99 



iiiarj^ins ou third and fourth segiiieiits are plumose. First segment, as 

 viewed from above, long trapezoidal, coarsely rugoso-punctate, lateral 

 tubercles large, its k ngtli less than twice breadth at apex, with plumose 

 hairs on basal margin only, rather strongly constricted at juncture 

 with second segment, ventral median ridge with a stout tooth near the 

 basal end; the last two dorsal segments darkened; the last dorsal segment 

 as long as wide at base, opaque, the disc broadly longitudinally depres.^- 

 ed on either side, minutely punctured near the subtruueate blackened 

 tip, on either side of which is a tuft of fine golden hair. 



The type of this species was taken in Ormsby county, Nevada. 



OX SOME HYMENOPTERA COLLECTED BY PROF. C. F. BAKER 



IN NICARAGUA. BY P. CAMERON. 



MUTILLIDAE. 



3427 Sphaeropldhalma anthracia Cam-. 



Biol. ('ent. Amer., Hymen, il, 352. Chinandega. 

 1708 Sphaerophthalma caroli sp. nov. 



Black, the front, the vertex broadly — the mark rounded and narrowed 

 behind, the thorax above, except for a triangular black mark in the 

 centre at the base, the mark occupying the entire base of the thorax 

 and with its apex rounded, the apical mark breadly rounded above ex- 

 tending to the middle of the metanotum which has the apical half 

 entirely black, two moderately large oval marks on the base of the 

 second abdominal segment and two double their size nearer their apex, 

 of reddish orange pubescence; the sides of the third, fourth, and fifth 

 segments broadly covered with silvery pubescence, darkened slightly 

 with a golden tint; the pygidium covered with long dark fulvous 

 pubescence and transversel,y striated; the hair on the sides of the head, 

 thorax, and ventral surface silvery. Female. Length 12 mm. 



The third joint of the antennae is as long as the following two united; 

 the fourth and fifth are brownish beneath. Head wider than the thorax, 

 the temples as long as the eyes; the occiput almost transverse, not keeled, 

 the sides rounded. Thorax fiddle-shaped, the anterior and larger part 

 wider than the posterior, rounded, the sides without distinct teeth. 

 Mesonotum rugosely punctured, the metanotum reticulated, the sides 

 in the middle with three or four small teeth. Pleurae smooth, the apex 

 with a punctured band, which is dilateil in the middle. Calearia and 

 tarsal spines bright rufous. Abdomen sessile, as long as the head and 

 thora»x united. 



Comes near to . S. phedyma Cam., and to S. verticalis Sm., 

 with which it agrees very closely in the arrangment of the pubescent 

 markings. The former may be known from it by the occiput being 

 clearly transverse and with the sides projecting into a keel, the orange 

 on the metanotum too, is not continuous but divided broadly into two 

 parts; the latter has a stout, longish central tooth with a shorter rounded 



