18. Xystosomus notiophiloides , new species

FIGURES 38, 70

TYPE-LOCALITY.— Jatahy, Goyaz Province, Brazil. TYPE-SPECIMENS.—The holotype female is in MHNP. Three paratypes: MHNP, 2; USNM, 1. All four were collected by Donckier in 1903.

DESCRIPTION.—Form: As in X. elaphrinus , although smaller and flatter; superficially resembling members of genus Notiophilus. Easily distinguished from the other two species of the group by the elytra, each of which has eight serial rows of small, even punctulae entire to apex.

Color: Head and body piceous; entire dorsal surface of head and body shiny with metallic green luster; appendages testaceous or partially infuscated.

Head: Very broad between eyes; frontal furrows moderately impressed and separated from eye by small rounded costae; eyes huge and hemispherical.

Pronotum (Figure 38): Quadrate (W/L, x 1.51; range, 1.47-1.57; 4 specimens); otherwise as in X. elaphrinus .

Elytra: Each elytron with eight serial rows of small, even punctulae, each entire to apex; lateral rows more impressed than discal rows; otherwise as in X. elaphrinus.

Microsculpture: As in X. elaphrinus, except head with faintly impressed, nearly isodiametric meshes.

Secondary sexual characters: Male genitalia unknown. Female genitalia characteristic of the species group.

Size: Four specimens: length 3.2-3.5 mm; width, 1.36-1.40 mm.

NATURAL HISTORY.— Unknown, except adults collected in March. No teneral specimens seen.

LOCALITY RECORDS (Figure 70).—I have seen four specimens from the following locality:

SOUTH AMERICA: BRAZIL: Goyaz Province: Jatahy (MHNP, USNM).