436 PROCEEDINGS OF THE NATIONAL MUSEUM vol. in 



Type data.— Holo type male (USNM 64417), "Guatemala [inter- 

 cepted] Brownsville, Tex., 66430, 6-14-48-10336, Sohralia sp." Allo- 

 type female (TJSNM), "Guatemala, x-12-43, Sohralia macrantha, 

 43-19570 [intercepted] San Francisco, Cal. #18417." Paratypes as 

 follows : 



Mexico: No exact locality: Intercepted at New Orleans, La., on pineapple, 

 May 12, 1937, 1 female (USNM). San Luis Potosi: Tamazunchale, intercepted at 

 Loredo, Tex., on orchid plant, Oct. 10, 1947, 1 female (USNM). Maiz, inter- 

 cepted at Loredo, Tex., on Laelis anceps, May 19, 1947, 1 female (RCF). Dis- 

 trito Federal: Mexico, intercepted at Laredo, Tex., on Lilium longiflorum, Aug. 

 23, 1945, 2 females (USNM). 



Costa Rica: San Jose, June or July 1931, H. Schmidt, 1 female (KU). 



Discussion. — Although nearly all specimens studied had been 

 collected in the United States, they had originated in Mexico and 

 Guatemala and had been intercepted at quarantine stations upon their 

 entry into this country. Judging from the number of interceptions, it 

 appears that this species must occur in some abundance in Mexico and 

 Guatemala. If such is the case, it is surprising that none of the 

 collections examined in those countries had specimens collected there. 

 This situation points up how poorly known is the fauna of certain 

 countries, especially for groups that require specialized collecting 

 techniques. 



Melanaethus noctivagus (Van Duzee), new combination 



Plate figures 67, 210 

 Geotomus noctivagus Van Duzee, 1923, p. 125. — Torre Bueno, 1939, p. 181. 



Diagnosis. — The short labium (reaching only to middle coxae) 

 and the punctate depressed area between the calli (fig. 67) will permit 

 recognition of this form among all those with a large terminal lobe on 

 the peritreme. 



Description. — Male: Elongate-oval, widest at or immediately 

 anterior to humeri. 



Head: Length almost three-fourths of width, 0.59(0.56-0.61) :0.79 

 (0.76-0.82); interocular width, 0.51(0.50-0.53); anterior outline a 

 prolonged semicu'cle, clypeus as long as juga, weakly narrowed 

 apically; surface with numerous moderate, well-separated punctures; 

 with distinct, marginal carina dorsally; with no submarginal punc- 

 tures; ocelli large, separated from eye by space less than twice 

 transverse ocellar width; jugum ventrally and maxillary plate im- 

 punctate. Antenna! segments: I, 0.16(0.14-0.18) ; II, 0.21(0.20-0.23) ; 

 III, 0.21(0.20-0.23); IV, 0.29(0.27-0.31); V, 0.37(0.36-0.41). Buc- 

 culae higher than labial II, abruptly terminated posteriorly; labium 

 extended to middle coxae. Labial segments: I, 0.21(0.20-0.24); II, 

 0.39(0.36-0.43); III, 0.26(0.25-0.28); IV, 0.24(0.22-0.26). 



