516 



Olf THE FISirLOSE POLTMOBPHINJ!. 



Soc. vol. xxvii. p. 244, pi. xlii. fig. 38 d. Zool. type: P. com- 

 pressa, d'Orb. Eecent ; Coast of Britain. 

 69. Polymorphina Orlignii, Brady, Parker, and Jones, 1870, Trans. 

 Linn. Soc. rol. xxvii. p. 244, pi. xlii. fig. 38^. Zool. type : 

 P. rotundata (Born.). Pliocene ; Suffolk. — Pig. 42, 



Tabular Synopsis of the Pistulose PolymorpMrKB, showing 

 the relative proportion of the several Species to the Groups 

 or Varieties described above ; and arranged on the basis of the 

 foregoing catalogue. 



Varieties 



1 





2. 



3. 



* 



4. 

 * 



* 



5. 



*** 



* 

 * 



6. 

 * 



7. 



* 



* 



* 

 * 



8. 

 *** 



*** 

 * 



9. 



* 

 * 



* 

 * 



Polymorfhina 

 cominunis ... 

 dibba 



* 



froblema . . . 

 trigonula . . . 



sororia 



gutta 



hirsuta 



fusiformis ... 



virgata 



lactea 



rotundata . . . 

 Humbokltii 



regina 



compressa . . . 

 angusta 



* 

 « 





Note. — The asterisks indicate occurrence and relative abundance. 



Varieties: — 1. damcecornis, Eeuss; 2. coronula,-n.oY. ; 3. acu- 

 placenta, nov. ; 4. horrida, lleuss ; 5. racemosa, nov. (1-5 ; 

 Series I, apical growths) : 6. circularis, nov. (Series II, sub- 

 apical) : 7. diffusa, nov. (Series III, diffuse) : 8. marginalis, nov. 

 (Series IV, marginal) : 9. complicata, nov. (Series V, mixed). 



It will of course be obvious that, in many cases, these varietal 

 names will have to be applied to more than one species of the 

 genus, since the latter, as a whole, shows a strong tendency to 

 take on one or more of these redundaat fistulose outgrowths. 



Prom this Table it is evident that Polymorphina gilha supplies 

 by far the greatest number and the greatest variety of exogenous 

 growths in this genus ; in fact, showing examples of each kind. 



