BEETLES OF THE GENUS MYOCHROUS — BLAKE 37 



MYOCHROUS PLATYLONCHUS, new species 



Plate 1, Figure 6 



From 5 to 6 mm. in length, oblong, deep reddish brown to piceous, 

 very shiny through the curved, not closely appressed yellowish scales, 

 the scales not so dense as to conceal the sculpture, coarsely and densely 

 punctate throughout ; aedeagus with a scooplike tip, unusually broad. 



Head covered with scales down to antenna! sockets, an unusually 

 deep median furrow down front ending in a broad shallow depression ; 

 surface under the scales coarsely and rugosely punctate, a ridge on 

 either side of occiput. Antennae extending a little below the humeri, 

 reddish brown, of the usual proportions. Prothorax considerably 

 wider than long and somewhat contracted at the base, rather fiat and 

 with little convexity, a slight median depression over the scutellum; 

 the three lateral teeth well developed ; punctation very dense, coarse, 

 and becoming coarser and more confluent in the basal half with ridg- 

 ings. Elytra smoothly convex without callosities and only a faint 

 transverse depression on the side; striate punctures coarse and con- 

 tingent with transverse ridgings visible through the moderate scali- 

 ness ; elytra usually a little more reddish brown than the prothorax. 

 Body beneath shining under the light fine scales, unusually coarsely 

 punctate over the metasternum and first abdominal segment. Hind 

 femora with a small tooth, anterior tibiae with the usual inner tooth. 

 Length 4.8 to 6 mm. ; width 2,2 to 2.7 mm. 



Ty'pe and 'paratypes. — Type male and 24 paratypes, U.S.N.M. No. 

 59020, collected January to April 1911 (E. A. Schwarz, A. Busck, 

 A. H. Jennings) ; 2 paratypes in Museum of Comparative Zoology. 



Type locality. — Paraiso, Canal Zone, Panama. 



Other localities. — Canal Zone: Las Cruces (E. A. Schwarz and 

 A. Busck) ; Bohio (E. A. Schwarz) ; Corazal (A. Busck) ; Tabernella 

 (A. Busck) ; Gatun (M. Hebard) ; Panama : Trinidad Eiver, Colorado 

 Island (J. D. Hood and N. S. Scrimshaw) ; Old Panama (A. H. 

 Jennings) ; Panama (A. H. Jennings) ; Colombia : Aracataca, Magda- 

 lena Province (P. J. Darlington, 1929) ; Buenaventura (C. L. Fagen). 



Remarhs. — This species has been collected in numbers throughout 

 the Canal Zone. A number of specimens have been taken also by P. J. 

 Darlington in northern Colombia and one by C. L. Fagen well down 

 the coast of western Colombia. It is a shiny, deep reddish-brown 

 or bronzy beetle with a very coarsely punctate prothorax and a most 

 distinctive aedeagus, the tip of which is wider than usual in the genus 

 and scoop-shaped. 



MYOCHROUS GEMINUS. new species 



Plate 1, Figure 8 



About 5 mm. in length, oblong, piceous, shining with a bronzy 

 luster from beneath the curving grayish white scales; prothorax 3- 



