436 PROCEEDINGS OF THE ACADEMY OF [June, 



blackish. Cephalic and median limbs speckled with bistre on the 

 cephalic aspect, shiny black on the caudal aspect. Caudal femora 

 Isabella color on the dorsal and lateral faces, with three distinct bars 

 of bistre on the dorsal face, one basal, one median, one caudo-median, 

 and one genicular, the median and caudo-median slightly suffusing the 

 lateral face, carinse and dorsal tubercles bistre, externo-ventral area 

 blackish, internal face and interne-ventral area scarlet vermilion, 

 genicular region suffused with bistre ; tibiae scarlet vermilion, the 

 proximal portion, a touch on the external face of the proximal 

 section, the entire external spines and the tips of the internal spines 

 blackish; tarsi scarlet vermilion. 



Measurements. 



Length of body, 33 mm. 



Length of pronotimi, S " 



Greatest width of pronotum, 5 '' 



Length of tegmen 30 " 



Greatest width of tegmen, 5.5 " 



Length of caudal femm-, 19 " 



This interesting new genus is represented only by the unique type. 

 It bears a great superficial resemblance to the Truxalid genus Machcero- 

 cera. 



LEPTOMERINTHOPRORA- n. gen. 



A member of the Xiphiolce, and probably related to Xiphiola Bolivar. 

 The general structure is, however, very different, and suggests a rela- 

 tionship to the Viler nee. 



Type. — L. hrevipennis n. sp. 



Head with the fastigium trigonal, slightly projecting beyond the 

 face; frontal costa precurrent. Pronotum with a distinct median 

 carina, humeral angles marked; transverse sulci three in number; lat- 

 eral lobes with the ventral margin emarginate cephalad and caudad. 

 Tegmina little exceeding the pronotum in length, apex rectangulate, 

 costal expansion marked. Prosternal spine erect, rather slender, blunt. 

 Interspace between the mesosternal lobes slightly transverse, inter- 

 space between the metasternal lobes subquadrate. Caudal til^ise with 

 seven spines on the external margin, no apical spine; nine spines on 

 the internal margin including the apical spine. 



' Ae-rof, thin; finptvdog, cord; ■Kpupa, face. 



