272 Mr. R. Shelford’s Studies of the Blattide. 
be with Archiblatta, Vollenh., as shown by the unarmed 
femora and the structure of the tarsi; the form of the 
“epipleuron ” is very different, in Archiblatta this is formed 
by a simple deflexion of the anterior part of the tegmen, 
whereas in Miroblatia the area between the mediastinal 
and radial veins is deflexed, but the mediastinal field itself 
is in the same plane as the disc of the tegmen, forming in 
repose a sort of flange; I know of no parallel modification 
of the tegmina in other Blattide. The method of wing- 
folding in Miroblaita is met with again only amongst the 
Corydiine. 
Miroblatia petrophila, sp. nu. (Plate XIV, figs. 4, 4a.) 
¢. Elongate ovate ; dark castaneous. Head fuscous, front concave, 
lower face rugose, clypeus flavo-testaceous, mouth parts castaneous ; 
antenne longer than total length of body, a broad white annulus 
before the middle, occupying twenty-one joints. Pronotum cas- 
taneous, dise with strong elevated ridges in the form of a horseshoe, 
giving off anteriorly two short diverging branches and laterally two 
backwardly directed branches which are less strongly marked, a 
median carina on the anterior cucullate part of the pronotum ; area 
between the limbs of the horseshoe rugose, ridges and adjacent parts 
black, a pair of orange spots on each side of the anterior carina and 
another pair on each side of the limbs of the horseshoe-shaped ridge ; 
scattered about the surface of the pronotum are numerous small 
tubercles bearing erect sete. ‘Tegmina castaneous, the radial vein 
black. Wings flavo-hyaline, marginal field and apex suffused 
with flavo-castaneous. Abdomen dark castaneous, paler at the base 
above. Legs dark castaneous, apices of femora flavo-castaneous ; 
formula of apical spines 7, 4, }, no genicular spines on anterior 
femora. 
Total length 40 mm. ; length of tegmina 26 mm. ; pronotum 
13mm. x 16 mm. 
Mr. SANTUBONG, 2500 feet, amongst rocks. One example. 
About half-a-dozen specimens of this cockroach were 
captured by a native collector in August 1900; he stated 
that they ran with great activity and that they were 
incapable of flight. 
Genus CoryDIA, Serv. 
Corydia caerulea, n. sp. 
¢d. Brilliant blue with meéallic reflections. Head, pronotum and 
anterior margins of tegmina and wings pubescent, antennze fuscous, 
