Mr. MacLeay oji Systems and Methods vi Natural History. 199 



Species. Icon. 



9.1.X.\\.Hyperici, Fab Ernst, VI. PI. CCXLII. f. 357. 



28. — Perspicillaris^lAnn. Ernst, VI. PI. CCXXXVLf.345. 



29. — Platyptcra, Esper. Ernst, VII. PI. CCXCI. f. 490. 



30. — iJfliZ/osa, Esper.... Hubn.Noct.Tab.92.f.4.34.(foem.) 



31. — AntirrhiniyUvihn. Ernst, VLPl.CCXXXVII.f.347. 



e. f. 



32. — Linarice, Fab Ernst,VI.Pl.CCXXXVII.f.347. 



a— d. 



33. _ Opalina.HvLhn... Hlibn.Noct.Tab. 81.f.376.(foem.) 



34. — Delphinii, Linn.* Ernst, VIII. PI. CCCX. f. 538. 



Curtis, Brit. Ent. II. PI. 76. Larva 

 et Imago. 

 [To be continued.] 



XXIX. A Letter to J. E. Bicheno, Esq., F.R.S., in exa- 

 viination of his Paper " On Systems and Methods " in the 

 Linnean Transactions. By W. S. MacLeay, Esq., A.M.., 

 F.L.S., 3fc.\ _ 

 My dear Sir, 

 T HAVE read your Paper " On Systems and Methods," in 

 '- the Linnean Transactions:}:, with some degree of interest, as 

 it derives no small importance from being, as every v/ord shows, 

 clearly written ex cathedra. With a few exceptions, which 

 I should hope have proceeded from inadvertency, it is, more- 

 over, upon the whole, a liberal exposition of the opinions pre- 



males: jw«g5 slightly cleflcxed during repose; c?2<eno?- obscurely den- 

 ticulate on the hinder margin : in general of gay colours, sometimes 

 with pale reticulations, and mostlj' with a pale undulated striga, in 

 which is usually a conspicuous angulation, resembling the letter W, 

 near the posterior margin ; stigmata distinct ; jiostcrinr wings with an 

 oliscure emargination towards the costa : larva naked, generally of 

 lively colour : fjjyjrt subterranean." — Slcji/i. Haust. II. p. 179. 

 * CuARici.EA, Steph. Curtis. 

 "Aidennce long setaceous, composed of numerous short joints covered with 

 scales above, hairy beneath, 1st joint large, concealed by long, hairy 

 scales. Lahrum and mandibles attached to the cly|)eus. MaxilUe nearly 

 as long as the body, with a few glands like tentacula towards the apex. 

 Labial palpi rather short, curved upward, covered entirely with long 

 hairy scales, S-jointcd, 1st joint long, cylindric, 2nd shorter, some- 

 what ovate, 3rd small ovate. Head trigonate viewed from above. 

 Abdomen without tufts of scales, apex of the male slightly bifid. Wings 

 deflcxed, superior somewhat lanceolate, inferior rather small. CUia 

 very long. Legs clothed with soft hair, anterior rather short. Tibi<e, 

 anterior very short, trigonate, with 2 horny naked spines at the apex, 

 the internal one being very long and curved. Tarsi .'i-jointed, armed 

 with rows of spines beneath, 1st being very long. Claws minute, bifid. 

 PiJviUi distinct. Caterpillars with (i [)ectoral, 8 abiloniinal and 2 anal 

 feet." — Curtis, I. c. 



\ From the Zoological .Journal, vol. iv. p. 402. 



t Vol. XV. p. 471.— See Phil. Mag. and Ann. vol. iii. p. 213. 



valent 



