FRED. C. BOWDITCH. O 



Chlaniys riig"icollis nov. sp. Quadrate, above bluish-green, 

 cyaneous shining ; below and legs purple, insides of femora more or 

 less cupreous, pygidium cupreous, antennae, except the first joint, 

 the mouth parts and tarsi, flavous ; thorax coarsely punctate, rugose 

 on the hump, which is large and rounded, deeply divided by a wide 

 sulcus which nearly attains the anterior margin, a well marked lateral 

 tubercle and also one on the side of the hump near the tip ; pygidium 

 moderately closely punctate and with a fine median carina ; pros- 

 ternum very abruptly narrowed at about the anterior quarter to almost 

 a knife edge ; length 5-5 j mm. 



Type. — &^ ; Jatahy Goyaz, Brazil, two cf's, one 9, three 

 examples. 



Head of cf with front and vertex channelled, more or less 

 cupreous, particularly the epistome, 9 not as bright and the 

 lower part of the channel not as obvious, surface punctate, 

 antennae with the scape more or less cyaneous, the second 

 joint rounded, the third and following transverse and dilated, 

 punctuation of the thorax coarse and thick with a tendency 

 to become strigose, especially on the hump, at the sides, and 

 behind ; the hump well elevated, reticulated punctate stri- 

 gose, the ridges limiting the sulcus, branch obsoletely at the 

 vertex and flow down over the subsidiary side tubercle, the 

 sulcus itself is closely rugosely punctate ; the elytra are 

 hardly compressed behind the shoulders, rather coarsely 

 reticulate punctate in the intervals, especially at the sides 

 and behind and with very strongly raised costae as follows : 

 a sutural which curves outward, and then inward nearly to 

 the suture at the middle where it curves outward again and 

 joins the median (somewhat like surinamensis Jac), the 

 median runs parallel to the sutural, then continues to apex, 

 where it ends in a costiform tubercle. There are about two 

 short transverse connections to the sutural and humeral near 

 the middle, the humeral and subhumeralboth form costiform 

 tubercles near the apex, the subhumeral and median have a 

 inarked tendency to join in a loop at the apex. There is 

 also a small tubercle at the basal end of the sutural costa — 

 mesosternum hair. 



Belongs to Lacordaire's Group 7. 



TRANS. AM. ENT. SOC. , XXXIX. 



