202 Prof. J. O. Westwood on a 



between the eyes. The mentum is wider than long, Avith 

 the front margin nearly straight, the sides rounded, the 

 base terminating in a central triangular flat tooth and the 

 middle of the disc Avith a deep longitudinal impression. 

 The disc of the pronotum is finely punctured, the hind- 

 part marked with fine parallel strigte. The abdomen is 

 convex, with a transverse deep impression at the base of 

 the penultimate segment. 



Phymatopteryx glaberrimus. (PI. III. fig. 4.) 



Castaneus fulvo variegatus, nitidissimus Icevissimus, sub- 

 planus ; capite punctato, pronoti disco subplano, impres- 

 sionibus 8 rotundatis, mediis duabus majoribus punctatis ; 

 scutello elongate l^vi fulvo utrinque linea punctorum 

 notato ; elytris castaneis, sutura elevata fulva, singulo linea 

 longitudinali curvata profunde impressa media, e basi ad 

 tuberculum subapicale extensa, tuberculisque tribus luteis 

 (in singulo) in lineam curvatam positis. 



Long. Corp. lin. 45. 



Habitat prope lacum N'gami. In Mus. Parry. 



This beautiful little insect is rather smaller, flatter and 

 more glossy than Phymatopteryx sculptilis, Westw. Thes. 

 Ent., PI. VIII. fig. 1. The pronotum is elegantly varied 

 Avith fulvous, the anterior angles being almost destitute of 

 punctures ; the excavated depressions of the pronotum are 

 smaller than in Ph. sculptilis, the central anterior one 

 being scarcely impressed, although it is punctured; the 

 posterior angles are rounded, Avithin Avhich the surface is 

 ]nmctured. The elytra are very glabrous and almost des- 

 titute of punctures; the three glabrous luteous tubercles 

 beyond the middle of each elytron form a curved line rather 

 than arranged in a triangle, as in Pii. scvlptilis. The podex 

 has tAVO fulvous apical cavinfE. The legs, are castaneous, 

 Avith a patch of fulvous in the middle of each tibia?. 



I cannot avoid expressing the doubt Avhich I have long 

 entertained, that Y)v. Burmeister's Uloptcra planata is 

 congenerous Avith Pnytnatoptcryx, entirely agreeing, as it 

 does, thercAvith, except in the maxillary jjalpi being secu- 

 rifonii. " Palpis maxillaribus securiformibus inter omnia 

 Melitophila hoc genus potissimum notatur," are the words 

 of Dr. Burmeister, Avhose type Ul. planata was described 

 from the collection of M. Buquet as an inhabitant of 

 Cayenne. 



I have o-iven fio-ures of the details of the mouth of 



