42 U.S. NATIONAL MUSEUM BULLETIN 2 68 



Chisos Mts., Big Bend Nat. Park, Brewster County, Tex., July 6, 

 1942 (H. A. Scull en). 



Distribution. — Since this species was described by this writer in 

 1948 (p. 165) a few new records have shown an enlarged known 

 distribution including Chihuahua, Mexico. However, only the one 

 female has been recorded. The types and paratypes are included in 

 the following records. Specimens are as follows: 



New Mexico: Rowe, San Miguel County, July 19, 1952 (R. H. Beamer and 

 party). Texas: ?, 45cf cT*, Chisos Mts., Big Bend Nat. Park, Brewster County, 

 July 3-6, 1942 (H. A. Scullen); 8cf cT, same locality, July 6, 1942 (E. C. Van 

 Dyke); cf, same locality, July 17, 1921 (Carl D. Duncan); cf, same locality 

 (no date or collector); cf, same locality (J. Bequaert) ; c?", Davis Mts., Jeff 

 Davis County, June 26, 1942 (H. A. Scullen); cf, 11 mi. N., 4 mi. W., Alpine, 

 June 20, 1961 (D. W. Smith). MEXICO: 2 d^ c?, Chihuahua, Chih., Aug. 12, 1951, 

 at Baccharis glutinosa (P. D. Hurd). 



Prey records. — None. 



Plant records. — Baccharis glutinosa (Chihuahua, Mexico) 



Figure 24. Rio Grande Valley. E. mellea Scullen 



21. Eucerceris menkei, new species 



Figures 25, 79 a, b, c, d 



Female. — ^Length 13 mm. Black with yellow markings becoming 

 fulvous on the distal half of the legs; punctation small and crowded; 

 pubescence longer than average on many parts. 



Head slightly wider than the thorax; black except for frontal eye 

 patches, patches on the medial clypeal lobe, and each lateral lobe, 

 an elongate area between the antennal scrobes and an elongate patch 

 back of the eye, all of which are dusky yellow; clypeal border with 

 two pair of denticles, each pair located near the junction of the medial 

 and lateral lobes of the clypeus; the two medial pair of denticles 

 connected with each other by an emarginate lamella; medially and 

 just above this lamella there is a small cluster of bristles; mandibles 

 with two denticles, one above the other, the dorsal one much the 

 larger and apically rounded; antennae normal in form, largely fulvous 

 basally but darker apically. 



