13G E. T. CRESSOX. 



elongate, more tlian twice as long as the second, which is large, sub- 

 quadrate, both side uervures slightly narrowed towards the margi- 

 nal, and receiving the first recurrent at about the middle; the second 

 recurrent nervure joins the cubital nervure a little beyond the tip of 

 the second submarginal cell, /-/t^s short and stout, more or less spi- 

 nose ; anterior femora ( 9 ) much swollen. Abdomen subsessile, long 

 and robust in 9 > ^'i*^ apex generally incurved and subcompressed. 



The form of the head and prothorax of the females of the genus 

 closely resembles that of Pompilnii? purpuripennix^ and three other 

 species which I have doubtingly referred to PompUus. 



1. Planiceps niger, n. sp. 



Female. — Entirely black, with a very faint violaceous reflection ; 

 tips of mandibles rufo-testaceous ; posterior margin of the prothorax 

 nearly straight across or truncate; metathorax abrupt on the sides and 

 behind, with a finely impressed line down the middle ; legs benejith, 

 especially the coxse, brownish sericeous; anterior wings fuliginous, 

 with a violaceous reflection, the apical margin darker; posterior wings 

 subhyaline, dusky at tips. Length 6 lines. 



Hub. — Connecticut, (Coll. Mr. E. Norton) ; Georgia, (Coll. Am. 

 Ent. Soc). 



Two 9 specimens. 



2. Planiceps collaris. 



F/aniceps collaris, Cresson, Proc. Ent. Soc. Phil, iv, p. 132, 9- 

 Female. — Black; anterior and posterior margin of the prothorax, 

 and the abdomen entirely, ferruginous ; wings fuseo-hyaline. the ante- 

 rior pair with a strong golden reflection. Length 5j| lines. 

 Hub.— Cnhn, (Coll. Am. Ent. Soc). 

 One 9 specimen. 



?.. Planiceps cubensis, n. sp. 



M(ib\ — Black, densely clothed with a pale sericeous pile ; anterior 

 orbits and clypeus silvery; tips of mandibles and the palpi dull testa- 

 ceous; anteniu« short and thickened; posterior margin of the protho- 

 rax arcuate, with a broad luteous band ; metathorax and coxae silvery, 

 the former well impressed down the middle ; wings hyaline, the a|)ical 

 third fuscous, with a strong golden reflection ; wing- cells as in Fig. 

 13 ; legs clothed with a dense cinereous pile, rather strongly spinose, 

 tibife and tarsi brownish; abdomen narrow, convex, about as long as the 

 thorax, subcompressed at tip, shining, subsericeous. Length 3i lines. 



7/a6.— Cuba, (Coll. Br. J. Gundlach, No. 85). 



One S speeiuien. 



