116 apid^;. 



Yar. /3. The yellow spots on the first segment obsolete, those on the 

 fourth and fifth much interrupted, forming a series of spots. 



The fascia on the ventral segments vary in being one, two, or 

 three. 



This appears to be an undescribed species ; it was discovered by 

 Mr. Bridgman in the spring of 1875, when only a few specimens 

 were taken and submitted to me for examination. At first sight the 

 insect appeared possibly to be a variety of Nomada lateralis ; but on 

 examination and comparison marked specific differences presented 

 themselves. In iV. lateralis the antennae are longer than the thorax ; 

 in the new species they are scarcely as long ; the latter has also 

 yellow tubercles, no longitudinal ferruginous stripes on the meso- 

 thorax, and only two spots on the scutellum ; JV. lateralis has 

 red tubercles, red lines on the thorax, and the scutellum is 

 entirely red. It also somewhat resembles JSf. fabriciana; but its 

 red labrum and mandibles, together with its yellow tubercles and its 

 not having the subapical joints of its antennae black above, separate it 

 from that species*. The specimens I have received were captured at 

 Brundall, near Norwich, at the beginning of May this season ; but 

 last year they appeared about the middle of April. 



6. Nomada ochrostoma. 



JV. atra ; labio, clypeo facieique lateribus ferrugineis, thorace lineis 

 tribus longitudinalibus atris, scutello rufo, abdomine flavo-macu- 

 lato. 



Nomada ochrostoma, Schaff. Germ. Zeits. i. 280 <$ . 



Smith, Zool. ii. 596 ; Bees Great Brit. 122 <$ £ . 

 Apis ochrostoma, Kit-by, Mon. Apum Angl. ii. 209 tf . 

 Apis hillana, Kirby, lib. cit. 208 var. tf . 

 Nomada vidua, Smith, Zool. ii. 602 £ • 

 Nomada punctiscuta, Thorns. Hym. Scand, ii. 193. 



Female. Length 4-4| lines. — Head and thorax black, the labrum, 

 mandibles, clypeus, orbits of the eyes, and a line passing behind 

 the ocelli ferruginous ; the antennae ferruginous ; the scape usually 

 more or less black above. Thorax — the collar, tubercles, a large 

 patch beneath the wings, a smaller ovate spot on the breast beneath, 

 two longitudinal stripes on the disk of the thorax, an epaulet 

 over the tegulae, reaching the scutellum and the postscutellum, 

 red ; the wings subhyaline, the apical margins having a dark fus- 

 cous cloud, and a pale macula beyond the third submarginal cell ; 

 the legs red ; the coxae, trochanters, and femora beneath black. 

 Abdomen ferruginous, black at the base ; the second segment has 

 on each side a large rounded macula, the third a minute spot, the 

 fourth an interrupted transverse band, and the fifth a square patch 

 of yellowish white ; the margins of the segments usually dark rufo- 

 piceous : beneath immaculate. B.M. 



* The male closely resembles some varieties of JV. ruficomis ; but the scape of 

 its antennae is entirely black. 



