—_—o--:- °° °° °°» — 
‘Challenger ’ Hymenoptera. 411 
tured, and more or less yellowish beneath. Antenne, except 
the base of the scape, blackish above. Prothorax ferruginous- 
tawny, narrowly edged behind with yellow ; mesothorax black, 
with or without a U-shaped pale mark in the middle, often 
accompanied by a small one on each side; pectus mostly 
black, except some pale spots on the pleura; scutellum and 
postscutellum ferruginous-tawny ; metathorax either of the 
same colour or black, but always with a wide black groove in 
the centre. When the mesothorax is black there is always a 
reddish stripe on each side of the groove, beyond which is 
sometimes another red mark. Abdomen and legs yellowish 
tawny, the first segment of the abdomen and often some of 
the succeeding segments narrowly edged behind with yellow; 
the first segment sometimes marked with black at the base, 
the second nearly always with a triangular black spot at the 
base, and occasionally the succeeding segments are also marked 
with black at the base. The black markings are always more 
extended on the under surface than on the upper. Wings 
subhyaline, iridescent. 
Described from eight specimens taken at San Jago, Cape 
Verdes, on the 10th August, 1873. Not closely allied to any 
known species. 
40. Polistes Madoct. 
Long. corp. 6 lin. 
Female.—Black ; face ferruginous. Clypeus hairy. An- 
tenn ferruginous, black above in the middle of the flagellum, 
the apical portion more yellow; cheeks yellow, with an 
indistinct dusky spot on the lower part. Prothorax yellow 
above, with a large black streak running upwards on 
the sides; mesothorax black, unmarked; tegule, scutellum, 
postscutellum, two stripes on the back of the metathorax, 
and two narrower ones on the sides, back of the metathorax, 
knees, tibie, and tarsi yellow; coxe, femora, and hind 
tibies black; abdomen black, the first four segments bor- 
dered with yellow behind, both above and below, except 
on the first segment, on which it is hardly continued below, 
but it is continued forwards on the sides of all four segments ; 
hinder segments yellow, tinted with ferruginous. Wings 
yellowish hyaline. 
St. Thomas, March 1873. 
Apparently allied to P. modestus, Smith, and navajod, 
Cresson. 
41. Polistes carnifex. 
Vespa carnifex, Fabr. Syst. Ent. p. 865 (1775). 
Honolulu, May 1875. 
