152 THE ENTOMOLOGIST. 



Z. trifolii lutescens. Entom., 1878, 102. 



Choerocampa porcellus lutescens. Entom., 1878, 1G9, and fig. 



Calligenia miniata lutescens. Ent. Mo. Mag., 1879, ] 10. 



Sesia culiciformis lutescens. Entom., 1878, 102. 



Arctia caia lutescens. Entom., 1887 (S. Lond. Ent. Soc). 



Callimorpha Jtera lutescens, Stgr. Proc. S. Lond. Ent. Soc, 

 1885, 20. 



C. dominula rossica, Kol. Stand. Cat., 1871. 



Doubtless many other cases will occur to anyone, in which 

 the same method might be adopted ; for instance, deletus may be 

 used for complete, and suhdeletus for partial, suppression of 

 spots or banding ; pallescens for pale forms, such as are found in 

 the Satyridae ; siiffusus, ohscurus, nigrescens, and nigei' for different 

 degrees of suffusion or of melanism ; major and minor for large 

 and small forms, say one-third or more larger or smaller than 

 the type. 



Bedford Park, Chiswick, May, 1887. 



[We insert Mr. Cockerell's suggestions without necessarily 

 endorsing them. The trinomial system has some objections; 

 but the subject is well worthy of discussion, and will doubtless 

 receive the attention it deserves from our readers. — Ed.I 



NOTES ON SILK-PROD QCING BOMBYCES— 1885. 



By Alfked Wailly. 



(Merabre-Laureat de la Societe d'Acclimatation de France.) 



(Continued from p. 131.) 



Antliercea pernyi, G-uerin-Meneville. The Chniese Oak Silk- 

 worm. — Moths emerged from cocoons from the 24th of April till 

 about the end of June, a very unusual thing. In May, which is the 

 ordinary month for the moths to emerge in northern countries, 

 very few moths emerged in consequence of cold weather ; it was 

 the same with respect to some other species. Eggs of pernyi, 

 received from Spain on the 22nd of April, hatched on the 20th of 

 May. The rearings took place in the garden, and the larvae, 

 together with those of the hybrid roylei-pernyi, had the same fate 

 as those of yama-mai. 



I mentioned in my report for the year 1884 that a hybrid had 



