590 Insects. 



Sp. 2. NOMADA RUFIVENTRIS. 



Apis rufiventrisy Kirby's Mon. 



Female, (length 4 to 5j lines). Head black ; nose,* and a line 

 encircling the eyes, rufous ; mandibles rufous, tips piceous ; antennae 

 rufous, with a black stain on the scape behind : thorax black ; the 

 tegulae, and a spot below the tubercle, rufous ; the tubercles and two 

 spots on the scutellum, yellow : legs rufous ; the posterior coxae, and 

 a stain behind on the posterior femora, black : abdomen, the first 

 segment rufous, black at the extreme base and apical margin, the 

 second, third and fourth yellow, within the basal and apical margins 

 more or less black ; a rufous stain in the centre of the second and 

 third segments, sometimes obsolete, the fifth segment entirely yellow, 

 beneath rufous ; the apical margins of the segments indistinctly pi- 

 ceous. In rare instances the yellow spots on the scutellum are nearly 

 obsolete. 



The male is the Apis Lathburiana of Kirby, (4 to 4|- lines). Head 

 black ; the nose, mandibles, and scape in front yellow, a dark stain 

 on four or five of the basal segments behind : the thorax has the te- 

 gulae, two indistinct spots on the scutellum, the tubercles, and a round 

 spot beneath them, yellow : the coxae black, the anterior pair yellow 

 in front ; the intermediate femora have a slight stain beneath, the pos- 

 terior pair black, rufous in front, the four anterior legs otherwise yel- 

 low, variegated with slight rufous stains, the posterior pair rufous, 

 yellow at the extreme base of the tibiae : the abdomen has the first 

 segment as in the female, the rest yellow, with dark piceous bands on 

 their apical margins ; beneath, the first segment rufous ; the base and 

 apical margin black ; the second and third are dark piceous at the 

 base and apex, with yellow bands between ; the fourth has the basal 

 half yellow, the apical rufous ; the fifth yellow, with a rufous stain in 

 the centre. In rare instances there are two bright yellow spots on 

 the scutellum, but they are usually very indistinct. 



This is a very beautiful and local species. Hampstead Heath is 

 the only locality in which I have taken it. It appears about the mid- 

 dle of April ; yet, notwithstanding the most diligent search, two or 

 three seasons sometimes occur without meeting with it. 



Sp. 3. Nomada Marshamella. 

 Apis Marshamella, Kirby's Mon. 



Female, (length 4 to 5 lines). Black : head, the labrum and margin 

 * When I use the term nose, I include the labrum and clypeus. 



