DIORYMERUS. 217 
11. Diorymerus ovatus, sp.n. (Tab. XII. figg. 20, 20a.) 
Globose-ovate, shining, black, Head somewhat closely punctate, with a shallow transverse frontal depression ; 
rostrum short, stout, strongly arcuate, closely punctate, a little smoother in the Q. Prothorax smooth, 
the anterior lobe and the produced basal portion finely punctate, the base slightly depressed on each side 
of the median lobe. Scutellum oblong-subquadrate. Elytra finely striate, the striee becoming deeper at 
the base and near the suture, all conspicuously punctate. Beneath, the propleura included, coarsely 
punctate, the ventral segments 2-4 much smoother, 1 densely punctate, slightly depressed down the 
middle in the ¢. Femora coarsely punctate, deeply sulcate and unarmed beneath. Intermediate and 
posterior tibiee broad, straight, angularly dilated externally near the base; anterior tibie narrower, 
curved outwards, subangularly dilated near the base. 
Length 3,%,-44, breadth 25-31 millim. (¢ 2.) 
Hab. Muxtco, Playa Vicente, Toxpam (Sallé), Cordova (Hége), Teapa (7. H. Sinith) ; 
Guatemata, Cubilguitz, Chacoj, Capetillo (Champion); Costa Rica, Alajuela (Orosco, 
in Mus. Brit.). 
Ten specimens. The chief characters of this species are its convex, regularly 
globose-ovate form, distinctly punctate-striate elytra, and oblong scutellum. D. ovatus 
is not unlike Rhianus mexicanus, Pasc., but it is smaller and has the femora more 
deeply sulcate beneath. The elytra are much more distinctly punctate-striate than 
in D. leviusculus. 
12. Diorymerus cribrarius, sp. n. (Tab. XII. figg. 21, 21 a.) 
Ovate, shining, black. Head finely punctate, foveate in the middle above the eyes and flattened between 
them ; rostrum short and stout, thickly punctate. Prothorax very finely, sparsely punctate (except along 
a narrow smooth space down the middle), the punctures becoming a little coarser along the basal margin, 
the flanks closely set with large, coarse, rounded impressions, the base unimpressed. Scutellum small, 
subquadrate. Elytra depressed along the suture, finely striate, the strie feebly punctate, becoming 
deeper towards the suture and almost obsolete on the outer part of the disc, the marginal strize catenulate- 
punctate. Beneath, the flanks included, very coarsely, closely punctate, the ventral segments 3 and 4 
and the base of 5 almost smooth. Legs short and stout, closely punctate; femora deeply sulcate and 
unarmed beneath ; tibiw straight, the anterior pair feebly, the others more strongly, angulate near the 
base externally. 
Length 3-3,15, breadth 2-275 millim. 
Hab. Panama, Bugaba (Champion). 
Three specimens. ‘The extremely coarse punctuation of the pro-, meso-, and 
metapleura (coarser than in D. ovatus), the distinct frontal impression, the un- 
impressed base of the prothorax, and the straight tibie, separate D. cribrarius from 
most of its allies. 
13. Diorymerus laticrus, sp. n. (Tab. XII. figg. 22, 22 a.) 
Short ovate, very convex, black, shining. Head finely punctate, not depressed between the eyes; rostrum 
very short, stout, punctulate and longitudinally strigose. Prothorax conical, with excessively minute 
scattered punctures, those on the anterior lobe and the produced basal portion coarser. Scutellum flat, 
subquadrate. Elytra finely striate, the strie with small scattered puntures, becoming deeper towards 
the suture and almost obsolete towards the sides. Pro-, meso-, and metapleura with very coarse 
scattered punctures, the first ventral. segment coarsely, and rest of the under surface much more 
BIOL. CENTR.-AMER., Coleopt., Vol. IV. Pt. 5, November 1907. QPF 
