SPHAEROCERA IN CENTRAL AND SOUTH AMERICA — RICHARDS 237 



O 



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21 



C3 22 



20 



o 







25 



26 



24 







i 







28 



27 



Figures 18-28. — Sphaerocera shannoni, new species: 18, Abdominal sternites 1-5, cf. 

 Sphaerocera amphora, new species: 19, Abdominal sternites 1-S, 9 . Sphaerocera 

 xiphosiernum, new species: 20, Abdominal sternites 1-S, 9 , sternite 4 shown for each of 

 three specimens: a, Higuito; b, Albrook Field; c, Patino Point. Sphaerocera musiphila, 

 new species: 21, Abdominal sternites \-A, cf. Sphaerocera transversalis, new species: 

 22, Abdominal sternites 1-4, cf . 23, Facial plate, cf. Sphaerocera lepida, new species: 

 24, Abdominal sternites 1-5, 9 . 25, Presternum, 9 . Sphaerocera varipes Malloch: 26, 

 Abdominal sternites 1-4, d". 27, Abdominal sternites 1-4, 9 , sternite 3 completely 

 desclerotized. Sphaerocera guttula, new species: 28, Abdominal sternites 1-4, 9- 



almost oval but posterior margin somewhat truncate, length two- 

 thirds, width one-half that of sternites H-2; sternite 4 nearly square, 

 much like sternites 1-1-2; sternite 5 trapeziform, sides straight, con- 

 verging posteriorly, anterior and posterior margins nearly straight; 

 cerci each with about three straight moderately long hairs. 



Panama Canal Zone: Erwin Island, July 18, 1923, holotype 9, 

 R. C. Shannon (received in exchange from Mr. Curtis Sabrosky 

 as iS*. pallipes Malloch, now in the British Museum). 



