ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 717 



Injurious Insects.* — E. P. Felt reports on a variety of injurious 

 insects of the State of New York. Experiments were made to test the 

 behaviour of the house-fly or " typhoid fly " {Musca domestica), in 

 relation to light. It was found that the fly does not breed freely in 

 darkness, and it is advised that manure be kept in dark places. The 

 voracious caterpillars of the brown tail moth {Euproctis chrysorrlwia), 

 imported in New York State with French seedlings, the apple-worms of 

 the codling moth (Carpocapsa pomonella), the hickory leaf stem borer 

 (Acrobasis feltella), and many other injurious insects are dealt with. 



7- Myriopoda. 



British Millipedes. f — T. J. Evans records some oecological observa- 

 tions on the habits of some British Millipedes. In general, they feed on 

 decaying matter, animal and vegetable, though the Julids like fresh 

 vegetables. 



In Glomeris limbata (= marginatd) the breeding period extends from 

 March till the end of July. The male is much smaller than the female. 

 Copulation takes place by a head-to-tail apposition. A preliminary 

 loading of the male's copulatory appendages must take place. Egg- 

 laying is an interrupted process. The eggs are usually buried in the 

 loose soil near the surface, and always under cover of moss or dead leaves. 

 In a neat w T ay, carefully described, the egg is enclosed in an excremen- 

 titious shell. 



In Polydesmus complanatus the breeding period is as in Glomeris, but 

 copulation may occur in warm weather at any time. The copulation 

 lasts two days or more. About three weeks intervene between fertiliza- 

 tion and the nest-building. All the eggs are enclosed in a well-made 

 dome-shaped tent, the making of which is carefully described. 



In Julidas the nest is a much cruder structure, and the building in- 

 stinct of a much lower order. It is mainly made from the inside, the top 

 only being laid on from outside. 



During moulting the Julids and Polydesmids hide in a nest-like 

 recess, but Glomeris seeks no special protection. In studying Millipedes 

 it is important to accustom them first of all to moderate light. 



8. Arachnida. 



New Genus of Solifugse.J — S. Hirst establishes a new genus Barrella 

 from Biskra. It is closely allied to the Egyptian genus Barrus and to 

 Rhinippus from Asia Minor. It differs from Barrus in having the 

 anterior margin almost straight, and in having the spines of the head- 

 plate placed on a slight eminence, their bases being situated close 

 together. From Rhinippus it differs in the larger number of the spines 

 on the ocular tubercle, in the presence of spines on the head-plate, and 

 in the possession of a flagellum. 



Ten-legged Pantopod.§ — E. L. Bouvier calls attention to a new 

 decapod Pycnogonid, Pentapycnon charcoti g. etsp.n.. discovered by the 

 Charcot Antarctic Expedition. It is far apart from Decolopoda and 



* New York State Mus., Bull. 141 (1910) pp. 1-178 (22 pis.). 



f Ann. Nat. Hist., vi. (1910) pp. 284-91. % Tom. cit., pp. 3G7-8 (2 figs.). 



§ Comptes Rendus, cli. (1910) pp. 26-32. 



