GORDIIDA. oo 
5. Murnis, nov. sp., Stebold MSS. ? 
Hab. Abdomen of Decticus verrucivorus. 
From the collection of M. Siebold. 
6. Mrermis sprrauis, Baird. (Tab. I. f. 3.) 
About 7 inches in length and 3 mill. in breadth ; of a red colour, 
rigid and twisted into many spiral convolutions. Anterior and 
posterior extremities obtuse. Body of nearly equal size through- 
out and quite smooth. 
Hab. Abdomen of a'species of Grasshopper from Rio Janeiro. 
7. Mermis ricipus, Baird. 
Body of a light amber colour, smooth, and very shining, narrow 
at upper extremity, very soon becoming thicker, and termi- 
nating at inferior extremity in an obtusely conical point. The 
animal is very rigid and stiff throughout its whole length. 
Length 10; inches, breadth about $ a line. s 
Hab: - 2 : 
From old collection. 

XXI. GORDIUS. 
Gordius, Linneus et Auctorum. 
A. Skin smooth. 
1. GoRDIUS AQUATICUS. 
Vitulus aquaticus, Gesner, Aquat. 463 ; Aldrovandus, Inspect. 720, 
t. 765. 
Seta aquatica, Merret, Pin. Rer. Nat. 207. 
Gordius aquaticus, Linn. Faun. Suec. 2068; Syst. Nat. Ed. 12, 
1052; Gmelin, S. NV. 3082; Ene. Méth. t. 29, f. 1; Bose, Hist. 
Nat. Vers, i. 230, t. 8, £4; ? Turton, Brit. Faun. 130 ; 1 Pennant, 
Brit. Zool. iv. 27; Berthold, Uber den Bau des Wasserkalbet ; 
Lamarck, An. 8. Vert. lil. 220) ; 2nd ed. ili. 671; Dwardin, Ann. 
Se. Nat. 1842, Xvili. 142 ; Hist. Nat. Helminth. 297; Siebold, 
Wiegm. Arch. fiir Naturg. 1838, iv. 302; 1843, ii. 302 & 307; 
Entom. Zeitung. 1842. 
Gordius seta, Muller, Hist. Verm. i. pt. 2, 30, n. 161. 
Dragonneau ‘de Claix, Charvet, Nouv. ‘Ann. du Mus. 1834, iii. 38. 
Hab. Fresh-water ponds and ditches, &c. 
Male, from the collections of Professor Bonelli and Dr. Siebold.° 
Female, from the collection of Dr. Leach and old collection in 
British Museum. 
s 
