GALERUCINE BEETLES — BLAKE 253 



the face. As in Romanifa amazonica and the species of Platymorpha 

 the third antenna! joint in the male is compressed. 



Porechontes limbella (Weise) 



Figure 30 



Chthoneis limbella Weise, Ark. Zool., vol. 14, no. 1, pp. 103-104, 1921. 



About 4 mm. in length, elongate oblong oval, shining, the pronotimi 

 punctate along the base, the elytra strongly and a little rugosely 

 punctate, the occiput of head, tip of abdomen, elytra (except lateral 

 margin), legs more or less piceous, the lower front of head and base 

 of femora deep brown, prothorax and body beneath pale, the antennae 

 with the three terminal joints pale, ninth joint in male widened and 

 middle tibiae excised. 



Head with the interocular space half width of head, occiput finely 

 punctate, frontal tubercles somewhat swollen and a narrow carina 

 that is lost in the somewhat swollen and smooth lower front, that is 

 paler than the dark occiput and rather densely punctate, in the male 

 a deep pore in middle below the antenna! sockets, eyes large and rather 

 bulging. Antennae long, slender and hairy, extending beyond the 

 middle of the elytra, in the male the third joint shorter than the 

 second and cup shaped, and the ninth widening in a triangular shape 

 towards apex, basal joints yellowish brown, terminal three joints pale 

 yellow with the apex of the last dark. Prothorax with the sides 

 slightly curved, a scooped-out depression in lower half, surface shiny 

 and distinctly punctate along anterior and basal margin but not in 

 the depression, entirely pale. Scutellum dark b^o\^^l. Elytra smooth, 

 without depressions except the short intrahumeral one, rather densely 

 and somewhat rugosely punctate, piceous with the pale margin along 

 the sides becoming brownish at apex. Body beneath pale yellow 

 with the tip of the abdomen dark, the femora at base pale brown, 

 becoming piceous outwardly, tibiae and tarsi piceous, middle tibiae 

 of the male notched, anterior coxal cavities open, claws appendiculate, 

 no spine discernible on the tibiae. Length 4 mm.; width 2.2 mm. 



Type, male, in Riksmuseum, Stockholm, Sweden, from Rio Purus, 

 Amazon, Roman collector. 



Remarks: This is closely related to Porechontes albiventris (Blake). 



Simopsis, new genus 



Type species: Simopsis neobroticoides, new species. 



Elongate oblong oval, head with the face rather flat, only a trace 

 of a carina and the frontal tubercles only outlined. Antennae in the 

 male with the third joint short and compressed, the fourth joint longest 

 of all, and joints four to eight somewhat thicker than the rest. Pro- 



