral ambulacra is short ; 

 and the ornamentation is crowded. 



Locality. Kachh. Between Bayow and Didaptir, south-west of Lakpat. Survey- 

 number C 034 f 



Illustration of the Species in Plate II. 



Fig. 5. The test, included more or less in rock : natural size. 



This species appears at first to resemble an exaggerated variety of Echinolampas 

 globulus, Lamk. ; but as the specimen is so incomplete we do not associate it with 

 any species. 



Family SPATANGIB^. 



Subfamily SPATANGINJE. 



Genus EUSPATANGUS, Agassiz, 1847. 



1. EuSPATANGUS EOSTEATUS, d'AvcMaC. 



This species has been noticed in describing the Echinoidea from the Nummulitic 

 series of Kachh (p. 47). Its highest habitat is in the Orbitoides beds near Kapurasir, 

 north of Kayari. It is also found in the Khirthar (Nummulitic) and Nari (Oligocene) 

 series of Sind. 



VI. Description of the Fossil Echinoidea from the Miocene Series of Kachh. 



Or^fer ECHINOIDEA ENDOCYCLICA. 



Family CIDAHWM 



Genus CIDAEIS, Klein, 1734. 

 The test is thick, circular in outline, and equally flat above and below. The 

 ambulacra are narrow and undulating, and only carry very small tubercles or granules 

 in from two to six rows. Interambulacral areas at least four times as broad as the 

 ambulacra!, with two rows of large tubercles, from four to seven in a vertical row, 

 perforated, and either crenulated or not. Scrobicules large, either circular or elliptical. 

 Miliary zones more or less broad and sometimes depressed. Poriferous zones narrow, 

 formed of series of pores, the pairs of which are not conjugated by furrows. 



1. CiDAEis Halaensis, d'ArcMac & Haime. Plate VIII, Figs. 7, 8. 



This species was founded by MM. d'Archiac and Haime on a portion of a test, 

 on which a part of an interradium and only part of the vertical half of two ambulacra 



h2 



