602 Insects. 



Sp. 17. Nomada signata, Jurine. 



Female, (4j to 5j lines). Head black ; mandibles, labrum, clypeus, 

 a minute spot in the centre just below the base of the antennas, a line 

 encircling the eyes, and the antennae, rufous : thorax black ; the col- 

 lar, tubercles, a minute spot under the wings, a large patch on the 

 breast, a spot before the intermediate coxae, the tegulae, four lines be- 

 tween them, and the scutellum, rufous ; below the scutellum, on the 

 metathorax, are two curved patches, and a patch outside of each, yel- 

 low : legs rufous ; base of all the femora black beneath : abdomen 

 yellow, the first segment with black margins and a central rufous fas- 

 cia, the latter bearing two yellow spots, which are sometimes united, 

 the margins of all the other segments rufo-piceous, forming narrow 

 dark fasciae ; beneath rufous, the second, third and fourth segments 

 with abbreviated yellow fasciae, the margins dark rufo-piceous in the 

 centre. 



Male, (4 J to 5 J lines). Head black ; mandibles, labrum and mar- 

 gin of the clypeus yellow ; the antennae rufous beneath, rufo-piceous 

 above : thorax, the tegulae and two spots on the scutellum rufous ; 

 the tubercles yellow, sometimes stained rufous ; a small triangular 

 spot on the breast ; the coxae black, their apex rufous ; anterior and 

 intermediate femora black at their base beneath, the posterior black 

 beneath, except their extreme apex ; tibiae and tarsi rufous : abdomen 

 as in the female, excepting the first segment, which is black at the 

 base, forming a central dentate patch ; the apical margin black, with 

 a rufous fascia between, which has two black spots upon it ; otherwise 

 as in the female. 



This extremely beautiful insect was, I believe, introduced to our 

 Fauna by Mr. Shuckard, captured by him on Hampstead Heath, 

 where I have frequently taken it, also at Highgate ; but I never met 

 with it in any other locality. It appears about the middle of April. 



Sp. 18. Nomada vidua. 

 Female, (4 to 5 lines). Head rufous ; a black oval patch enclosing 

 the stemmata, joined to another similar patch, the lower margin of 

 which extends to the base of the antennae, below which is a black 

 forked patch, enclosing a round rufous spot ; the head black behind, 

 with a broad rufous line behind the eyes ; antennae rufous, the scape 

 slightly stained behind : thorax black ; the collar, tubercles, a large 

 patch on the breast united to a circular patch in front of each inter- 

 mediate coxa, the tegulae, four lines between them, the scutellum, two 

 minute spots immediately beneath, and two minute ones wider apart, 



