98 THE ENTOMOLOGIST. 



shorter than twelfth ; mesothorax exceedingly coarsely punctured, dull 

 red, with one broad black band ; scutellum bilobed, but ratber small ; 

 pleura largely red ; metatliorax mtirely black : ventral surface of abdo- 

 men red without yellow markings ; first dorsal segment black right 

 across at base ; b. n. going a considerable distance basad of t. m. ; 

 mandibles simple. 



Hab. Glencarlyn, Virginia, at flowers of Ceanotlius, June 

 21st (Nathan Banks). On the same day and flowers, at the same 

 place, Mr. Banks took N. jjerplexa, Cresson. 



Nomada hanksi, sp. nov. 



2 . Length, 8 mm. or a little over ; black, the markings of the 

 head and thorax entirely dark ferruginous ; abdomen with bright 

 lemon-yellow markings ; legs red, partly suffused with black. Face 

 broad ; clypeus, a small supraclypeal mark, labrum, mandibles (except 

 apex), and lateral marks extendtnr/ over siDiviiit of eyes, with narrow 

 posterior orbits, all ferrnginous ; mandibles simple ; antennae dark 

 reddish beneath, blackened above, third joint about as long as fourth, 

 flagellum stout ; mesothorax very coarsely and densely punctured, 

 entirely black ; scutellum moderately bigibbous, with a red spot on 

 each prominence ; metathorax all black ; pleura with a large red patch 

 below, and a red spot above ; tubercles and tegulae red ; wings dusky 

 reddish ; stigma ferruginous, nervures fuscous, b. n. just basad of t. m. ; 

 legs red, the middle and hind femora mainly black behind and beneath, 

 hind tibiae blackish behind ; anterior coxae with a small tubercle, but 

 no spine ; abdomen very finely punctured, black ; first segment with 

 a narrow yellow band broken into four parts ; second with a very 

 broad yellow band, much broadest laterally, and rather widely inter- 

 rupted in the middle ; third with a large transverse mark, notched 

 below, on each side ; fourth, the band entire but narrowed in the 

 middle, and deeply notched behind at the sides ; fifth with a large 

 quadrate patch, emarginate in front ; venter red, the hind margins of 

 the segments broadly dark, one or two slightly indicated yellow dots. 

 There is some resemblance in the colour and markings to A'. ijraciUs, 

 Cresson, known only in the male," but I do not think it can be regarded 

 as the female of that species. In Robertson's table it runs to iV. 

 placida, but is larger, and differs conspicuously in the abdominal mark- 

 ings. It is smaller than .V. electa, and that species {fide Viereck) has 

 the b. n. going far basad of t. m. ; it also has some yellow on the legs. 

 N. electella differs in the face-markings, tegulte, &c. 



Hab. Glencarlyn, Virginia, October 10th (Nathan Banks). 



Nomada infantula, sp. nov. 

 2 . Length about 5 mm. ; red, with a broad black band on the 

 mesothorax and metathorax ; mandibles simple ; a blackish spot be- 



* I examined the type of gracilis in the Cressou collection. It is about 

 8 mm. long ; legs red and black ; thorax blagk without marks ; anterior edge 

 of clypeus, lower corners of face and spot on base of mandibles yellow ; apical 

 plate of abdomen notched ; second segment with a very large yellow mark 

 on each side, third with a narrow interrupted baud, fourth with a pair of 

 spots, fifth and sixth each with a spot. 



