DERMAPTERA SALTATORIA. 63 



ACRIDIUM OBTUSIFERUM. 



Fcem. Fulvum ; caput breve, fasligio fere rotundo, f route subpunctala ; 

 prothorax subcarinatus, conferlim et sublilissime punctalus, margine 

 poslico valde rotunda to ; proslerni spina incrassala, sub c lava ta ; 

 tibice posticce rufce, femoribus posticis multo breviores ; alee anticce 

 venulis plurimis transversis nigris ; alee posticce cinerece. 



Female. Tawny.. Head short ; tip of the vertex small, flat, nearly 

 round : front hardly oblique, slightly punctured, inner keels parallel, outer 

 keels diverging. Eyes piceous, nearly fusiform. Prothorax thickly and 

 very minutely punctured, narrower in front; a very slight keel and three 

 very slight transverse impressed lines; fore border and sides nearly 

 straight; hind border much rounded. Prostemal spine very stout, rounded 

 at the tip and thicker there than at the base. Hind femora as long as the 

 abdomen. Hind tibiiu red, much shorter than the hind femora ; spines 

 black towards the tips. Fore wings as loug as the body ; many of the 

 transverse sectors black. Hind wings cinereous ; veins black. Length of 

 the body 16 lines; expansion of the fore wings 36 lines. 



Nearly allied to A. innotabile; the spine is more globose at the tip. 



a. ? 



Page 610. 



Cyrtacanthacris differentialis, C. divorsifera, C. unilineata and C. 

 munda approach the genus Caloptenus in structure. 



Page 617. 

 Cyrtacanthacris plagiata. 

 a. Australia. 



Two specimens recorded as of this species are varieties of C. basalis. 



Page 620. 



Acridium literosum, A. decoripes and A. maculiferum are perhaps 

 more nearly allied to Caloptenus than to the typical form of Acridium. 



Page 622. 



Acridium marginale and A. pautherinum may be considered as the 

 types of a new genus; and A. stipatum, A. finale and A. genuale will form 

 another uew genus, which is allied to Oxya. A. exemptum represents 

 another new genus. 



Page 623. 

 Acridium occidentale. 

 occidentale, Scudder, Bost. Soc. Nat. Hist. xii. 339. 

 Napo or Marauon. 



Acridium labratum. 

 labratum, Scudder, Bost. Soc. Nat. Hist, xii, 339. 

 Napo or Marauon. 



