Of Bern are, after the Vatican glossary of Ansileubus, the oldest of which we know; there are others in several libraries, and printed editions by Mai, Heider and Cahier.
Heider, in Archie fiir Kunde 5sterreich.
Heider bryonic membranes are vestigial or entirely wanting.
In interpretations of Kowalevsky and Heider, and so on the whole do Orthoptera and Thysanura, as well as some others of the lower those of F.
Heider has suggested, however, that the apparent origin six segments.
Heider, Die Embryonalentwicklung von Hydrophilus piceus (Jena, 1889); W.
Heider, Handbook of the Comparative Embryology of Invertebrates (trans.
(From Korschelt and Heider, after Laurie.) lateral arteries and of the great median posterior arteries with the heart itself (fig.
(From Korschelt and Heider after Watase.) arteries.
[How the inversion of the nerve-end-cells and their connexion with the nerve-fibres is to be reconciled with the condition found in the adult, or with that of the monostichous eye, has not hitherto been explained.] (From Korschelt and Heider.) The great pericardial sinus is strongly developed in both animals.
This view has been accepted and supported by Professors Korschelt and Heider (16).
Further, it is pointed out by Korschelt and Heider that the hinder portion of the gut frequently acts in Arthropoda as an organ of nitrogenous excretion in the absence of any special excretory tubules, and that the production of such caeca from its surface in separate lines of descent does not involve any elaborate or unlikely process of growth.
For the loan of several figures from the translations published by them of the admirable treatise on Embryology by Professors Korschelt and Heider; also to the publishers of the treatise on Palaeontology by Professor Zittel, Herr Oldenbourg and The Macmillan Co., New York, for several cuts of extinct forms.
(From Korschelt and Heider.) quently take place (as in all Arthropoda) at the posterior extremity of the body, whilst excalation of somites may occur at the constricted areas which often separate adjacent " regions," though there are very few instances in which it has been recognized.
(From Korschelt and Heider, after Leuckart.) Peripatus, Diplopoda, Hexapoda and Chilopoda.
A A B C D ..a From Korschelt and Heider, after Barrande.
Korschelt and Heider, Entwickelungsgeschichte (Jena, 1892), ibique citata; 17.