ALCYONARIA OF SIND. 105 



XIII. Results of an UxaminaUon of the Species which have been described by 

 D'Archiac and Jules Haime and myself in former years. 



It will be observed, in examining the lists of the species of fossil Corals described 

 in this Monograph, that several of those which were noticed by MM. dArchiac and 

 J. Haime in their celebrated work on the 'Animaux Fossiles de I'lnde,' and some 

 of those which were considered in my essay on the Fossil Corals from Sind (1864), 

 are not mentioned. This arises partly because the carefully made collection of the 

 Geological Survey of India, from known localities, did not contain specimens of the 

 forms, and partly because some of the species were described from or recognized by 

 bad specimens. 



MM. dArchiac and J. Haime examined collections which came from all the 

 geological horizons of Sind except that of the strata beneath the Trap ; but the loca- 

 lities whence their types were derived were not recorded, except under the head of 

 places which have no recognized geographical position, or where all the Tertiary 

 strata are found. The term Hala Mountains is most deceptive and it has no geo- 

 graphical meaning ; and it was from those hypothetical hiUs that most of the specimens 

 so ably described by Jules Haime were derived. 



I was equally unfortunate in my early essay with regard to stratigraphical 

 and geographical knowledge. 



Nevertheless it is necessary to reconsider the species not hitherto described in 

 this Monograph, but which were found somewhere or other in Sind. 



Notice of Species of Corals described by MM. d'Archiac and J. Haime, but which 

 are not represented by Specimens in the Collection. 



1. Trochoctathus Van-den-Heckei, J. Haime. 



The corallum is slightly elongate, subpedicellate, compressed, and more or less 

 bilobate. The base is more or less slightly arched in the plane of the smaller axis, 

 and the growth-rings are feebly marked. The costse are straight, delicate, subgranular, 

 very slightly projecting, alternately slightly unequal, and most distinct near the calice, 

 where they may be subcrestiform. There are 130 to 160 of them. The calice is usually 

 in the shape of the figure " 8." The septa are thin and slightly unequal. The 

 height of the corallum is 3 centimetres (about 1^-q inch), and the great axis of the 

 calice is nearly 4 centimetres in length, or 1-| inch. 



But J. Haime, whilst noticing the existence of this well-known form at La 

 Palarea, near Nice, writes that he has never seen a specimen from France or Sind 

 that presented the columella and pali sufficiently to diagnose the form satisfactorily. 



If reference be made to the Plates accompanying this Monograph, several rather 

 bilobate forms of simple corals will be observed ; but none of them refer to a Trocho- 

 cyathus of the description given above. In fact, it is not a good species ; and any 



