TIIE CANADIAN ENTOMOLOGIST. 107 



A NEW MANTIS OF THE GENUS STAGMATOPTERA FROM 



NICARAGUA. 



BY JAMES A. G. REHN, PHILADELPHIA, PA. 



Stagmatopiera typhon, n. sp. — Type, ? ; San Marcos, Nicaragua 

 (Baker). Acad. Nat. Sci., Phila. 



Allied to sancta and birivia, StoU., and itisatiabiiis, Rehn. From 

 the saiicta-insatiabilis type it differs in the shorter and broader tegmina 

 and wings, the wider and more rotundate expansion of the pronotunij the 

 deeper head and slenderer anterior femora. From the birivia type it can 

 easily be distinguished by the extremely short and broad wings and 

 tegmina, the more arcuate expansions and more compressed shaft of the 

 pronotum, as well as the absence of distinct maculations on the tegmina. 



Size large ; form robust. Head with the anterior aspect trigonal, 



about three-fourths as deep as broad ; superior margin very slightly 

 arcuate ; facial shield transverse, almost twice as broad as high ; superior 

 margin very obtuse-angulate, the point of the angle depressed ; eye$ 

 prominent, rounded, sub-pyriform in basal outline ; antennte very small, 

 but slightly more than half the length of pronotum, filiform. Pronotum 

 wiih the expansion moderately inflated, gradually curving anteriorly to the 

 rather narrowly-rounded anterior margin, curving rather sharply 

 posteriorly to the compressed, trigonal shaft; shaft with the compressed 

 portion about equal to half the entire length of the pronotum, margins 

 slightly expanding posteriorly; posterior margin rounded; median carina 

 distinct on the posterior portion of the shaft, gradually becoming lower 

 anteriorly, until on the collar it is represented by a distinct sulcus ; 

 margins of the anterior portion of the dilation with distinct but low teeth, 

 which gradually decrease in size posteriorly, until on th6 posterior portion 

 of the shaft they are obsolete. Tegmina coriaceous, short and broad, the 

 greatest width being about one-half the length ; costal margin straight, 

 except the basal swell and a very slight median "sinuosity ; posterior 

 margin very broadly and gently arcuate ; apex very blunt, broadly 

 rounded, the posterior curve more arcuate than the anterior; costal field 

 broad, equal to one-third the median width of the wing ; stigma small, 

 longitudinal, fusiform. Wings very broad, but slightly narrower than 

 long, posterior and apical margins of the wing eveiily arcuate, except for a 

 slight emargination separating the radial portion of the wing. Abdomen 



