102 THE ENTOMOLOGIST. 



length of the abdomen) is longer than zonata (which he describes 

 as one-fifth the length of the abdomen) ; but he adds a variety of 

 zonata, of which he says, " aculeus longitudine quartse aut quintse 

 partis abdominis," which thus connects the two ; the coloration 

 of the abdomen and legs also varies greatly. None of our 

 specimens quadrate exactly with any of Tschek's four species, so 

 we follow Holmgren, and keep them together until more bred 

 specimens come into our possession ; even the neuration and 

 arese of metathorax, which Tschek uses for his distinguishing 

 characters, do not appear to be constant. We have included 

 Tschek's distinctions between the two species, but do not 

 consider them satisfactory. The cocoons appear to offer a much 

 more appreciable character than the imagos. We know four 

 distinct forms of S. zonata: — (1) Cylindrical (3|- by \\ lines), 

 hard, pearly white, semitransparent, without markings, except a 

 narrow opaque white central band, surrounded by a few slight 

 silky white hairs, ex Cheimatohia hrumata. (2) Pale yellowish 

 white, subopaque, without markings ; bred by Mr. Bignell, ex 

 Hecatera serena (? latrator), figured on plate ii., fig. 2. (3) Opaque 

 white, with faint black zonal markings ; bred by Mr. W. H. B. 

 Fletcher, but host uncertain (? macuUiies). (4) Deep brown, 

 rather rough, without markings, ex Euholia cervinaria (? zonata, 

 male) ; resembles the cocoon of S. incisa, but is rather narrower 

 and paler. The cocoon of S. declinator is cylindrical (85- by If 

 lines), brown, without markings. That of S. laticollis rather 

 smaller (3 by 1| lines), brown, reticulated with black; this 

 stronger towards base and apex, surrounded by brown flossy 

 silk, ex not half-grown larva of M. typica found feeding on 

 fuchsia by Mr. P. Inchbald, in the People's Park, Hull. The 

 cylindrical (3 by l^- lines), wrinkled, leathery, unicolorous olive- 

 brown cocoon of S. incisa is figured on plate ii., fig. 13. Brischke 

 describes the cocoon of S. raptor as cylindrical, hard, dirty white, 

 with two zones consisting of black spots, and the poles strewn 

 over with such spots and dots, ex Orgyia antiqua ; of S. cognata, 

 Tschek. ?, he says, " cocoon cylindrical, unicolorous pale brown, 

 from a young Noctua larva." To the two species in Marshall's 

 catalogue we can add S. raptor, Zett., S. incisa, Bridgm. (Trans. 

 Ent. Soc. Lond., 1883, p. 165), also S. laticollis, Holmgr. (in 

 Mr. Marshall's collection from Bishop's Teignton and Aberga- 

 venny), and >S'. postica, Bridgm., a new species. 



