HYMENOPTERA. 249 



covered with golden pile ; the second segment opake, with its 

 apical margin and also the following segments smooth and shining. 



Hab. Australia. (Coll. F. Smith.) 



43. Sphex vidua. 



Male. Length 8-8^ lines. — Black : the face and cheeks densely 

 clothed with short bright silvery pubescence ; the head, thorax 

 and ])etiole with long erect yellowish-white pubescence ; the 

 mesothorax and scutellum closely punctured ; the metathorax, 

 the sides and thorax beneath, finely rugose ; wings hyahne, their 

 apex with a fuscous marginal cloud ; the nervures black. Abdo- 

 men : the petiole rather longer than the first segment, slightly 

 shining and covered with a changeable fine silky pile. 



Hab. Austraha. (Coll. W. W. Saunders, Esq.) 



This is probably the male of opulent a. 



44. Sphex fumipennis. B.M. 



Female. Length 10-12 lines.- — Black and shining : the face 

 strongly punctured, the vertex sparingly and more finely so ; the 

 face covered more or less with silvery pile, and having a number 

 of stiff black hairs on the clypeus. The pro- and mesothorax, as 

 well as the scutellum, moderately punctured ; a finely impressed 

 line on each side of the mesothorax over the tegulse; the meta- 

 thorax opake and thinly covered with griseous pubescence, that 

 on the prothorax, the sides, and beneath, is a mixture of fuscous 

 and griseous ; the legs shining ; the spines on the tibiae short and 

 stout ; the tarsi strongly spinose, the anterior tarsi ciliated out- 

 side ; wings dark fuscous, with the apical margins and also the 

 hinder margins of the posterior pair subhyahne. Abdomen glossy, 

 the apical segment rugose. 



The male only differs in being smaller. 



Hab. Australia (Adelaide). 



45. Sphex ephippium, n. s. PI. VL fig. 3. B.M. 



Female. Length 12 lines. — Black : the face densely covered 

 with pale golden pubescence, with a denuded space down the 

 middle of the clypeus ; the face thinly sprinkled with long hairs, 

 pale at their base and fuscous at their apex; the mandibles 

 rounded at their apex ; a spot of golden pile behind each of the 

 posterior ocelli on the margin of the vertex ; the cheeks with a 

 silvery pile and a thin covering of long cinereous pubescence. 

 The prothorax, the tubercles, a spot beneath the wings, and the 

 mesothorax above, covered with fine, short, pale golden pubes- 



