OF WESTERN SIND. 95 



published by de Loriol, and from those described by d'Archiac and Haime from 

 Sind. 



Conoclypeus declivis is not without its alliances with Conoclypeus subcampanwi- 

 formis, Bittner, from the Eocene of the Istrio-Dalmatian area. 



The portion of a test which shows a phyllode, on Plate XII, Fig. 8, came from a 

 Conoclypeoid-looking test. But there are evidently additional or intercalated plates 

 in the ambulacrum ; and the pores penetrate through them, and are not simply in the 

 line of the sutures. The specimen does not appear to belong to the genus Echinolampas ; 

 and we introduce it into de Loriol's new genus Phylloclypeus. 



Probably Phylloclypeus will eventually be admitted to be a subgenus of EcMno- 

 lampas. At present we associate it with the Echinolampinse as a subfamily of Cassi- 

 dulidse. 



The genus Plesiolampas has one species in the strata below the Trap, or in the 

 Cardita-Beawnonti beds (Plesiolampas elongata, nobis) ; and there are five well-marked 

 species in the Eanikot series. There are none in the higher horizon of the Khirthar 

 series, nor are any species amongst the collections from Kach. There are no forms 

 resembling any of the genus in the collections of d'Archiac and Haime, nor, in fact, 

 in any others. 



The numerous specimens in a good state of preservation and of different stages of 

 growth have enabled us to give the minute details of the test in young and old speci- 

 mens. There are certainly no jaws, and the phyllode is rudimentary. The inequality 

 of the length of the poriferous zones is found in the young forms only ; and the peri- 

 proct becomes more totally inframarginal and longitudinally elongate with age. 



The genus does not appear to be represented elsewhere than in Sind and (excepting 

 the solitary species below the Trap) in the Eanikot series, of which it is charac- 

 teristic. 



MM. d'Archiac and Haime described a Cassidulid under the name of Eurhodia 

 Calderi, but could give no satisfactory account of its geological horizon. The type in 

 the collection of the Geological Society of London is not in good condition ; and a 

 specimen amongst those from the Eanikot group is in a moderately good state of pre- 

 servation. But the collectors doubted the finding the specimen in situ ; and on referring 

 to the Khirthar series, which overlies the Eanikot, we find aniongst the specimens 

 derived from it numerous forms presenting the same kind of colour and mineralization. 

 The form may or may not belong to the Eanikot series, and we enter it with doubt. 

 It is a Bhynchopygus, however, and not a Eurhodia. We fail to see that the type of 

 Eurhodia Calderi in the collection of the Geological Society is a Eurhodia ; it is a 

 Bhynchopygus. 



The Bhynchopygus pygmceus might be at first sight taken for a young B. Calderi ; 

 but it is not so. It differs from the Egyptian forms described by de Loriol ; and from 

 its mineralization there is no doubt about its being a true Eanikot form. 



A species of Cassidulus is amongst the Eanikot series ; and the specimens show the 



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