298 PROCEEDINGS OF THE ACADEMY OF [1896. 



Tiphia solitaria Sm. 



Chapada (May and November) ; Santarem. Four specimens. 

 Smith doubtfully referred solitaria to parallela as the latter's male, 

 in which he was probably correct. 



In addition to the two species of Tiphia above noted the collec- 

 tion contains, perhaps, five others, which I have not been able to 

 place in consequence of the many incomplete descriptions that exist 

 of neotropical forms. Smith's descriptions of Tiphia are almost 

 useless. 



Epomidiopteron Julii Rom. 



Chapada (December and February) ; Santarem. Four specimens, 

 all females. 



Scolia (Discolia) nigrescens n. sp. 



Deep !)lack, shining ; mandibles red ; wings black, with a strong 

 blue reflection ; tibi?e and tarsi reddish ; base of second ventral seg- 

 ment with two small tubercles. 



$ . — Head with deep, sparse punctures, closest at base of antennae 

 and on occiput; anterior margin ofclypeus truncate; scape sparsely 

 punctured ; thorax coarsely punctured, tolerably closely so on pro- 

 thorax and mesopleune, dorsulum and scutellum impunctate me- 

 dially, upper segment of middle segment in middle strongly punc- 

 tured, posteriorly depressed, and sparsely punctured ; legs more or 

 less reddish, their amount of black and red variable, the spines black, 

 longer spur of hind tibia? equal to about one-third the length of the 

 first hind tarsal joint ; abdomen strongly punctured, particularly on 

 the first and second dorsals, dorsals 3-5 almost impunctate except at 

 base, where the punctures are close and small, dorsal segment six 

 with cribrose punctures and coarsely hirsute, ventrally the abdomen 

 has large, sparse punctures, out of which project black hairs; 

 pilosity of the body black and sparse ; base of second ventral with 

 two small, transverse tubercles. Length 22-24 mm. 



$ . — Similar to 9 in coloration except that the legs are usually 

 entirely black ; antennae scarcely as long as head and thorax, stout ; 

 abdomen with all the segments punctured alike, the punctures being 

 well separated, but not sparse ; joints of medial and hind tarsi within, 

 at apex, with a small bunch of grayish hairs. Length 16-20 mm. 



Chapada (November, December and March). Fourteen speci- 

 mens. Near monticola Cam., from Mexico, but is distinct in the 

 tuberculate second ventral segment, the medially impunctate dor- 

 sulum and scutellum and differently colored legs. 



