358 Mr. C. O. Waterliouse on new 



species known to me. The head behind the frontal tubercle 

 is impunctate, but finely punctured on each side. Tlie thorax 

 has the punctuation veiy fine and not verj close ; owing to 

 the slight discoidal impression and the common anterior 

 declivity there is a very slight swelling near the front mar- 

 gin. The metasternum is somewhat flattened, very delicately 

 punctured (almost smooth), except the anterior portion of the 

 intercoxal process, where the punctures are much stronger and 

 closer, and at the sides, where the punctures are very strong 

 but moderately separated ; there is a very lightly impressed 

 median line. The pygidium is rather closely and very dis- 

 tinctly punctured. The anterior tibiae have four teeth 

 (including the apical porrect one). The intermediate femora 

 are very delicately punctured beneath, but have some strong 

 punctures at the apex. The posterior femora are elongate and 

 subparallel, a little enlarged close to the base and then slightly 

 narrowed, the upper apical angle produced into a strong trian- 

 gular tooth. 



Ontherus Bridgesi, sp. n. 



Elongatus, sat depressus, niger, nitidus ; capita vertice utrinque aub- 

 tiliter punctulato, tuberculo brevi acuminato instructo ; thorace 

 ad latera tenuiter punctato, antice subito declivi ; elj'tris fortiter 

 punctatis, striis punctatis, interstitiis convexis l8e\ibus ; meta- 

 eterno medio Isevi, postice impressione sat maguo, lateribus punc- 

 tatis ; pedibus longis, tibiis anticis quadridentatis, dentibus 

 duobus apicalibus distantibus, f emoribus posticis elongatis, apieem 

 versus pauUo latioribus, subtiliter punctulatis, angulo apicali 

 superior! acute dentiformi, angulo inferiori angulatim dilatato, 

 tibiis gracilibus. (PI. XI. fig. 12.) 



Long. 7|, lat. 4 lin. 



Hah. Bolivia [Bridges). 



This species has the elongate form of the preceding, but it 

 is still more depressed, the elytra are more deeply striated, 

 moderately strongly punctured, and the interstices are more 

 convex ; the eighth or marginal stria as it approaches the 

 shoulder emits a short branch, which stops abruptly at about 

 one third from the base of the elytron. The pygidium is very 

 delicately punctured. The mesosternum has in the middle at 

 the line dividing it from the metasternum a minute tubercle. 

 The metasternum has posteriorly a well-marked ovate impres- 

 sion ; the intercoxal process is distinctly but not closely punc- 

 tured, it is obtusely angulated anteriorly ; the punctures at 

 the sides are small but distinct and not very close together. 

 The posterior femora have the upper apical angle acutely 



