BEETLES OF THE GENUS MYOCHROUS — BLAKE 61 



Head covered by scales to antennal sockets, with a faint, depressed, 

 median line down front; punctation beneath the scales coarse, some- 

 times confluent, dense, rugose, the usual occipital ridges on each side ; 

 lower front densely but not so coarsely punctate, with a short fine 

 scale from each puncture. Antennae reddish or yellowish brown, of 

 the usual proportions. Prothorax large, a little broader than long, 

 almost as broad as elytra ; evenly convex with a slight median basal 

 depression over the scutellum; sides with three well-developed teeth 

 as well as a basal and an apical tooth ; punctation coarse, deep, elon- 

 gate, usually in confluent longitudinal lines. Elytra without any 

 distinct basal callosities, a slight lateral depression below the humerus; 

 punctation not entirely hidden by the short, pale, somewhat curved 

 scales ; punctures comparatively rather fine and dense without trans- 

 verse ridging. Body beneath lustrous under the short white hairlike 

 scales, first abdominal segment rather densely but not coarsely punc- 

 tate. Hind femora bluntly toothed, anterior tibiae with the usual 

 inner tooth. Length 4.5 to 6.1 mm. ; width 2 to 2.8 mm. 



Tyye and paratypes. — Type and nine paratypes, U.S.N.M. No. 57984, 

 collected by E. A. Schwarz ; one paratype in the Museum of Compara- 

 tive Zoology. 



Type locality. — Cayamas, Cuba. 



Other localities. — Ctjba: Agramonte, Camagiiey Province, July 2, 

 1934 (J. Acuiia) ; Baragua, May 16, 1927 (L. Scaramuzza, taken on 

 Capsicuin sp. on May 26, 1927, by the same collector on sugarcane, on 

 elune 12, 1925, by Lomanitz on sugarcane) ; Ca]3e Covadonga, Zapata, 

 "S. W.," September 16, 1936 (Davenport) ; Cape Jareno (H. K. 

 Plank, feeding on sugarcane) ; Cape Velasco, November 4, 1930; 

 Chaparra, July 10, 1915 (L. Scaramuzza, on sugarcane) ; Habana 

 (Baker and Barbour) ; San Antonio cle los Bafios (Jose H, Pazos) ; 

 Santiago de las Vegas, August 30, 1930 (S. C. Bruner; on May 20, 

 1923, by A. Otero). ' 



Remarks. — The roughly sculptured prothorax distinguishes this 

 from the other West Indian species. The aedeagi of the species from 

 Cuba, Puerto Rico, Dominican Republic, and probably Jamaica (no 

 male seen) are very much alike, but the beetles themselves consistently 

 show minor differences. As in the case of the genus Disonycha., cer- 

 tain groups of species in Myochrous such as the present one are still 

 not very far developed in their specific differences. 



In an earlier paper on the species of Myochrous from the West 

 Indies I discussed Myochrous duhius (Fabricius) , which was described 

 from a specimen collected in "America meridionali." The description 

 does not fit very well any species of Myochrous., and it seems best not 

 to attempt to apply this name at present. 



