Reptilia. 41 



87) Chaiidler, A. C, (Univ. of California), On a Lymphoid structure 

 lying of the Myelencephalon of Lepidosteus. In: Univ. of Calif. Pub. 

 in Zoology IX, Nr. 2, S. 85—104, pl. 10 — 11, 1911. 



Author's Suramary: 1. A lymphoid, gland-like structure overlies the myelen- 

 cephalon of Lrpidostcus , and is closely associated with the pial covering of the 

 fourth ventricle. Though large and conspicuous, it has been almost universally 

 overlooked by workers on the brain of I.epidoHtnis. 2. The myelencephalie gland 

 (provisionally so named) is present in both Lepidostcus osscus and L. pAaiysto- 

 mus, which are the only species of the genus examined be me. No indication of 

 it has been found in other ganoids. 3. The size and form are very constant in 

 all specimens dissected and are practically the same in both species. Topographic- 

 ally it seems to be a highly developed portion of the pia-mater. 4. The micro- 

 scopic structure is typical of a lymph gland. A reticulum of connective tissue 

 underlies the whole, and in this a number of other histological elements are 

 nelted. 5. The most characteristic feature is the abundance of cells containing 

 masses of granules staining deeply with eosin, of unknown nature, and resembling 

 melanin granules in size and form. <!. There is some evidence that the granules 

 mentioned above pass into the blood vessels and there disintegrate. 7. The ear- 

 liest indication of the structure is in an 18 mm embryo, where there is a blood 

 sinus lying between the covering of the fourth ventricle and the cartilaginous 

 roof of the skull. This sinus is larger and more conspicuous in embryos 21,5 

 and 22 mm in length. 8. On a 55 mm embryo the condition is directly inter- 

 mediate between the 22 mm stage and the adult. The connective tissue reti- 

 culum and pigment cells are well developed, and large blood sinuses are still 

 present, but the granulär masses so characteristic of the adult are not yet in 

 evidence. N. M. Stevens (Bryn Mawr.). 



88) Lo Bianco Salvatore, Su alcuni stadii postlarvali appertenenti a Gadidi 

 rari del golfo di Napoli. In: Mitt. Zool. Stat. Neapel. 20. Bd. 2. Heft. l'Jll. 19 S. 



Bescbreibung von 4 bisher unbekannten postlarvaleu Stadien seltener Gadus-Arteo. 

 {Mora mediterranea Risso (14 mm Länge), Uraleptus maraldi Risso (26 mm), Hyjjsirhyn- 

 chus liepnticus Facciolä (23 mm) und Physieuhis dalwigkil Kp.). Meist abyssale Formen 

 aus 4 — 500 m Tiefe, die ganz vereinzelt duixh Tiefenströmungen in die Küstennähe ge- 

 tragen und an die Oberüäche gerissen wurden. G. Stiasny (Triest). 



Hierzu: Nr. 16. 



Eeptilia, 



/89) Grere, C, Die Teichschildkröte (Einys orbicularis [L.]» in den Ostsee- 

 provinzen. In: Korres^jondenzbl. Naturf.-Ver. Riga. Bd. LIII, S. 19 — 23, 1910. 

 Nachweis der bisher bekannten Fundorte der Teichschildkröte in Kurland. Es liegt 

 kein Grund vor, am Vorkommen des Tieres in Kurland zu zweifeln, während für die 

 Gebiete nördlich von der L)üna bisher kein einziger Fall sicher beglaubigt ist. 



C. Greve (Riga). 



90) Schelkowiiikow, A. B., Beobachtungen an Reptilien des Kreises Aresch 

 im Gouvernement Elisabethpol. In: Mitteil. Kaukas. Mus., Titlis, Bd V, Lief. 2 

 bis 3, S. 217—242, 1911 (russ. m. deutsch. Res.). 



Es werden 29 Arten behandelt. Der Autor hat in der Gegend von 1892—1909 

 180 Exemplare Reptilien und 9 Exemplare Amphibien gesammelt, die sich im Kauka- 

 sischen Museum befinden. C. Greve (Riga). 



Hierzu: Nr. 4-2, 43. 



