Mr. Shuckard's Monograph of the Dorylidae. 315 



sistent with this view, we find accordingly that Coryne is 

 distinguished by having scattered tentacula of one kind only, 

 and by not possessing a tube ; Hermione, by having scattered 

 tentacula of one kind only, and a branched tube : Eudendrium, 

 by having regular tentacula of one kind only, and a branched 

 tube ; Tubularia, by having two sets of regular tentacula, 

 and a simple tube which is persistent ; and Corymorpha, by 

 having regular tentacula of two kinds, and a deciduous tube; 

 the animal ultimately becoming naked. 



Thus Corymorpha completes a circle linking Tubularia with 

 Coryne, partaking of the characters of both. Yet as it par- 

 takes more of the nature of the former than of the latter, it is 

 possible a genus as yet undiscovered may exist, characterized 

 by presenting a permanently noticed body, and regular ten- 

 tacula of one sort. 



British specimens of the Corymorpha will be figured by 

 Dr. Johnston in his Supplement to the ' History of British 

 Zoophytes/ 



XXXVIII. — Monograph of the Dorylidae, a Family of the Hy- 

 menoptera Heterogyna. By W. E. Siiuckard, Esq. 



[Concluded from p. 271.] 



Sp. 2. Dorylus helvolus, Lin. Length \2\ lines. 



Expansion 21£ lines. 

 Helvolus pilosus ; capite rufo, facie opalind convexd, petiolo acetabuliformi 

 segmento secundo multo minor. 



Vespa helvola, Lin. Mufi. Lud. Ulric Reg. 412. 5. 

 Mutilla helvola, Lin. Syst. Nat. ed. 12 a . t. i. p. 2. 967. 8. 



, Fab. Mant. i. 313. 18. 



— — — , l DerKaper? Christ. Naturgeschichte der Bienen,&c. 



p. 151. 

 Dorylm helvolus, Fab. Ent Syst. 2. 365. 1. Piez. 427- 1. 



Coquebert, Dec. 2. pi. 16. fig. 1. 



, Latreille, Hist. 13. 260. Genera Crust, et In- 

 sect. 4. 124. Diet. d'Hist. Nat. 2 me Ed. 9. 555. 

 Reddish testaceous, very pilose, especially at the vertex, the thorax, the 

 coxae beneath, and the apex of the abdomen : the head (excepting the 

 antennas and the mandibles, which are bright castaneous,) red, some- 

 times obscure, with most frequently a strong opaline reflection ; face 

 about the anterior ocellus very prominent, depressed at the insertion 

 of the antennae, as also just behind and between their base, where it 

 takes a triangular form : antennae short, setaceous, the scape rather 



z 2 



