Dr. Malcolm Burr’s Revision of the Genus Diplatys. 31 
6. Diplatys thoracieus, Dohrn 
Cylindrogaster thoracicus, Dohrn, (1868) p. 59. 
5 5 Borm., (1900*) p. 12. 
+ e Kirby, (1904) p. 2. 
This Brazilian species may be recognised at once among 
all its congeners, by the long and narrow pronotum, which 
is nearly twice as long as broad, with parallel sides. The 
head is humid, with depressed occiput and sharp postocular 
keels. 
It is apparently a rare species. Dohrn records it from 
Rio de Janeiro, and there is a broken male from Espirito 
Santo in the Brunner collection in Vienna. 
Dohrn states that the type is in the Helsingfors 
Museum. 
7. Diplatys gracilis, Stal 
Cylindrogaster gracilis, Stal, (1855) p. 350. 
‘ » Dohrn, (1863) p. 58. 
5 al Borm., (1900?) p. 11, fig. 8. 
» 3 Kirby, (1904) p. 2. 
. ¥ Burr, (1909?) p, 254. 
Diplatys gracilis, Stal, (1860) p. 306. 
Cylindrogaster sahlbergi, Dohrn, (1863) p. 59. 
iB i Borm., (19007) p. 12. 
This is a second Brazilian species, resembling the former, 
but with shorter pronotum, and dull red colour. I sink as 
synonymous D. sahlbergi, Dohrn, which differs only in 
trifling variation of colour: de Bormans (l.c.) suggested 
their specific identity. The globular fourth, and pyriform 
fifth, antennal segments are distinctive. 
It is recorded from Rio de Janeiro, Theresopolis, and 
Espirito Santo. 
8. Diplatys jansoni, Karby 
Cylindrogaster jansoni, Kirby, (1891) p. 507. 
Diplatys jansoni, Borm., (1893) p. 2, Pl. I, fig. 102, 
(1900?) p. 9. 
Diplatys gansoni, Kirby, (1904) p. 2. 
a 2 Burr, (1904?) p. 278, 280. 
It is a handsome red and black species occurring in 
Central America. It is closely allied to the following. 
The head in both these species has the same structure 
as in the Ethiopian D. aethiops, that is, smooth and humid, 
