202 NEW SPECIES MELYRIDAE, CHRYSOMELIDAE AND TENEBRIONIDAE 



suture, punctures moderately small and densest along the apical margin, 

 neck densely and finely granulate. Antennae rather stout and parallel, the 

 terminal four joints slightly narrower and less stout than the preceding 

 joints. 



Pronotum broader than long; apex moderately deeply emarginate, 

 slightly broader than the base ; sides moderately arcuate, sinuate near the 

 base, hind angles rather less than rectangular ; base broadly emarginate ; 

 surface moderately convex, sparsely punctured and subopaque and with a 

 more or less deep, transverse, ante-basal impression; apical angles quite 

 broad, anteriorly prominent and subobtuse. 



Propleura sparsely punctate, punctures subobsolete, many rugulae 

 more or less evident. 



Elytra oblong-oval, not wider at base than the pronotum, widest at 

 middle, sides moderately arcuate; surface moderately convex, with rows 

 of punctures on the disk which become irregular and submuricate at the 

 sides and apex, intervals flat and submuricately punctate ; serial punctures 

 a little larger than the interstitial ; disk almost vertically declivous 

 posteriorly. 



Parapleura irregularly and sparsely punctate. 



Sterna. Prosternum sparsely punctate, more or less impunctate 

 within the oblique sutures ; process slightly produced, subevenly oval, 

 margin prominent, surface impressed and sparsely punctate and with a 

 few rugae. Mesosternum moderately declivous, quite deeply impressed, 

 surface smooth and narrowly punctate along the periphery. Metasternum 

 very short and punctato-rugose. 



Abdomen sparsely and very obsoletely punctate; intercoxal process 

 rugose, fourth and fifth segments distinctly punctate apically, the former 

 glabrous in about basal half, the latter in basal third; first suture per- 

 fectly straight, the third and fourth quite strongly arcuate. 



Legs rather short. 'Femora rather sparsely punctate, tibial grooves 

 distinctly and rather more densely punctured; tibiae quite densely 

 muricato-punctate ; tarsi stout and similar in the sexes, plantar grooves 

 open, the setae ferruginous. 



Male. Narrower. Abdomen feebly oblique to the 'sterna and 

 slightly more flattened between the metacoxae. 



Female. Broader. Abdomen perfectly horizontal and slightly more 

 convex. Elytra more broadly oblong-oval. 



Measurements. Length, 21-25 mm. ; width, 9-11 mm. 



Type in the Horn collection at the Philadelphia Academy of Sciences. 



Type locality. Mohave Desert, California. 



Habitat. Hesperia and the Mohave Desert, California. 



