OF KACHH AND KATTYWAE. 83 



A small tuberculation is above and below the larger tubercles on the plates; 

 it is distinct, unequal, and in lines parallel with the abactinal and actinal sutures, which 

 are grooved, as it were, by the lines of raised ornamentation becoming abrupt over them. 

 There is often a very small tubercle between the larger innermost two on the plate ; 

 and near the actinal surface, where there are only two tubercles, a line of small 

 tubercles is parallel with the median suture. This tuberculation, surrounding the 

 larger tubercles on three sides, is unequal. 



The interradial plates are very broad in relation to their vertical measurement, and 

 are all characterized by having a row of tubercles along the central line of the breadth, 

 increasing in number from three near the cuts to seven or eight at the ambitus. The 

 tubercles have circular bases standing above the level of the plate, supporting smaller 

 conical bosses, and well-developed, nearly hemispherical mamelons, which are imperforate. 

 There is no crenulation. The fourth tubercle from the ambulacral side is the largest, 

 and the three nearest the median line are the furthest apart. 



The actinal and abactinal sutures are grooved, and there is a raised minute orna- 

 mentation on the plate immediately above and below the grooving. This ornamenta- 

 tion is of one, two, or three rows, in different parts, of small tubercles, some circular 

 and others elongate vertically in outline. The tubercles, of different sizes as well as of 

 shapes, project ; and some in relation to the largest tubercle, and those on either side of 

 it, assume quite a vertical linear form, most readily seen when the light crosses the ver- 

 tical line of the plate at right angles. Actinally, and where the number of the tubercles 

 is less, there is often some deviation fi-om the horizontal line so well kept at the ambitus : 

 moreover there are small tubercles along the line of the median suture, which presents 

 a feeble furrow. 



It is evident that the furrowing of all the sutures is produced by the ornamen- 

 tation, which is highest close to them, and slopes inwards towards the centre of the 

 plate. 



The peristomial cuts are well developed, have a raised border, and enter well into 

 the second interradial plate. 



Measurement from peristome to extreme bulge 17 millim. ; breadth of the peri- 

 stome 14 millim. ; extreme breadth of test 48 millim. ; probable height 40 millim. 



Locality. Kattywar Miocene. Half a mile east of Lowarali, Oka Mandol. Survey- 

 number -^. 



Illustrations of the Species in Plate XIII. 



Fig. 7. The imbedded test : natural size. 



8. Ambulacral and interradial plates : magnified. 



Subfamily TEMNOPLEUBIDj^, Desor. 



This subfamily is largely represented in species and individuals in the Miocene of 

 Kattywar. The genus is, however, Temnechinus, Forbes, = Temnojoleurus, d'Archiac ; 

 and in only two specimens have we found crenulation, and then in one or two tubercles 



m2 



