PENTASTOMA.. 37 



the whole length of the body, on each side, runs a pretty deep 

 sulcus or groove, interrupting the circular lines. Length 11 

 inches and 3 lines, breadth about -| a line. 



Hab. Abdomen of Carabus violaceus from Berwickshire. 



From the collection of Dr. George Johnston. 



6. Gordius pustulosus, Baird. 



Body of a light brown colour, not ringed across, completely co- 

 vered with minute, flattish-looking papilla;, and numerous 

 larger raised dots or small warty protuberances intermixed, 

 tapering considerably at superior extremity, and becoming gra- 

 dually thicker as it reaches the tail, which is obtuse and marked 

 across with a deep indentation. Along the whole length of the 

 body runs a deep groove on one side only. 



Length 8j inches, breadth i millimetre. 



Hab. Abdomen of Blaps obtusa. 



From the neighbourhood of London. 



When brought to the Museum it had just emerged from the 

 body of the Blaps, and was then 4 inches long and about the dia- 

 meter of a horsehair. It was placed in water and kept alive for 

 a day or two, at the end of which time it had grown to double its 

 original size, both in length and diameter. 



Order II. ACANTHOTHECA. 



Trematoda (part), Rudolphi. 



Onchocephala, Blainville, Diet. Sc. Nat. 



Nematoidea (part), Cuvier. 



Vers Planulaires (part), Lamarck. 



Acanthotheca, Diesing, Ann. Mus. Wien. 1835 ; Dujardin. 



I. PENTASTOMA. 



Taenia (sp.), Chabert, Pilger, Abildgaard, Gmelin, d'c. 

 Linguatula, Frblich, Gmelin, Blaiaoille, Cuvier, Lamarck, Bote, 



Owen, &c. 

 Polystoma, Zeder, Rudolphi. 

 llalysis (sp.), Zeder. 

 Tetragulus (sp.), Bone, Lamarck. 

 Prionoderma, Rudolph i. 

 Porocephalus, Humboldt. 

 Pentastoma, Rudolphi, Bremser, Creplia, Diesing, Miram, Dujardin. 



