] 36 ProceedingB of the "Royal Irish Academt/. 



Fig. 



34 Scirpeana anomala n. sp. Three portions enlarged (x 5) to show the 



difference iu the uatnre and distribution of the polyps at different 



levels, (a) near base, (i) midway, (c) tip. 



35. Spicules of Scirpearia anomala n. sp. 



36-38. Silhouettes of the axis of colonies of S. pectiimta to show different 

 angles of origin for the branches. 



39. »S'. pccthiafn. Silhouette of axis of a colony to show the crossing of the 



branches due to contraction. 



40. »S'. pcdinata. Silhouette of axis of a colony to show how a secondary 



branch may take the place of a primary. 



41. Secondary development in S. pecHiuita. 



42. Portion near the base of a colony of ;S'. pectinafa to show the distribution 



of the verrucae and the large canals superficially. 



43. a, b, and c. Ti'ansverse sections of S. pectinata to show the structure 



of the coenenchyma and the disposition of the main longitudinal 

 canals, («) main stem with numerous large canals, {h) and (c) 

 secondary branch, at different levels, with only two main canals. 



44. rt and h. Two views from the non-polyp-bearing aspect of a secondary 



branch of *S'. pectinata to show the disposition of the polyps and 

 also their appearance when partially expanded, («) about midway, 

 (h) tip. 



45. Spicules of >S'. pectinata. 



46. Colony of Sciipearia elongata in the Museum of the Royal College of 



Surgeons, London (from a photograph suppUed by Dr. Burne). 



47. Spicules of the Royal College of Surgeons specimen of Scirpearia elo'iigata. 



48. Spicules of the British Museum specimen of Scirpearia eloru/ata. 



49. Scirpearia fiagellum. Portion of Naples specimen enlarged ( X 6) to 



show the nature and distribution of the verrucae. 



50. Spicules of Scirpearia flagelhim (Naples specimen). 



51. Colony (nat. size) of Scirpearia jlagellum (Cape). 



52. Portion of colony (fig. 51) to show the nature of the verrucae. 



53. Longitudinal section through the portion of Scirpearia fiagellum shown 



in fig. 52 to show the internal structure and the attachment of the 

 strong retractor muscles. 



54. Spicules of Scirpearia fiagellum (fig. 51 specimen). 



