1902.] ON XEW SPECIES OF AMERICAN COLEOPTERA. 171 



104. PSEPHOTUS CHRYSOPTERYaiUS. 



Of this species, perhaps the most beautiful of all Aufctralian 

 Parrakeets, we received a pair in imraature plumage iii March 

 1897. They are now in full plumage and in excellent condition. 



EXPLANATION OF THE PLATES. 



PlATE XVIIL 

 Eclectus westermanni, $ and ? adult, p. 170. 



Plate XIX. 



Flati/cercus mastersiamis, p. 170. 



(Taken from specimen deposited on Oct. 29, 1897.) 



3, Descriptions ol: New Species of Coleoptera o£ the Familf 

 HaUicidcc from South and Central America. Bj 

 Maktin Jacoby, F.E.S. 



[Received FeLruarj' 1 5, 1902.] 



(Plate XX.') 



The constant application for the determination of so many 

 specimens of Halticida? which I have received from different sources 

 has induced me to describe most of those which are contained in 

 my collection, for a long time unnamed, as a f mother contribution to 

 the extremely numerous described forms from South and Central 

 America. The subject can scarcely be dealt with at present in 

 anything but a very incomplete manner, but eveiy little helps 

 and will one day assist in grouping together the enormous material 

 known, when the time and opportunity has airived for a proper 

 monogi-aph of this immense famdy, such as has been attempted 

 with the species known from Central America, in the great work 

 on that country by Godman and Salvin. 



The present paper deals with that division of the Halticidee in 

 which a more or less distinct thoracic sulcus is present in connection 

 with simple, not inflated, posterior claws. 



DiPHAULACA COSTATIPENNIS, sp. n. 



Dark metallic blue, the basal joints of the antennae fulvous ; 

 thorax obscure cupreous, im punctate ; elytra closely and nearly 

 irregularly punctm-ed, the sides with two or three longitudinal 

 costse. 



Length 4 millim. 



Head impunctate, the frontal elevations elongate, divided by a 

 deep groove, the carina acute ; antennae long and slender, black, 

 the lower three joints fulvous below, stained with metallic blue 

 above ; thorax subquadrate, the sides straight at the base, rounded 



1 For explanation of the Plate, »ee p. 204. 



