INVERTEBRATA, CRYPTOGAMIA, MICROSCOPY, ETC. 8 I i 



The Notodelphyidee.* — M. L. Kerschner describes two new genera 

 of the curious Copepod family Notodelpliyidfe, eacli including a single 

 species, which he names Parijplies longipes and Dorsipys uncinata. 



He prefaces his descriptions with some corrections of previous 

 notions as to certain points in the organization of these crustaceans. 

 He shows that the brood-chamber, which is usually regarded as con- 

 tained within the body-cavity, is formed, in the majority of Noto- 

 dolphyidpB, by a duplicature of the integument of the body j^roceeding 

 from the dorsal surface of the fourth and from the sides of the fourth 

 and fifth segments, but that in two genera this duplicature is inserted 

 even ujjon the second thoracic segment. He further indicates that an 

 unpaired ovary is present, and that the ova pass in strings into the 

 oviducts (formerly '■ ovaries "). 



The author confirms a part of Thorell's observations upon the 

 connection of the female generative organs, and, by the discovery of 

 the hitherto overlooked external genital aperture of the female, brings 

 back these organs to the general type of the whole order. 



In all the males observed he describes an unpaired testis, and 

 represents the envelope of the spermato^jhores as secreted by the wall 

 of the whole of the seminal duct. In the spermatoi^hore itself he 

 recognizes more layers than Thorell. He describes the type on 

 which the nervous system is constructed, and in oj)j)osition to 

 Buchholz, asserts the presence of olfactory nodes. 



New British Entomostraca. — The very curious translucent En- 

 tomostracon Leptodora Tiyalina, which was first found in the deep 

 Swiss lakes, and subsequently in other parts of Europe, has now been 

 found in England, first in the Olton Reservoir, near Birmingham (in 

 the masses of a minute alga, Clathrocystis), and subsequently in two 

 other localities, and was described | by Mr. Graham, the President of 

 the Birmingham Natural History and Microscopical Society, with a 

 drawing by Mr. Forrest.} 



In the Olton Reservoir (and subsequently in a second locality) 

 there was also found an Entomostracon, new to Britain, which was at 

 first supposed to be a new species and so described and figured in the 

 'Midland Naturalist ' § {" Daphnia 5«m7u "), but was subsequently 

 recognized by Professor Lankester as Hijalodaphnia Kahlbergensis of 

 Schodler. Only the female was found. 



Vermes. 



Segmentation in Worms and Pulmonates.|l — Dr. W. Mayzel, of 

 Warsaw, confirms Auerbach's observations as to the changes under- 

 gone by the nucleus in the dividing egg of Ascaris nigrovenosa and of 

 Strongyhis auricularis. In both these species, as well as in Limax 

 variegatus, he found the now well-known caryolytic figures — the spindle 



* 'Anzeig. Akad. Wisa. Wieii,' June 13, 1879; 'Ann. and Mag. Nat. Hist.,' 

 iv. (1879) p. 321. 



t « Midi. Nat.,' ii. (1879) p. 225. 



X See also Mr. Forrest's paper, ante, p. 82.5. 



§ ' Midi. Nat.,' ii. (1879) p. 217. 



II ' Zool. Anzeiger,' ii. (1879) p. 280. 



