96 Mr. 11. E. Tiifuer on Fossorial Ilymenojjtera. 



before the middle of the radial cell^ recurrent uervure re- 

 ceived at a distance from the apex of the cubital cell equal to 

 the length of the cubital nervure. 



Hab. Kalamuuda, S.W. Australia ; February. 



The female is the type. I am not sure that these are 

 sexes of the same species, owing to the difference in colour 

 and in the sculpture of the median segment. The female is 

 nearest to bivittatus, Turn., but differs in the sculpture of 

 the mediau segment, in the absence of a band on the fourth 

 dorsal segment, and in the yellow instead of orange 

 markings. 



Crabro {Solenius) serenus, sp. n. 



5 . Nigra ; scapo, pronoto fascia utrinque, callis humeralibus, 

 mesopleuris aiitice macula magna, mesonoto macula parva utrin- 

 que angulis anticis, scutello macula utrinque, postscutello liuea 

 transversa, segmento mediano maculis 4 magnis, anguste sepa- 

 ratis, segmento dorsali primo macula curvata utrinque, secundo 

 macula transversa utrinque, tertio macula parva obscura utrinque, 

 femoribus anticis macula a])icali, tibiisque anticis externe basi 

 flavis ; alis fusco-hyalinis, apice obscure caerulescentibus, venis 

 nigris. 



Long. 12 mm. 



? . Mandibles tridentate, the inner tooth short ; clypeus 

 with a carina from the base branching in the middle and 

 enclosing an elongate-tiiangular apical area^ the angles of 

 the area produced into short teeth, a short tooth on each 

 side near the outer angles of the clypeus. Eyes separated 

 at the base of the antennae by a distance slightly exceeding 

 half the length of the scape, the second joint of the flagellum 

 as long as the first and third combined. Front between the 

 eyes concave ; posterior ocelli about equidistant from the 

 eyes and from each othei', farther from the posterior margin 

 of the head than from each other ; a broad groove along the 

 inner margin of the eyes near the summit. Pronotum with 

 the anterior margin slightly raised and produced into minute 

 spines at the anterior angles. Head and thorax minutely 

 punctured, subopaque ; basal area of median segment 

 smooth, divided by a crenulate longitudinal furrow, the sides 

 of the segment smooth and opaque. First abdominal seg- 

 ment gradually broadened from the base, longer than the 

 second, the apex about two-thirds of the breadth of the apex 

 of the second segment. Pygidial area very narrow. Hind 

 tibiae serrate. 



Hab. Api; New Hebrides; May {W. TV. Froggatt). 



