15 



generally smoother, and sometimes shining, on the disc, clothed 

 with scanty, short, pale hairs, finely transversely rugose in front, 

 at the sides, and posteriorly, the wrinkles stronger and more ex- 

 tended in some examples than in others. Front trochanters with 

 a longish thin stalk, chelar claw slender, nearly parallel-sided, 

 moderately curved. The lamellate denticles of the fifth tarsal joint 

 beneath form two rows closely set together. Abdomen polished 

 and very sparsely hairy, except the declivous basal part which is 

 very finely rugulose. and bears more abundant grey pubescence. 

 Length 4-4.5 mm. 



HAB. Nogales, Arizona; on weeds in September; two speci- 

 mens were bred in Honolulu from larvae obtained by Mr. Koebele 

 and sent me in cocoons. The vials containing them were num- 

 bered 251 1 and 2481. Under the latter number and from the 

 same host, Koebele himself bred male and female of Hcspcrodry- 

 niits arisonicus, the host being the same. The species is no doubt 

 parasitic on various Poecilopterine Fulgorids having been bred 

 from Mistharno phantia sonorana and the Issid, Ainphiscepa im- 

 niaculafa. 



Chalcogonatopns Perk. 



When I characterized this genus in Bulletin I, p. 46, I knew 

 only three Australian and one American species and formed a 

 subgenus {Eugouatopns) for the latter. The generic characters 

 there given require slight alteration, as in some of the species now 

 described the head is not concave above, and there are some inter- 

 mediate forms between Chalcogonatopns proper and its subgenus, 

 so that the latter is no longer necessary. 



In the table of species C. perdehilis is omitted, as the specimens 

 were overlooked until after it had been completed, but the fol- 

 lowing diagnosis will distinguish it from any other: Testaceous, 

 abdominal "petiole black, hind femora variegate, being paler on the 

 thin than on the basal thick part, the tips darkened; fifth tarsal 

 joint beneath with a short row of denticles, which occupies only 

 about half the length between the articular cavity and the terminal 

 hook ; size small 2.5-3.25 mm. 



Tables of species of Chalcogonatopns. 



I (22) Pronotumi in dorsal aspect very conspicuously divided 

 into a transverse anterior, and an elevated longer pos- 

 terior lobe ; in profile the dorsal outline is consequently 

 verv irregular in nearly all the species. 



