1898] NOTES AND COMMENTS 159 



the median plane of the whole series of chambers. In the micro- 

 spheric form, as shown by Mr Hchlumberger, the arrangement at first 

 is that which characterises the genera Qiiinquelomlina during its 

 whole growth. In the young stage of the Bilocidino. and Trilocvlina 

 the plane dividing any chamber symmetrically is not identical with 

 the corresponding plane of the preceding chamber, but directed at a 

 definite angle to it. Mr Lister thinks that the megalospheric form 

 is produced asexually, and has a direct development, while the 

 microspheric form is produced sexually, and during its growth 

 repeats the arrangement characteristic of allied forms before it 

 attains the arrangement proper to its own genus. This is made 

 much clearer by Mr Lister in his paper with the accompanying 

 diagrams, and is on a par with tlie life history of Clavellina among 

 the ascidians. 



Missing Word Problem in " The Annals " 



We announced some months ago that the trustees of the British 

 Museum (Natural History) had commissioned one of the staff to 

 prepare a catalogue of moths. As this is to be a standard book of 

 reference for students and the public, we venture to hope that the 

 quotations of previous authors may be a little more explicit than 

 those in the twenty-sixth article of the February number of the 

 Annah Mag. Nat. Hid. Entomologists may be quite familiar with, 

 their vast literature, but the unfortunate student who is endeavouring 

 to acquire some knowledge of his subject may rack his brains over 

 such quotations as : — 



Wlk., XXX. 955. 



Koll. Hiig. Kasch, iv. p. 494. 



Eag. Nouv. Gen., p. 44. 



Feld. Reis. Nov., ph cxxxvi., fig. 40. 

 One would also like to see uniformity in the abbreviation of 

 author's names. Swinh., Schiff., Butl., and Fabr. convey some 

 meaning, but one cannot say the same of Wlk., WUgrn., Hmpsn. 



Forthcoming Congresses 



The International Congress of Physiologists is to be held in Cam- 

 bridge during the week beginning 2ord August, that is to say, con- 

 temporaneously with the Zoological Congress. We are very glad to. 

 learn that the Executive Committee of the latter Congress has been 

 taking more active steps than at first seemed probable to obtain 

 the co-operation of all British zoologists, in which name we include 

 not only Irish and Scottish, but those in India and the Colonies. To 

 enable this country to keep up the standard of hospitality that has 

 hitherto been maintained at this Congress, subscriptions are desired 



