ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 611 



there is a narrow canal opening to the exterior, three long hairs reach 

 the otolith but do not enter it (many penetrating it in Mysis), no nerve- 

 endings have as yet been discovered. Extirpation of the organ did 

 not result in any marked change in the movements of Antkura, which 

 is, however, very sensitive and lies inert when touched. 



Rare Thalassinid and its Larva.*— Millet T. Thompson describes 

 the external structure of the rare Naushonia crangonoides, of which only 

 two specimens have been collected, and the zoasa and mysis-stages of 

 the preadolescent development, which find their nearest counterpart in 

 those of another aberrant Thalassinid CaUiaxis adriatica. The author 

 regards CaUiaxis and Naushonia as aberrant forms, probably from 

 pre-Axiid stock, which have retained characters that ally them on 

 the one hand to the more primitive Axiidas and on the other hand 

 suggest relationship with genera of the Nephropsidea. Their evolution 

 has been along lines apart from that of most Thalassinids, especially in 

 the development of the very unusual larval forms. 



Antarctic Amphipods.f — Alfred 0. Walker reports on the Amphi- 

 poda collected during the expedition of the 'Southern Cross' (1889- 

 1900) to the Antarctic Seas. It is, he says, impossible not to be struck 

 with the general resemblance of the collection, both as regards the 

 number and size of individuals, and the great preponderance of Lyssia- 

 nassidae, to such a collection as might be found in the Arctic Seas ; and 

 with the equally great difference in these respects from any collection 

 that might be made under similar conditions of depth, &c. on our own 

 or on tropical coasts. The collection included 22 species (15 new) in 

 17 genera, of which Oradarea is new. 



Intermediate Form between Mysis oculata and Mysis relicta.f — 

 Eimar Lonnberg describes from brackish water in the southern part 

 of the Bothnian basin specimens of a Mysis which appear to be in size 

 and in details of antennae, telson, and uropods intermediate between 

 the marine M. oculata and the fresh-water M. relicta. 



Abyssal Lysiannassids.§ — E. Chevreux describes a number of new 

 Amphipods of the family Lysiannassida? collected by the ' Princess Alice ' 

 from the deep waters of the Atlantic and the Mediterranean. Six new 

 species are described, one of which, Paracallisoma alberti, is very re- 

 markable. Some of the captures were very interesting, e.g. of a Cyclo- 

 caris hitherto known only from Tahiti, but now found off the Cape 

 Verde Islands, and of a species of Hoplonyx from the Mediterranean. 



Anuropus and Bathynomus.|| — H. J. Hansen has made a re- 

 examination of the very remarkable abyssal Isopod Anuropus bran- 

 chiatus, known only by the single specimen dredged off New Guinea by 

 the ' Challenger.' He proposes to establish Anuropus Beddard as the 

 type of a new subfamily, Anuropinae, because the differences between 

 its mouth-parts and those of the Cirolanina? are so pronounced, that it 



* Proc. Boston Soc. Nat. Hist., xxxi. (1003) pp. 1-21 (3 pis.). 

 t .lourn. Linn. Soc. (Zool.), xxix. (1003) pp. 38-64 (5 pis.). 

 % Zool. Anzeis>\, xxvi. (1003) pp. 577-81. 

 § Bull. Soc. Zool. France, xxviii. (1903) pp. 81-07 (7 fi?s.). 

 [l T ourn. Linn. Soc. (Zool.), xxix. (1003) pp. 12-25 (1 pi.;. 



