286 Mr. Gib J. Arrow’s List of 
Clypeus rather long, narrow in front. Mentum large, broad, hol- 
lowed beneath and obtusely angulate in front. Terminal joint 
of the labial palpi broad and securiform. Maxilla unarmed, densely 
hairy, with the inner lobe short, the outer lobe rather slender. 
Maxillary palpus with the last joint triangular, not enlarged nor 
transverse. Mandible sharply bidentate. Prosternum _ broadly 
produced behind. Legs strong, with the tibiae rather clavate, the 
three basal joints of the tarsi broadly lobed and the fourth minute. 
3g. Front and hind tibiae strongly curved. 
Type, P. angusta, sp. n. 
This genus is nearly related to Megalodacne, from which 
it differs principally by the possession of a pair of stridula- 
tory files upon the vertex of the head. These are placed 
so far back as to be visible only when the head is drawn a 
little out of its cavity, the files not extending forward as 
far as the hinder margin of the eye. The tarsi are very 
broadly dilated and the maxillary palpi have a securiform 
terminal joint, which is not enlarged nor distinctly 
transverse. 
Episcapha stridulans Gorham is a second species of the 
genus, and another is Megalodacne curvipes Fairmaire 
(Nyasaland). In the latter species, as in P. angusta, the 
stridulatory files are placed far apart, but in P. stridulans 
they are close together. 
1. Phonodacne angusta, sp. n. 
Nigra, nitida, singulo elytro lunula humerali ad basin attingenti, 
postice tridentata, fasciaque anteapicali intus abbreviata, pallide 
flavis, ornato; elongata, convexa, capite fortiter punctato, clypeo 
angustato, crebrius punctato, oculis mediocris, pronoto sat crebre 
punctato, marginibus Jateralibus laevigatis, basi utrinque fortiter 
et profunde punctato, lateribus subtiliter arcuatis, antice leviter 
approximatis, angulis anticis acutis, posticis rectis; scutello lato; 
elytris subtiliter seriato-punctatis, postice laevigatis; prosterni 
dimidio antico crebre punctato, margine antico medio minute 
tuberculato : 
6, tibiis anticis et posticis arcuatis. 
Long. 20 mm.; lat. max. 8 mm. 
Urrer Mexone: Pak Lay (Aug.), Ban Pan (May). 
This is larger and more elongate than P. stridulans, with 
similar but rather reduced markings upon the elytra. The 
head and pronotum are rather closely punctured, the 
