236 PROCEEDINGS OF THE NATIONAL MUSEUM vol. iis 



rounded; sternite 5 short, very transv erse; genitalia rather small, ninth 

 tergite emarginate to receive the cerci, v>^hich apparently are separated 

 by a rather narrow V-shaped membranous area. Female with sternites 

 1+2 (fig. 27) represented by a small oval central plate; sternite 3 not 

 sclerotized; sternite 4 almost parallel sided, slightly narrowed pos- 

 teriorly, where it is somewhat rounded, about three times as long as 

 broad; sternite 5 somewhat widely crcscentic, cerci hidden. 



Specimens examined: Costa Rica: San Mateo, Higuito, 9 type, P. 

 vSchUd; San Jose, July, 9, H. Schmidt, USNM. Panama: bananas, 

 Aug. 25 and Sept. 22, 1932, 2 d", CAS. 



In the collection of the USNM are eight more females that seem to 

 belong to the same species; they come from Costa Rica, Honduras, 

 San Francisco ex Guatemala, and one definitely from the United 

 States — Georgia: Savannah, Oct. 12, 1953, privy trap, J. W. 

 Kilpatrick. 



Sphaerocera (Parasphaerocera) pallipes Malloch 



Sphaerocera pallipes Malloch, 1914, Ent. News, vol. 25, p. 31. 



This species was described originally from Panama: Buena Ventura, 

 May 19, 1911, 9, USNM. I have examined the type. The species 

 and its allies resemble those of the subgenus Parasphaerocera but lack 

 or, in one form described below, almost lack the pale abdominal spots, 

 the tergites being uniformly dark and sclerotized. Malloch (1925, 

 p. 121) states he has seen many additional specimens from Panama, 

 but, as I have now seen three forms (at least two species) of this group, 

 I feel that the material should be re-examined. I did not find a long 

 series in the USNM. 



Redescription of type: Female. Legs yellow brown, hind tibia with- 

 out anteroventral spm\ Size somewhat smaller than S. ecuadoria, new 

 species. Sternites 1 +2 represented by a plate that is rather narrowly 

 pear shaped; sternite 3 narrow, almost linear; sternite 4 long trapezi- 

 form, narrowing posteriorly, about twice as long as anteriorly broad; 

 corners not rounded. Abdomen entirely black dorsally. 



Sphaerocera (Parasphaerocera) guttula, new species 



Female. Black; antennae pale brown; legs pale yeliov/ brown. 

 Abdomen with very small transverse pale spots; one-fifth as wide as 

 tergites, length about equal to width of hindtibia. Length about 2.5 mm. 



Facial plate almost flat, trapeziform. Prosternum with a small 

 transverse triangular posterior area that is produced anteriorly into 

 a short gradually narrowing extension. Hindtibia with no antero- 

 ventral spur, femora slightly thickened. Tergite 5 very transverse 

 posteriorly rounded. Sternites 1+2 (fig. 28) represented by a nearly 

 square plate, width not quite twice that of hindfemur; sternite 3 



