389 
Martini, W., Lepidopterologische Beobachtungen. in: Katter’s Entomol. 
Nachrichten, 9. Jahrg. No. 1. p. 14—16. 
——— Lepidopterologisches. in: Katters Entomol. Nachrichten, 9. Jahrg. 
No. 4. p. 53—54. 
Notes on Lepidoptera. in: Papilio, Vol. 2. 1882. Nov./Decbr. (publ. 1883). 
p. 187-189. Vol. 3. No. 1. p. 25—26. No. 2. p. 42—43. No, 3. 
69: 
Porritt, G. T,, Entomological Notes. (Lepidopterol.) in: The Naturalist 
(Yorkshire), Vol. 8. Febr. p. 108. 
II. Wissenschaftliche Mittheilungen. 
1. On the Organ of Jacobson in Ophidia. 
By Prof. R. Ramsay Wright, Toronto. 
In his recent paper on the Lachrymal Duct in Tropidonotus Born! 
offers a new interpretation of the cellular columns which form the greater 
part of the thickness of the roof of Jacobson’s Organ. — He regards 
them as »die zellige Ausfüllungsmasse einfacher Drüsen von birn- 
formiger Configuration, die dicht an einander gedrängt die ganze 
Schleimhaut durchsetzen«, while Leydig on the other hand believed 
the cells composing the columns to be largely of ganglionic nature. — 
A recent study of Jacobson’s Organ in the common Garter-Snake 
— Eutaenia sirtalis (Baird & Girard) — induces me to believe that the 
older explanation is nearer the truth, and recalls some points of histo- 
logical detail described by Klein for the Rabbit and Guinea-pig?. 
The material at my disposal consisted of a series of sections of an 
embryo-head 6mm in length, and a series from the adult both made 
by Mr. A. B. Macallum who will shortly publish an account of the 
nasal region in Hutaenia? — I also made a second series from the adult 
to control the observations recorded below. 
Structure of the Olfactory Epithelium in the Nasal Cavity. 
Immediately within the cartilaginous nasal capsule lies the 
mucosa in which the following structures are to be observed: 
1) branched tubes of Bowman, 2) olfactory nerve-bundles, 3) pigment- 
cells, 4) capillaries which surround the glands and form a plexus on 
which, with the intervention of a distinct basement-membrane, the 
Neuroepithelium rests. The average height of the Neuroepithelium 
1 Morpholog. Jahrb. 8. Bd. 2. Heft. 
2 Quart. Journ. Micr. Soc. Vol. XXI. 
3 Ina forthcoming Fasciculus of the ,Proceedings of the Canadian Institute‘, 
Toronto. 
