484 



PAPILIOXID.E. 



Leucophasia gigantea. (Plate XXXVI. figs. 10, 11.) 



Leucophada gigantea, Leech, Entomologist, xxiii. p. 45 (1890). 



d" . White. Primaries with a large black spot on the second discoidal nervule, sometimes extending 

 upwards to the first ; a smaller one on the discocellular. Under surface of primaries with the 

 black spots faintly reproduced. Secondaries have an angulated suffused band indicated by a 

 blackish costal streak, and a curved mark between the discoidal and third median nervules ; a 

 short black bar at end of discoidal cell ; the venation is dark, especially on the secondaries 

 and outer margin of primaries. Head black ; collar yellow ; thorax black dusted with white ; 

 pectus sprinkled with yellow ; abdomen white. 



5 . Under surface of secondaries and apex of primaries tinged with yellowish, the black markings 

 more band-like, with the addition of a zigzag black submarginal line ; all these markings are 

 faintly seen through from above. 

 Expanse, S 48-62 millim., 5 72 millim. 



The specimens of the May brood are without black spot on primaries, the 

 colour is more creamy, and the venation appears more prominent. I propose 

 the name of immacula for this seasonal form (Plate XXXVI. fig. 10). 



The type is separated from the other species of Leucophasia by the large 

 black spot on primaries, and both forms are distinguished by the yellow collar. 



A fine series taken at Chang-yang, Central China, in May and August. I 

 have also received specimens from the province of Kwei-chow, Western China. 



Genus SERICINUS. 



Sericinus, Westwood, Traus. Ent. Soc. 1851, p. 173; Gcu. Diurn. Lcp. ii., App. p. 530 

 (1852). 



" Labial palpi nearly double the length of the head, nearly horizontally porrected, hirsute (not 



clothed with long ])ristles). 

 ^'Antenna} only slightly clavate, about thirty-jointed, gradually tiiickening. 



" Fore wings triangularly ovate, rounded at tho tip. Postcostal vein four-branched ; brandies 

 simple; the first and second arising before tho extremity of the discoidal cell, llie third from 

 its apex, and the fourth in the middle of tho space between its apex and tlic tip of Die wing. 

 Upper discocellular vein very short; the middle one much longer, annulati'd in the middle; 

 lower discocellular shorl-er, being almost contiguous with the exti'einity of the median vein. 



" Hind v;in(jH suboval, with the third branch of the median vein jiroduced into a very long and 

 narrow tail ; at tho base of the wing is a minute pricdiscoidal cell. 



"Type: ]\ip. telamori, Donovan." [Westirood, (>. I). L.) 



Sericinus telamon. (Plate XXXIII. figs. 7, s, var.) 



I'apilin telamon, Donovan, Tns. (.'liina, pi. xxvii. (i;:;. 1 (17!)H). 



Sericinus telamon, (iray, I'roc. Zool. Soc. Loud. 1(S52, p. 71 ; Cat. Lei). Iii.s. I'rit. Mus. 



