258 ILYANTHID^E. 



better of it, and has begun wisely to grow a new tail, 

 which is at present transparent, but with a ivell-defined 

 orifice. He lies half-buried in sand, and has several times 

 temporarily attached himself by his new tail."* 



Since this page was in type, Dr. Hilton has taken a 

 specimen at Bordeaux Harbour, Guernsey, which he lias 

 kindly transmitted to me. In its general characters and 

 markings, it agrees with the specimen described above ; it 

 is, however, much larger, being at least five inches long, 

 and three-eighths in diameter. The scapus is more spindle- 

 shaped, and more coarsely invected and corrugated ; the 

 physa I have seen inflated, but slightly. The tentacles 

 which correspond to the gonidial radii, and the pair at 

 right angles to these, are much shorter than the rest. The 

 dark gonidial radii have a flush of rich green. 



Many points in the form and anatomy of this genus 

 indicate, as has been ably shown by Quatrefages, a decided 

 approach to the Echinodermata, through such forms as 

 Syrinx and Sipunculus. 



Weymouth, P. H. G. : Brixham, C. K. : Guernsey, 

 T. I). II. 



[Beautempsii.] 



ECHINODERMATA. CALLIMORPHA. 



[Harassi.] 



carnea. 



H. chrysanthellum. 



* Kings] ey in litt. 



