716 SUMMARY OF CURRENT RESEARCHES RELATING TO 



Bermuda Islands.*- — Addison E. Verrill gives an account of these 

 islands — dealing with physiography, meteorology, products, fauna and 

 flora. He discusses many subjects of great interest in connection with 

 the changes of the fauna and flora for which man is responsible : e.g. 

 the effects of hogs and wood-rats, of de-foresting, of introductions and 

 eliminations. He deals with the extermination or partial extermination 

 of native birds, the partial extermination of the whales, the extermina- 

 tion of breeding sea-turtles, the decrease of certain fishes and molluscs, 

 the introduction of all sorts of animals from rats to earthworms. The 

 whole story is one of great astiological as well as practical interest. 



INVERTEBRATA. 



Microscopic Freshwater Animals of Balaton.f — E. von Daday 

 gives a list of 209 microscopic freshwater animals obtained in the survey 

 of the freshwater basins around Balaton. They range from Protozoa to 

 Arachnoidea, and include several new species, and notably the new 

 Cladoceran genus Wlassicsia. 



Mollusca. 



«*■ Cephalopoda. 



Remarkable Young Form of Cephalopod.J — C. Chun describes 

 some small Decapods, from 1 mm.-lO mm. (including extended tentacles) 

 in length, in which two of the tentacles have fused throughout their 

 entire length to form a proboscis-like process. No hint of this has been 

 seen in any Decapod ; it must be a juvenile character — probably, how- 

 ever, of a hitherto unknown genus. The name Rhynchoteuthis is proposed . 



Statocysts of Cephalopods.§ — R. Hamlyn-Harris gives a detailed 

 description of the large and highly evolved statocysts of Cephalopods. 

 Besides the well-known principal macula statica— the relatively large 

 sensory terminal plate on which the statolith rests- — the author has. 

 found two other macula?, which he calls macula neglecta, anterior and 

 posterior. After describing the general structure in representative types 

 of Octopods and Decapods, the author gives an account of the minute 

 structure, and contributes a few embryological notes. 



Loligo media. || — L. Joubin figures a series of this small pelagic 

 squid, which has received many specific names. He seeks to show 

 that the numerous synomyms refer to different growth-stages of the 

 same animal. The growth changes differ according to the sex, and the 

 sexual differences 'penetrate even into the ' pen,' which is relatively 

 shorter in the females. 



Hetroteuthis weberi.1T- — L. Joubin describes this new species from 

 the Dutch " Siboga " expedition. It differs from H. dispar, the only 

 other known species of the genus, in being relativelyshorter and broader, 

 in having shorter arms with the suckers touching, in having a larger fin 



* Trans. Connecticut Acad., xi. (Centennial vol.) Part TI. (1901-2) pp. x. and 

 413-956, pis. lxv-civ. 



t Zool. Jahrb., xix. Heft i. (1903) pp. 37-9S (2 pis. and 3 figs.). ; 

 j Zool. Anzeig., xxvi. (1903) pp. 716-17 (3 figs.). 

 § Zool. Jahrb., xviii (1903) pp. 327-58 (5 pis. and 10 figs.). 

 || Trav. Sci. Univ. Rennes, i. (1902) pp. 165-9 (1 photograph). 

 1 Trav. Sci. Univ. Rennes, i. Fasc. iii. (1902) pp. 361-4 (4 figs). 



