254 Dr. O'Bryen Bellingham on Irish Entozoa. 



is now named and described as new, the name being derived from 

 the peculiar form of its corona, concerning which I have ah-eady 

 spoken at some length. In general appearance it closely resembles 

 C. Trifolii and C. Epithymum. 



4. C. europcea (Linn.) ; florum glomerulis bracteatis sessllibus, tube 

 corollee per anthesin cylindrico, friictiferse ventricoso, sqximnis ad- 

 2^ressis erect is bijidis basi distantibus : lobis divergentibus attenuatis, 

 calyce corolla multo breviori, stigmatibus fibformibus. PI. IV. fig. 4. 



C. europsea, Linn. Sp. PI. y>. 180. excl. var. /3. 



Scales closely adpressed to the tube of the corolla, always pre- 

 sent, narrow, bifid ; their lobes slender, very acute, entire, or with 

 two or three obscure teeth at the end ; each scale separated from 

 its neighbour by a broad rounded space. Stigmas filiform. 



Parasitical upon herbaceous plants, such as Urtica, Humulus, 

 Carduus, &c. 



St. John's College, Cambridge, Feb. 1, 1844. 



XXXII. — Catalogue of Irish Entozoa, with observations. By 

 O'Bryen Bellingham, M.D., Fellow of and Professor of 

 Botany to the Royal College of Surgeons in Ireland, Member 

 of the Royal Zoological, Geological and Natural History So- 

 cieties of Dublin, &c. 



[Continued from p. 174.] 



Order 2. ACANTHOCEPIIALA. 



(Derived from uKai'da, spina, and KccpaXt), caput.) 



The order Acanthocephala contains only a single genus, Echi- 

 norhy^ichus. 



The characters of the order are as follows : — 



The body is cylindrical or bladder-like, subelastic, obtuse at both ex- 

 tremities, provided with a retractile proboscis, which is armed with 

 minute recurved spines arranged in a regular series. The intes- 

 tinal canal is complete ; the sexes are distinct ; females oviparous. 



The species are numerous, and occur in all the classes of ver- 

 tebral animals ; they are frequently found attached to the mucous 

 membrane of the alimentary canal by means of their proboscis, 

 consequently their powers of locomotion must be very limited. 



Genus 9. Echinorhynchus. 



(Derived from e^^tjos, echinus, and pvy\os, proboscis.) 

 This is the only genus in the order ; it was named by Miiller, 



