He had, however, been already working for some time at a Classi- 

 fication of the Tineacea, and it w^as no doubt, in some degree, owing to 

 the encouragement derived from his successful determination of so 

 many of E-eaumur's Lepidoptera, that an epitome of this Classification 

 appeared in the " Isis " of the following year, 1839. 



This epitome, entitled " Versuch einer naturgemassen Eintheiluug 

 der Schaben " (an attempt at a natural arrangement of the Cramlina 

 and Tineacea), extends to 54 columns (27 pages quarto). 



In it the Cramhina are divided into two groups, the true Grambina 

 comprising 4 genera, and the Phycidece comprising 7 genera ; the 

 Tineacea, not divided into groups, comprise 42 genera, of which two, 

 Goryptilum and Stenoma, w'ere founded solely for the reception of exotic 

 insects (from Java and North America), so that the European Tineacea 

 were comprised in 40 genera. 



This classification is such a vast stride on anything that had 

 previously appeared in the pages of Duponchel, Stephens and 

 Treitschke, that one looks upon it with amazement, whilst reflecting 

 that it is really the maiden essay of a new author ; for though the 

 determination of Reaumur's Lepidoptera had been published a few 

 months previously, and hence appears as the author's first work, this 

 classificatory essay had been the work of Zeller during many previous 

 years. 



Unfortunately, in the pages of the " Isis " it remained too little 

 known, for though it may be said without hesitation, that no Entomo- 

 logical Library can be complete that does not contain those volumes 

 of Oken's " Isis " in which Zeller's papers have appeared, yet it is only 

 too rarely they are found on an Entomologist's book-shelves. 



The same volume of the " Isis " (1839) contained tw^o other papers 

 by Zeller ; one, the determination of the Lepidoptera mentioned in 

 De Geer's " Memoires," the other, a critical notice of Ereyer's deter- 

 mination of Reaumur's Lepidoptera; for, as may be easily supposed, the 

 two authors had not in all cases concurred in their determination of 

 Reaumur's species. 



In the "Isis" of 1841 appeared a treatise on the Pteroplwridcs, 

 and in that of 1844, a Monograph of the genus Hyponomeuta ; more 

 than half of the year 1844 (from January to August) was devoted to 

 an Entomological expedition to Italy and Sicily, where a rich harvest 

 of observations was made, to be afterwards recorded in the pages of the 

 "Isis." 



The "Isis" of 1846, contained two important works from Zeller's 



