British Museum collection ; but he appears t<> have elevated sev< ral 

 distorted specimens into the rank of species, and, like most modem 



French authors, describes his species as they came to band, without 

 paying any regard to the characters which separate them into na- 

 tural groups. 



Having hail occasion to examine these specimens afresh, 1 propose 

 to divide those in the British Museum into the following genera 

 or subgenera. 



As the names Penicillus, Aapergillum, Clepsydra, and drytene 

 have been given to this genus, I have used them for the subgenera 

 rather than create new names. At the same time it mus( be observed 

 that all these names were applied to a single Bpeciee, and to quote 

 them as the genera of the authors who first used these name.-, would 

 produce a very false impression; but this is an error that is ((in- 

 stantly committed*. 



I. The umbo and a considerable portion of the calves exposed <>,, 

 the outer surface of the tube. Fringe distinct, of one 

 of tubes. 



1. "Waknea. 



The edge of the tip of the siphon periodically expanded, the umbo 

 and great part of the valves exposed. Tube cylindrical, the BiphonaJ 

 end furnished with expanded plaited ruffles. Fringe distinct, of a 

 single series of thick simple tubes. The animal unites sand, Forami- 

 nit'cious shells, and even stones to its tube. 



I have named this genus in honour of my friend Miss Elizabeth 

 M "arne, who translated, at Dr. Leach's recommendation, Lamouroux's 

 'Polypiers hYxibles,' and in 1824 published it at her own expense, 

 under the title of ' Corallina,' and who from that time to the 

 present has been an industrious student and collector of natural pro- 

 ductions in various parts of Europe and Africa. 



1. WaRNEA VAGINIEERA. B.M. 



./. papilliferum, Lamk. no. 2; Savigny, Egypt. N. Nisi. i. 70. 

 f. 91-99; Ruppell, Atlas, t. ; Sow. Genera, f. 12; Chenu, t. I. 



f. 1, var. small, and t. 1. f. 9. 



./. Deleeeertianum, Chenu, t. 1. f. 2, var. ruffles far apart. 



Bed Sea. 



Miss Elizabeth Warne has most kindly sent me a series of twelvi 

 specimens of AtpergxUum vaginiferum from the Red Sea for exami- 

 nation. 



They are all adult, and very nearly of the Bame diameter, and 

 the difference in the height of the tube between the basal fringe and 

 the first "ruffle" is very Blight, varying between B{ and 1' inch 



* See paper "On the Development of the Shell and Tube of dtpnftikm" 



(Ann. and Map. N. H., J line 1858, p. 12 



+ " M. Lamarck," ol :!l ,l '' grand • de la 



partic anteneore da tube, n doil avoir plwrieari piedsdk I .mik. Hist 



i .1 i have -> en i abool 18 mohes. 



