124 Mr. Baly on new Phytophagous Coleoptera. 



Masfosteflnis spcciosiif>', mihi. 



Sul>elongatus, sub-depressus, niger, iiitidus, femoribus anticis 

 quatuor abdomineque obscure piceis, thorace teiiuiter et remote 

 punctate, maculis quatuor rutis ornato ; elytris fere parallelis, 

 distincte et sub-crebre punctatis, pallide flavis, marginibus basali 

 et laterali, vitta humerali arcuata, fascia prope medium erosa 

 apiceque nigris. Long. 5 lin. 



Hab. Ecuador, collected by Mr. Buckley. 



Vertex finely and remotely punctured, space between the eyes 

 closely punctured, medial line smooth, impunctate, impressed at 

 its lower extremely with a deep longitudinal fovea, which ter- 

 minates in the deep transverse groove separating the face from 

 the clypeus, anterior border of the latter together with the edge 

 of the labrum rufous. Thorax twice as broad as long at the 

 base, basal margin obsoletely bisinuate on either side, the medial 

 portion obtusely truncate ; middle of anterior border dis- 

 tinctly sinuate, sides straight, converging from base to apex, 

 anterior and posterior angles produced laterally, acute ; iqiper 

 surface nitidous, very finely but remotely punctured ; on either 

 side, placed perpendicularly near the lateral border, are tAvo 

 irregular rufous spots. Scutellum broader than long, trigonate, 

 its apex broadly rounded. Elytra broader than the thorax, 

 parallel, the apex regularly rounded ; surface sub-depressed, dis- 

 tinctly and rather closely punctured, pale fulvous, the basal 

 margin, a narrow line along the lateral border, a curved vitta on 

 the humeral callus, attached at its base to the basal margin, 

 together with the apex black ; in addition, placed somewhat 

 obliquely about the middle of the disk, is a deeply crenulate 

 black fascia, which forms with its fellow a broad, slightly arched, 

 transverse band, stretching entirely across the two elytra ; the 

 apical patch, which occupies more thaii a fourth of the surface, 

 has its anterior edge irregular. 



Mastostethvs BucMeiji, mihi. 



Sub-elongatus, postice attenuatus, sub-depressus, rufo-piceus, 

 ore, antennis, capitis et thoracis maculis, tibiis tarsis(]^ue nigris ; 

 elytris nigris, tenuiter punctatis, fascia lata ante medium 

 alteraque augustiori ante apicem positis, fiavis. Long. 5| lin. 



Hab. Ecuador. 



Head finely and distinctly punctured, the punctures distant on 

 the vertex, crowded along the inner orbit of the eye; the mouth, 

 the palpi excepted, a longitudinal vitta on the front, a small spot 

 on the extreme vertex and another on either side at the base of 



