Mr. A. G. Butler on new Blattarije. 387 



Ankafana, Betsileo, Madagascar. 



A female form also occurs, which I suppose to be merely a 

 colour variety, in which nearly the whole of the abdomen is 

 bright castaneous. 



The following genus seems to me to be nearly allied to the 

 FanestMa forceps of Saussure; but it is totally destitute of 

 tegmina, which, according to M. Saussure (and as figured by 

 him), are rudimentary, but nevertheless present in the female. 



DiCELLONOTUS, gen. nov. {SUeWa, v(OTo<i). 



Pronotura smooth, transverse, witli the anterior margin 

 excavated in front and more or less produced into projecting 

 horns ; head concealed by the pronotum ; antennaj moniliform, 

 rather short, not extending quite to the middle of the body ; 

 entire body above with a distinct marginal carina ; supraanal 

 plate very wide, transverse, with well-defined lateral posterior 

 angles, its posterior margin scarcely perceptibly undulated in 

 the middle ; cerci extremely short and corneous. 



3. DiceUonofus lucanoides, sp. n. 



$ . Above deep maliogany-red, clouded and bordered with 

 black, the posterior abdominal segments wholly black ; below 

 black, the femora reddish, the ventral segments with deep 

 reddish posterior borders. Pronotum tumid, depressed in 

 front, with the back of the depression plicated, and its surface 

 bearing on each side a distinct embossed pustule ; the anterior 

 margin slightly convex in the centre, but deeply excised in 

 its relation to the humeral angles, which are produced for- 

 w'ards into two long, robust, incurved, obtuse horns, keeled 

 along their upper edge, which is a little tuberculated at its 

 extremity, and with their inner surface transversely indented 

 watli irregular striffi ; lateral margins strongly carinated and 

 slightly rugose; posterior margin nearly straight, slightly 

 convex ; meso- and metanotum transverse oblong, of nearly 

 equal width throughout, smooth, with rounded carinated 

 lateral margins, near to which there is a longitudinal elon- 

 gate triangular shallow depression. Abdominal segments with 

 carinated lateral margins ; coarsely rugoso-punctate at the 

 sides, the first to sixth segments in the dorsal region and a 

 patch near the front of the seventh segment almost smooth ; 

 the first and second segments with convex posterior margin ; 

 the anterior border of the segments is represented by a ribbon- 

 like continuation of the lateral carina, which, on the seventh 

 segment, is longitudinally finely striated at the sides. Head 

 almost cordiform, irregularly striolate. Legs extremely power- 



