264 Mr. C. O. AYaterhouse's descriptions of 



joint of the antennas moderately elongate, club-shaped, the 

 2nd to 5th joints moniliform, the 6th to 10th transverse, 

 gradually becoming wider, the 11th joint subrotundate, 

 flattened. When in repose the antenna are received into 

 a channel beneath the eye. Other characters as in Delo- 

 cjnatha. 



This genus should be placed between Phrenapates and 

 Delognatha ; it is particularly interesting on account 

 of the species of both the allied genera being South 

 American. 



Pi/cnocMlus advenus, sp. n. 



Elongatus, subcylindricus, piceus vel nigro-piceus, niti- 

 dus ; capite thoraceque subtiliter sat crebre punctulatis ; 

 elytris fortiter striatis, striis fortiter punctatis, interstitiis 

 bene convexis, Ifevibus. 



Long. 4^ — 6 lin. 



$ . Head very wide, with a deep impression above the 

 eyes, with two slight approximate tubercles on the fore- 

 head, and with a more prominent tubercle above the base 

 of each mandible, the transverse space between the last 

 tubercles is on a lower level than the frontal tubercles ; 

 the punctuation is very fine and moderately thick, the 

 sides of the head are rounded. Thorax in front a little 

 wider than the head, very little narrowed posteriorly, one- 

 quarter broader than long, more sparingly punctured than 

 the head, the anterior angles a little prominent, acute. 

 Scutellum very small, rounded behind. Elytra very 

 deeply striated, the stride strongly and closely punctured. 



$. The mandibles less porrect, with an obtuse tooth 

 above near the base. Head less broad, and with the 

 tubercles nearly obsolete. 



Hah. — Antananarivo (Mr. Kingdon). 



CEEAMBYCID^. 

 Opsamates, no v. gen. 



Head channelled between the antennal tubercles, with 

 no mesial carina, cheeks extremely short. Antennas of 

 the female reaching to the middle of the elytra ; the basal 

 joint obconic, the 3rd a very little longer than the first, 

 twice as broad at the apex as at the base, the apical angle 

 slightly prominent; the 4th to 8th joints of about the 



