1 96 Mr. T. V. WoUaston on a Coleopterous Insect from the Canaries. 



which the tentacles are planted in two contiguous circles (though 

 those of each row are remote inter se). Sometimes this rounded 

 form is not observed, and then the disk is flat. 



Tentacles in two rows ; the first of eight, about 'Ol^ inch 

 long, and •0045 inch in medium diameter; the second also of 

 eight, marginal, remote, alternate with the former, papilliform, 

 their length not exceeding their diameter, or '005 inch. When 

 expanded, those of the first row either stand erect, or arch 

 slightly outward : their movements are rather sudden ; their 

 form quite cylindrical, with round ends ; their walls thick, appa- 

 rently imperforate ; a few cnidse scattered in their substance. 



Mouth elevated on a small abrupt papilla. 



Colour. Pellucid yellowish white, positive in the ratio of 

 opacity of the parts ; without markings. 



Size. Column when moderately extended about '025 inch in 

 diameter, to a point about halfway down its length ; diameter of 

 posterior inflation at the same time, '065 inch. Total length 

 in this condition '3 inch. The smallest Anemone known. 



LoCxVLiTY and Habits. I found it in much eroded limestone 

 from a cavern at Oddicombe, Devon, associated with Edwardsia 

 carnea, in June 1858. Having chiselled ofi" many fragments of 

 the rock, I put them into glass jars of sea-water ; and in a day 

 or two found Halcampa microps crawling up the side of the jar, 

 adhering by its inflated skin. In the course of a day or two 

 more, another and another appeared, until five or six had come 

 under my notice, most of them adhering to the glass. They 

 were active and locomotive, moving along the surface with ease 

 and comparative quickness (at least ten times their length in a 

 night), adhering by any part of the hinder moiety of the column. 

 Very frequently they threw the anterior portion suddenly round, 

 like an irritated caterpillar; and almost continually constrictions 

 were passing down in succession from head to tail. 



Specific name. From /^t/cpo?, small, and wi/r, the face. 



XXI. — Description of a Coleopterous Insect from the Canary 

 Islands. By T. Vernon Wollaston, M.A., F.L.S. 



Pam. ELATERIDiE. 

 Genus Coptostethus ?, WoU. 



Coptostethus ? canariensis. 



C. elongate- oblongus iiigro-brunneus dense cinereo-villosus, pro- 

 thorace magno valde couvexo subtilissime et densissime punctu- 

 lato, in medio late uecnon ad latera rotuiidato, elytris profunda 



