16 
Psyche 
[March 
and palpi ferrugineous. Length 10 mm. ; width 3.4 mm. 
Head robust, with neck a little constricted ; eyes wide, mod- 
erately convex; frontal sulci narrow and elongate; antennae 
slender, reaching the base of the prothorax. Prothorax 
moderately elongate (2.4 by 2.8 mm.) ; sides regularly 
rounded; anterior angles near neck, rounded; basal angles 
nearly square, their tips moderately rounded; basal sulci 
narrow and moderately elongate ; disc smooth, little convex ; 
median line little impressed anteriorly, deep between the 
basal sulci, nearly obsolete near base; base impunctate, 
margined at sides; lateral margins very narrow, linear. 
Elytra oblong, elongate (5.6 by 3.4 mm.) ; sides little nar- 
rowed towards shoulders ; latter rounded, not dentate ; striae 
deep, lightly punctate; interstices convex; third interstice 
with three punctures, the first at basal *4 near third stria, 
the others near second stria. Underside smooth, impunctate; 
metepisterna 1.5 times long as wide, sulcate along inner and 
anterior sides. Legs normal ; onychium with fine setae 
beneath. Aedeagus as shown in Fig. 12. 
Holotype $ (Museum of Comparative Zoology, Type No. 
28,439), allotype $ (coll. Straneo), and 14 paratypes (M. 
C.Z. and coll. Straneo) all from vicinity of Horqueta, Par- 
aguay, January 21 and 27 and February 1 and 4, 1934 (A. 
Schulze) . 
This new species, because of the position of the dorsal 
punctures of the elytra, belongs in the group of M. viridia- 
eneus. It differs from M. bahiae Tschit. by the shape of the 
prothorax, which is considerably narrowed towards base, 
and by the color of the upper side. 
Genus Cynthidia Chaud. 
Five species belonging to this genus have been described. 
There are probably several undescribed species, but I can 
give only a preliminary description of one of them. I have 
not yet secured males of planodisca Perty and cancellata 
Brulle necessary for comparison with the other new ones. 
