1907.] NATI-RAL SCIENCES OF PHILADELPHIA. 377 



Subgenital plate produced, tapering, bent considerably dorsad^near 

 the base, deeply antl narrowly divided, short style.s present. 



CERAIA Brunncr. 



1891. Ceraia Brunncr, Verliandl. K.-K. Zool.-hot. Gesell. Wicn, XLI. pp. 

 18, 127. 



Type. — C. tibialis Brunncr. 



Ceraia cornutoides Caudell. 



l*t()(i. Ceraia cornuloidcs Caudfll, I'roc. U. .S. Nat Mu.s., XXX, p. 237. 

 [Sapucay, Paraguay.] 



January, 1903, :\rarch, 1905; two females. 



SCAPHURA Kirby. 

 1825. ScapJtura Kirby, Zool. Journ., I, p. i'V2. 

 Type. — S. vigorsii Kirby. 

 Scaphura nigra (Thunberg). 



1824. Tr ?•[)///!/ .•^] niger Thunberg, ]\I('-ni. I'Acail. Imp. de.s Sciences, St. 

 Petersb.; IX, p. 41.5. [Brazil.] 



January and March, 1903 and 1905; one male, three females. 



These specimens do not fully agree with any of the numerous color 

 forms of this species, being closer to vigorsii Kirby and chalyhea 

 Marschall than to the others. From the former they differ in the 

 absence of pale markings on the median femora and in the more 

 brownish wings, these latter being distinctly red-brown with a pre- 

 apical portion infuscate. From chalyhea they differ in the chalj^beous 

 proximal portion of the antennae comprising eight to thirteen joints, 

 instead of only reaching the third. However they are closer to 

 chalyhea than to the type called vigorsii by Kirby. 



I have provisionally considered all the nominal species as forms of 

 nigra, which is the oldest name, the probability being that the various 

 forms are geographic and restricted to definite areas. The variation 

 noted in the four specimens in hand is slight, and from this one may 

 infer that variation in one locality is generally no greater. 



The resemblance of this species to a Sphegid wasp is very striking, as 

 has already been noticed by Westwood, the similarity to species of the 

 genus Pepsis being particularly true of the specimens examined. 



GRAMMADERA Brunner. 

 1878. Grammadera Brunner, .M(Mi()gr. der Plianeropt., pp. 27, 297. 

 Type. — G. clara Brunner. 



♦Grammadera albida Brunner. 



1S78. G[rammadera] albida Brunner, Monogr. der Plianeropt., p. 298. 

 [Brazil.] 



November and December, 1904; two males, one female. 



