PLATYLABIA. SPniXGOLABIS. 127 



common to the two species, if they are distinct, for we find ahnosfc 

 identically the same form in the females of SpMngolahis {Cha'to- 

 spania) volcana. Burr (Madagascar), and an approach to it in 

 several species of Sjutratta and an allied genus. 



77. Platylabia nigriceps, Xirh>/.* (Fig. 43.) 



Platylabia nigriceps, Kirbj/, (91) p. 518, (04) p. 27 ; Borm. (00-) 



p. 74. 

 Platylabia faUax, Bonn** (94) p. 380 ; Kirby, (04) p. 22. 



Head blackish brown. Elytra and wings well-developed, shining 

 black, coriaceous. Abdomen reddish chestnut. Pygidium of d" 

 long and narrow, very prominent, posterior margin straight, with 

 three little tubercles, one at each angle and one in the middle ; 

 2 similar to the d" , but the apex is emarginate and only the 

 tubercles at the angles remain. Branches of the forceps of 

 the c? trigonal and remote at the base, nearly straight ; just 

 beyond the middle on the inner margin is a strong sharp tooth 

 directed apically. In the $ the bi-anches are parallel, the inner 

 margin dilated into a flat plate, with a crenulated edge extending 

 from one quarter of the length to about three-quarters. 



.^ 2 



Length of body 7*5 mm. 7"5 mm. 



„ forceps 2-5 „ 2-25 „ 



Burma : Karen-ni, Keba District, 3000-3700 ft., v./xii. (Genoa 

 3Ius.). 



Also recorded from New Guinea. 



Tijj^e of nigriceps in the British Museum ; of fallacc in the 

 Genoa Museum. 



De Bormans at first discriminated P. fallax from P. nir/)-l,cep)s, 

 but afterwards admitted their identity. The latter is here included 

 as a distinct species because the case is not yet quite proven in 

 favour of its inclusion as a varietal form of P. ilioracica. From 

 the description and from syntypes of P. fallax (=mgriceps) in the 

 author's possession, it is impossible to discriminate the females 

 of P. nigriceps from those of P. thoracica. The pygidium difters 

 so little in the males, that it is almost certain that P. fallax 

 and P. nigriceps are synonyms of P. thoracica, and very likely 

 P. gestroi is the female. 



Genus SPHINGOLABIS, Bormans. 



Chfetospania, A'«rsc/?, (8G) p. 87 (nov;. syn.). — Ti/pe : Ch. inornata^ 

 Karsch (Madagascar). 



Type, Sphingolahis farcifer, Borm. (84^) p. 194 {= Sparatta 

 semifidva, Borm.). 



Body depressed. Antennae with 12 segments ; third segment 

 gently clavate, fourth ovate, nearly as long as third, the rest 

 pear-shaped. Head smooth, rather depressed, sutures obsolete. 

 Pronotum nearly square. Mesosternum transverse, truncate. 



