74 NOTICES OF SERIALS. 



Steenstrup's recent observations on the development of the Hectocotylus in the 

 Decapod Cephalopoda, as well as in the Octopods, appeared sooner, it is 

 scarcely to be doubted that Van der Hoeven would have been led by them to 

 recognize distinctly a corresponding arrangement in the Tetrabranchia. 

 Troschel, who has inserted this present essay, translated, in the Archives of 

 Natural History, Vol. XXIII., remarks, with apparent reason, that the Spadix 

 of the male Nautilus, composed of four connate tentacles, presents an analogue 

 of the Hectocotylus arm. He considers the structure also to favour the views 

 of Valenciennes, who has compared the eight labial processes to the arms of 

 the Dibranchia, and the tentacles of the Tetrabranchia to the suckers in that 



order. 



Natuurkundige Verhandelingen van de Hollandsche Maatschappij der 



Wetenschappen te Haarlem. Transactions of the Scientific Society 



of Haarlem. Natural bciences. Second Series. 4to. Haarlem. 

 Part XII. Prize Essays. A.D. 1856- 



(Schultze) The Embryology of Pet romyzon planeri; with eight plates — pp. 50. 

 The careful and minute observations of the author on the early stages of develop- 

 ment of this Lamprey, compared with those of Kemak on the Embryology of the 

 Frog, reveal many points of agreement between the two, and differences from what 

 we know in respect to other fishes. These differences partly result from the mode 

 of segmentation of the vitellus, which is total, as in the Amphibia, and accompanied 

 by the appearance of a cavity of segmentation, to which we know as yet of nothing 

 quite analogous in other fishes ; the embryology of the cartilaginous fishes, however, 

 seems to require further examination with reference thereto. There is an analogy 

 to the frog again in the first formation of the alimentary cavity ; and the inner 

 Epithelium of the secondary, and not of the primary cavity, is clothed with cilia, 

 which are persistent ultimately, as Leydig had before observed. Other differences 

 between Petromyzon and fishes in general are connected with its very simple 

 organization ; thus the eye appears first at a late period, and as a simple pigment 

 spot, and the brain presents originally no trace of divisions. The observations 

 ended with the first indication of the cranial cartilages, and too early to trace the 

 stages through which the eye attains its perfect organization in Petromyzon. 

 Other singularities in the development are the remarkable gland of the lower jaw 

 (Glans thymus), and the Ciliary organs under the Chorda above the heart. 



Both the prize essays in this part are written in German, although published in 

 the Transactions of a Society in Holland. 



Handelingen der Nederlandsche Entomologische Vereeniging. Trans- 

 actions of the Entomological Association of the Netherlands. 4to. 

 Leiden. Vol. I. Part IV. 1857. 



Report of the Twelfth Annual Meeting of the Association at Leiden, in July, 

 1856 — p. 79-109. Principally taken up with an essay by Van Bemmelen on the 

 instances recorded of great flights of insects of different orders, but especially 

 Neuroptera. Libellula quadrimaculata has composed the chief of those noticed in 

 the Netherlands. Mulder criticized Bouche's description of the larva of Elater 

 segetis. The correct description and figure which Curtis has given of it in the 

 Reports of the English Royal Agricultural Society appears unknown to the 

 censor, not having been cited in the Catalogue of Coleopterous Larvae by 

 Chapuis and Candeze. Graaf gave an account of the ravages of Cryptorrhyn chus 

 lapathi, which attacks willows and poplars ; also of the varieties of Libellula 

 quadrimaculata. De Gavere noticed the peculiarities of the Insect Eauna of 

 Groningen. Maitland described an intestinal parasitic mite, Gamasus saccicola, 

 inhabiting the abdomen of Xylocopa latipes in Java. 



DUTCH INDIA. 



Natuurkundig Tijdschrift voor Nederlandsch Indie. Journal of 



Natural Science for Dutch India. New Series. 8vo. Batavia. 



Part IV. A.D. 1854. 



(Krajenbrink) Matter, Force, Life, and Spirit ; a contribution to the Develop- 



