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Show 14 MR. R. TRIMEN O N BUTTERELIES F R O M [Jan. 16, P L A T E III. Figs. 13-15 represent transverse sections through the snout of Stage II. Fig. 13. Through the external nostrils. 14. Through about the middle of Jacobson's organ. 15. Through the septal gland, maxillo-turbinal, and 1st ethmo-turbinal (" naso-turbinal"). 16. Jacobson's organ from the section represented in fig. 14, more highly magnified. 17. Transverse section of the snout of a young Ornithorhynchus slightly larger than Stage II. of Echidna. The section passes through Jacobson's organ behind the naso-palatine duct, and is drawn for comparison with fig. 14. List of Abbreviations. aln. aln.tb. c. e.n. e.tb. h. hr. h.t. Ja. Ja.c. Ja.d. Ja.gl. Ja.n. Ja.tb. m. mn. Ali-nasal cartilage. Ali-nasal " turbinal." Caruncle. External nostril. Ethmoturbinals. Horny layer of snout. Hairs. Horny teeth. Jacobson's organ. Cartilage of Jacobson's organ. Duct of Jacobson's organ. Gland-tubes of Jacobson's organ. Nerves of Jacobson's organ. " Turbinal" of Jacobson's organ. Mouth-cavity. Lower jaw. m.tb. Maxillo-tnrbinal. n.c. Nasal cavity. n.d. Naso-lacrymal duct. n.gl. Small glands of the nose. np.c. Naso-palatine canal. p.gl. Palatine (sweat) glands. r. Ridge on septum nasi. rs. Cartilaginous rostrum or floor of nasal chamber. s.n. Septum nasi. sp.gl. Septal gland. sp.gl.d. Ducts of septal gland. sp.gl.d'. Duct of septal gland which enters Jacobson's organ. St.gl. Steno's gland. sw.gl. Sweat-glands. t. Tongue. vo. Vomer. 2. On a Collection of Butterflies made in Manica, Tropical South-east Africa, by Mr. F. C. Selous, in the year 1892. By ROLAND TRIMEN., F.R.S., &c, Curator of the South-African Museum, Cape Town \ [Received November 13, 1893.] (Plates IV.-VI.) In communicating to the Zoological Society this account of what I believe to be the first collection of Butterflies made in the Manica Country, I am fortunate in being able to preface it by the following interesting sketch of that hitherto very little-known 1 Mr. A. G. Butler, who, in Mr. Trimen's absence, has kindly corrected the proofs of this paper, sends the subjoined remarks : - " I think it would be well to call your attention to the fact that M r . Trimen has unwittingly redescribed some of the species recorded in m y paper on Mr. Johnston's collections from Nyasaland (P. Z. S. 1893, p. 613) not yet published. For example, the Charaxes (p. 45) which he calls C. selousi is palpably only a slight variety of m y C. whytei {op. cit. p. 649); Lycana exchisa (p. 47) is evidently the male of m y Castalius hypoleucus (op. cit. p. 660) [N.B. Trimen does not adopt the modern genera proposed for the Lycceniuce]; Cyclopides |