F. Cnapuis. — Synopsis des Scolytides. 221 
prothorace transverso, apicem versus coarctato, crebre punc- 
tato; elytris parallelis , subsulcatis, interstitiis rugis brevibus 
densis, transversis asperalis. — Long. 11 — 12 mill. 
Cayenne, Brésil, Nova-Fribourg. 
2. P. grossus. — Oblongus, subeylindricus, niger vel 
nigro-piceus, subnitidus , antennis larsisque rufescentibus ; 
prothorace transverso, apicem versus coarctaio, inæqualiter 
punctato-rugoso; elytris parallelis, striato-punctatis, inter- 
stitiis rugis transversis, latioribus, parce asperatis. — Long. 
11 — 12. mill. 
Colombie. 
3. P. scaber. Er. — Oblongo-ovatus, subcylindricus , 
obscure piceus sub-sericeo-nitens; prothorace transverso , 
apicem versus coarctato rugis elevatis densis scabro; elytris 
parallelis, subtiliter striato-punctatis, interstitiis rugis trans- 
versis, brevibus plus minusve asperatis. — Long. 9 mill. 
Brésil, Colombie. 
b. Depressione sternali nulla vel subuulla. 
4. P. sericeus. — Subovatus, subcylindricus , nigro-piceus, 
subsericeo-nitens ; prothorace transverso, rugis elevatis 
flexuosis densis scabro; elytris parallelis, subüliter striato- 
punctatis; interstitiis rugis transversis brevibus dense aspe- 
ratis. Long. 7 — 8 mill. 
Cayenne, Brésil, Cordova. 
o. P. elongatus. — Oblongus, utrinque attenuatus, piceus, 
nitidus, antennis tarsisque rufescentibus ; prothorace trans- 
verso, apicem versus coarctato, dense et grosse punctato; 
elytris subparallelis, striato-subsulsatis, interstitiis rugis 
irregularibus, densis valde asperatis. — Long. 9 — 40 mill. 
Brésil. 
6. P. cristatus. —— Oblongo-ovatus, piceus, subsericeo- 
