218 THE ENTOMOLOGIST. 



teriorly ; anterior tibia and basitarsus each with a large white patch 

 on outer side, and long black hairs ; middle femur with a pair of 

 almost or quite contiguous white spots behind beyond the middle ; 

 hind femur with a large triangular white patch above at apex ; middle 

 tibia with a very large white patch on outer side ; hind tibia with a 

 smaller, subtriangular, median patch ; hind basitarsus white on outer 

 side except the basal fourth ; anterior and middle basitarsi with a 

 little white hair on outer side ; abdomen with more or less round, 

 widely separated, white spots, one at middle of base of first segment, 

 four subapical on segments one to three, and two each on segments 

 four and live ; second and third ventral segments with a white spot 

 on each side. In my table i. Bull. Amer. Mus. Nat. Hist, xxiii. p. 282, 

 this runs out because of the different ornamentation of the tibite. 

 Compared with C. macleayi, CklL, it differs by the white spots not 

 being stained with ferruginous, the ornamentation of pleura, the 

 anterior wings dark practically to base, &c. The ornamentation of 

 the face is rather peculiar, consisting of a large thick U in white 

 (leaving the lower half of the clypeus dark), and small geminate white 

 spots below the antennae. 



Hah. Mackay, Queensland (Turner, 450). 



Crocisa ridleyi, sp. nov. 



5 , Length about 12^ mm. ; black with bluish-white markings, 

 on face quite white, but on abdomen, legs, &c., a very delicate pale 

 bluish ; scutellum W-like, but the median angle much greater than a 

 right angle ; anterior wings dark fuscous, with the usual spots, the 

 basal region largely hyaline, but the fuscous extending strongly along 

 the basal nervure and the region of the transverso-medial, but a 

 sharply defined hyaline line along the upper side of the anal nervure, 

 the anal cell also mainly hyaline ; posterior wings hyaline, slightly 

 brownish ; pygidial plate with a very sharp median carina ; clypeus 

 densely punctured ; face covered with white hair, scanty on upper 

 part, and wanting on lower third of clypeus ; mesothorax with a light 

 margin, broken (abraded ?) behind ; median mesothoracic stripe broad, 

 narrowing posteriorly, ending about middle of disc, with a spot on 

 each side ; scutellum sparsely punctured, black, much white hair 

 coming from beneath the notch ; pleura light-haired, with a largo 

 central very strongly punctured bare patch ; anterior and middle 

 femora with light hair behind ; tibiae light-haired on outer side, 

 anterior ones with a shining apical bare spot, hind ones with about 

 the apical third black-haired ; tarsi light-haired on outer side, even 

 on the small joints ; abdomen obscurely metallic, especially on first 

 segment ; first segment with broad basal and subapical bands, inter- 

 rupted medially, the two joined by a vertical band on lateral margins ; 

 the other segments with broadly interrupted bands, that on the 

 second having a lateral process extending to base of segment ; ventral 

 segments two to four with much light hair at sides. 



Eesembles C. decora, but known by the paler markings, 

 the posterior band of first segment only rather narrowly inter- 

 rupted, the light margin of mesothorax continuous laterally, &c. 



