there is a narrow but distinict furrow on the lower half of the front. 

 Clypeus' closely punctured, its apex broadly rounded, fringed with long 

 white hair. The black mandibles a.re covered with long white hair. 

 Pronotum closely punctured except at the apex. Mesonotum with a 

 square of large,de.ep, clearly separated punctures surrounded by a smooth 

 space; the sides and apex have also a belt of punctures. Scutelhim 

 punctured, a smooth space on either side of the middle; the postscute- 

 llura rugose. Metanotum with three keels, the outer slightly converging 

 ';owards the apex; the area formed by them is twice longer than the width 

 at apex; the middle keel does not reaeh to the apex ; the area is not quite 

 smooth, the auter side of the metanotum is aciculated at the base; 

 the apical slope is opaque and thickly pubescent. Upper part of propleurae 

 smooth, the base and the lower half irregularly striated; mesopleurae 

 punctured, but not closely or strongly; the upper half of the metapleurae 

 with stout clearly separated striae, the lower more closely and much 

 more finely striated. First abdominal segment closely and strongly punc- 

 tured; there is a distinct crenulated tramsverse furrow near the apex; 

 the other segments are punctured and thickly covered with lougish white 

 pubescence, which is longest and thickest towq,rds the apex. Eadial 

 cellule short, wide, its apex wide, the apioal abscissa of the radius 

 bluntly rounded, the second transverse cubital nervure projecting 

 slightly beyond it; both the recurrent nervures are received shortly be- 

 yond the middJe; the second transverse cubital nervure regularly round- 

 ly curved, not sloped from the top towards the tranverse cubital. Length 

 5-6 mm. Oranada, Nicaragua. 



Three new species of Tiphia taken by Prof. Baker in Nicaragua are 

 all smaller than usual with the Central American species; they may be 

 separated thus: 



A. Radial cellule broad, bluntly rounded ait the apex; the second recur- 



rent nervure received nearer the middle than the apex; the apex 

 of the first abdominal segment with a distinct, crenuJa4ed, trans- 

 verse furrow ■ • • • crenulata sp. no v 



AA. Radial cellule narrow, sharp pointed at apex, projecting beyond 

 the transverse cubital; the first abdominal segment without a 

 crenulated furrow. 



B. Metanotum with two keels, the area tvrice longer than wide, smooth, 

 impunctate. Length 4-5 mm Granadensis Cam. 



BB. Metanotum with three keels, the area not twice longer than wide, 

 opaque, acicnlart;ed. Length 7 mm Marcosensis Cam. 



