68 MARTIN JACOBY 



the latter, deeply punctured; elytra dark blue, deeply punctnti^- 

 striate, the interstices longitudinally costate. 



Length 1 - 1 7-2 ^i^^^- 



Head inipunctate, the eyes surrounded by a narrow groove; 

 frontal tubercles in shape of a very narrow , acute and oljlique 

 ridge; upper part of the clypeus impressed with deep elongate 

 punctures; antennae half the length of the body, the second 

 joint thickened , the third scarcely longer but thinner, the 7."' 

 to the 10.*'' joints widened; the 5 basal ones fulvous, the follo- 

 wing black, apical joint obscure testaceous; thorax transverse, 

 the sides straight near the base, obliquely cut at the anterior 

 angles , middle portion of the posterior margin greatly produced 

 and rounded; basilar groove sinuate, distinct but not well limited 

 at the sides, its entire course marked with deeply impressed 

 elongate punctures, rest of the surface impunctate; scutellum 

 black; elytra deeply impressed with regular rows of round punc- 

 tures, rest of the surface impunctate; scutellum black; elytra 

 deeply impressed with regular rows of round punctures, the 

 interstices longitudinally costate throughout; presternum rather 

 broad, widened at its base, rugose-punctate; anterior coxal ca- 

 vities closed. 



New Guinea, Sorong, February, Hatam, July (0. Beccari). 



It will be seen by the above description, that the species 

 here described, scarcely shows much of the structural characters 

 of Crepidodem in which genus I have placed it only provisio- 

 nally, as the species has the closed anterior cavities as well as 

 the thoracic groove in common with its allies. The shape of the 

 insect differs however in being almost subquadrate and very 

 convex and the thoracic groove is not limited at each side by 

 a longitudinal depression (generally the case in Crepidodera). 

 Xenidea Baly, approaches close the present insect in shape and 

 general appearance, but that genus is devoid of a transverse 

 thoracic groove, and the first posterior tarsal joint is longer 

 than the 2 following taken together , while here it is only as 

 long; the tibiae also in Baly's genus are sulcate while hero 

 they are simple. The other characters are as in Crepidodem, 



