1 



ovo," in which six stages are recorded, the last being styled the 

 Nauplius stage ; but the links between this stage and the free 

 state of the young animal, in which it resembles its parents, as 

 shown by Herold, as well as the Zona condition, remain yet 

 unobserved. 



A memoir on the respiration of land crabs, by M. Jobert, 

 appears in the Annales Sci. Nat. (ser. vi. vol. iv.). 



A note, by Dr. H. Wayenbergh, on a mortal case occurring 

 from the bite of Segestria perjida, Walck., is published in the 

 ' Boletin de la Academia Nacional de Ciencias' (vol. ii., Cordova). 



A memoir, by M. Plateau, on digestion and its organs in the 

 Phalangiidce, is noticed in the Annals Nat. Hist, for March 

 last; as is also an article, by M. Magnin, on the power of 

 fasting during long periods possessed by some species of 

 Acaridte. 



Descriptions of a number of coleopterous monstrosities are 

 published, with figures by Dr. Kraatz, in the Deutsch Entomol. 

 Zeitschr. for 1877, consisting of malformations, retarded develop- 

 ments, or duplication, or even triplication, in some portions of 

 the limbs. 



A memoir on the anatomy of the digestive apparatus of the 

 Orthoptera, by Wilde, appears in the Archiv. f. Naturg. (43rd 

 year, Heft 2). 



An abstract of Mr. Wood-Mason's observations, on the de- 

 velopment of the antennae in the pectinicorn MantidcB, appears 

 in the Proc. Asiat. Soc. of Bengal, December, 1876, showing 

 the mode in which the bipectinations of the male insect are 

 developed at the last shedding of the chitinous membrane of 

 the pup SB. 



Mr. J. Wood-Mason has also given a short notice of a new and 

 remarkable species of Phasmidce, from Borneo, which appears to 

 possess, in the perfect state, structures which seem fitted both 

 for aerial respiration and respiration by tracheal gills, in the 

 shape of small, oval, ciliated plates, such as co-exist in Ptero- 

 narcys regalis. For this curious insect he proposes the name of 

 Cotylosoma dipneusticum (Ann. Nat. Hist., 5 S., vi. j). 102). 



A memoir upon the generative organs of the EphemeridcB has 

 been presented to the Academy of Sciences, Paris, by M. Joly, 

 of which an account is given in the ' Comptes Rendus,' October, 

 1876 ; noticed in Annals Nat. Hist., February, 1877. 



