210 THE FOSSIL ECHINOIDEA 



after passing inward for some distance it is then abruptly bent to follow a line parallel 

 with the margin of the petal, and this course is continued until near the inner third of 

 the petal, when the fasciole is bent sharply backwards to cross the lateral interradia, 

 passing finally round the extremity of the posterior petal and across the odd posterior 

 interradium. 



BemarJcs. Although there are a number of examples of this species in the 

 collection from difi'erent localities, not a single one unfortunately is well-preserved, and 

 nearly all are greatly weather-worn and damaged. We are consequently unable to add 

 anything further to the foregoing observations. The species is readily distinguishable 

 from its near ally M. Sowerbyi by the different form, and in having the posterior part 

 of the test higher than the anterior, by the different proportions of the petaloid 

 ambulacra, and by the different form of the peripetalous fasciole, which is deeply 

 reentrant in the lateral interradia and unbent in the anterior interradia. A young 

 example 18 "5 millim. long exhibits all the characters of the larger specimens. It is of 

 interest to remark that in no case hitherto have M. Sowerbyi and M. scutiformis been 

 found associated at the same locality. 



G-302 

 127 ' 



Length of the test 



Breadth of the test 



Height of the test . 23-5 18? (crushed) 18-5 22 19 10 



Localities. In the Khirthar series of strata : — 



i. North-east of Kale-ka-Kua, seven miles south-east of Trak. Survey-number 



ii. Mairi valley, south of Teyon. Survey-number ^^. 



iii. Exact locality not known {presented), said to be near Kotri, probably the hills 



G-280 



west of Kotri. Survey-number 



iv. Near Meting Eail way-Station. Survey-number 



144 



112 • 



G280 



V. Ketihir-ka-lak (pass), east side of Surjana range. Survey-number -s^- 



vi. Eight or nine miles south by west of Jangri, and east of the Surjana range. 



Survey-number -^. 



vii. Twenty-four miles west of Kotri (entering the hills on the road to Bula 



Khan's Thana). Survey-number -i^. 



Illustrations of the Species in Plate XXXVI. 

 Fig. 1. Abactinal view of the test : natural size. 



2. Actinal view of the test of another specimen : natural size. 



3. liongitudinal profile of the test : natural size. 



