646 SCIENCE PROGRESS 



no other. 3. Chromosome pairing is dependent upon the 

 qualitative (physico-chemical) similarity of the chromosomes. 



The Lepidoptera furnish ground for a series of publications : 

 " New South American Arctiadce " {Ann. and Mag. Nat. Hist. 

 July 191 6), and " New Delias and other Butterflies from 

 the East " {ibid), both by Joicey and Talbot; "Descriptions 

 of new Pyralidce of the sub-families Epipaschianaz, Chrysangince, 

 Endotrichince, and Pyralince " (ibid.) and " Descriptions of 

 New Pyralidce of the sub-families Epipaschiance, Chrysangince, 

 Endotrichince, and Pyralince " (ibid. Oct. 191 6), both by 

 Hampson ; " New Indo-Malayan Lepidoptera " (ibid. Aug. 

 191 6), and " New Species of Butterflies and Moths from Aus- 

 tralia, Africa, and the Indo-Malayan Region " (ibid. Dec. 1916), 

 both by Swinhoe. Hawkes has found in testing " The Effect 

 of Moisture upon the Silk of the Hybrid Philosamia (Attacus) 

 ricini (Boisd.) $ x Philosamia cynthia (Drury) $ " (Jour. 

 Exper. Zool. July 19 16), that in all but two cases the white or 

 fawn cocoons become various shades of red-brown when 

 placed in a very moist atmosphere. 



Records of Coleoptera occur in " On New Neotropical 

 Curculionidse " by Marshall, and " On the Lamellicorn Coleop- 

 tera of Lanat Island " by Arrow (Ann. and Mag. Nat. Hist. 

 Dec. 1916). 



Vertebrata. — Fish are treated by Regan in " The British 

 Fishes of the Sub-family Clupeinae and Related Species in 

 other Seas " and " A new Loricariid Fish of the Genus Cyclo- 

 pium from Ecuador " (both in Ann. and Mag. Nat. Hist. July 

 1916), and by Boulenger in " Description of a new Fish of the 

 Genus Barbus from the Niger " (ibid. Dec. 191 6). Cockerell 

 gives a description of " The Scales of the Brotulid Fishes " 

 (ibid. Oct. 19 1 6). 



A " Description of a New Genus of the Family Lacertidce 

 from Central Africa " is provided by Boulenger (ibid. July 

 1 91 6). Goodrich puts forward suggestions " On the Classifica- 

 tion of the Reptilia " (Proc . Roy . Soc . B, 615, 191 6), in which he 

 regards them as not a true monophyletic group but a grade of 

 organisation, and bases the classification mainly on the pre- 

 sence of a hook-shaped metatarsal and the sub-division of the 

 aortic trunk. Sollas and Sollas have extended their observa- 

 tions " On the Structure of the Dicynodont Skull " (Phil. 

 Trans. Roy. Soc. B, No. 346, 191 6) by the examination of a 



