572 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvii. 



The specimen measures as follows: 



mm. 



Length of body 80 



Length of pronotum 31 



Greatest width of pronotum 6. 5 



Length of tegmina 47 



Greatest width of tegmina 18. 5 



Length of anterior femora. - 22. 5 



STAGMATOPTERA SANCTA (Stoll). 



1787. [_Mantis\ sanda Stoll, Natuurlyke Afbeeldingen en Beschry vingen ; De 

 Spooken, pp. 52, 78, pi. xvii, fig. 63; Surinam. 



■ One female; Para, Brazil. [A. N. S. Phila.] 



STAGMATOPTERA INSATIABILIS, new species. 



Type. — Female; Turrialba, Costa Rica. (Schild and Burgdorf.) 

 [Cat. No. 6954, U.S.N.M.] 



This form is allied to S. sancta Stoll, but differs in the armature of 

 the anterior coxfe, the character of the pronotal dilation, and the spine 

 structure of the same portion of the body. 



Size large; form robust, abdomen depressed. Head slightly trans- 

 verse; eyes subovoid when viewed laterally; vertex very slightly 

 arcuate; ocelli very small, triangularly disposed; facial shield trans- 

 verse, the superior margin arcuate, lower margin subtruncate; 

 anteunfe filiform, hardly exceeding the depth of the head in length. 

 Pronotum moderately elongate; collar broad ,^ very gradually expand- 

 ing into the slight supracoxal lobes; shaft subequal in width, supplied 

 with a median carina which is very distinct anteriorly and obsolete 

 posteriorly; lateral margins of the collar and shaft supplied with stout 

 moderately long dentiform spines, which become weak and low toward 

 the posterior margin of the shaft, lateral margins of the supracoxal 

 lobes with the spines shorter than either anteriorly or posteriorly. 

 Tegmina elliptical, costal margin rather strongl}^ arcuate, sutural 

 margin moderately arcuate, apex rounded anteriorly and rectaugulate 

 posteriorly; costal field broad, equal to one-third the width of the 

 tegmina, irregularly reticulate; stigma longitudinal, narrow. Wings 

 slightly exceeding the tegmina in length when in repose; costal margin 

 straight, except apically, where it is strongly curved to meet the 

 very obtuse-angulate apex; anterior ulnar vein bifurcate. Abdomen 

 depressed, fusiform. Supraanal plate rotundate, a slightly marked 

 cereal emargination. Cerci moniliform, hirsute, apex blunt. Sub- 

 genital plate large, rounded; median portion produced, compressed, 

 and with a deep median incision. Anterior coxte slightly exceeding 

 half the length of the pronotum, lower margin bearing five large den- 

 tiform spinous processes, between which are placed a much smaller 

 process of similar shape; femora slightly exceeding the coxte in length, 

 external face concave, anterior portion of the external margin bearing 



