Mr. F. Smith's New British Nomadce. xli 



Art. VII. — Descriptions of two New Species of British Nomadce. By Frederick 

 Smith, Esq., Curator to the Entomological Society. 



NOMADA ARMATA, Schaffer. 



Female. — (Length 5^ lines). Black : head, the mandibles, margin of the clypeu c , 

 a dot at the vertex of the eye, and the antennae, ferruginous, — the latter have the 

 scape black above and four or five joints at the apex fuscous, the apical joint bright 

 ferruginous ; a little silvery pubescence on the face. Thorax, the collar narrowly 

 edged with ferruginous ; the tubercles, tegulae, two spots on the scutellum and a line 

 beneath them, ferruginous ; posterior coxae and the metathorax laterally clothed with 

 silvery pubescence ; a spot of the same beneath the wings ; legs red ; all the coxae and 

 trochanters at their extreme apex, all the femora beneath at their extreme base, the 

 posterior likewise behind, black ; the posterior tibiae at their apex within and also the 

 basal joint of the tarsi stained with fuscous. Abdomen ferruginous ; the base black ; 

 the second segment has an ovate yellow macula ; the second and third have laterally 

 a narrow transverse line. 



Male. — (Length 5^ lines). Black : head, antennae ferruginous, the basal joint 

 black ; the mandibles yellow, their tips ferruginous ; the labrum black, with a sharp 

 tooth in the middle of its base. Thorax, the tegulae, tubercles and legs ferruginous ; 

 the coxae, trochanters, and femora (except their apex above), black ; all the tibiae have 

 a black stripe within ; the apical margins of the wings fuscous. Abdomen ferrugi- 

 nous ; the base black ; the second segment has a lateral, large, ovate, yellow macula; 

 the third and fourth have a lateral oblong yellow spot at their basal margins ; the 

 fifth and sixth have a transverse yellow band, sinuate above ; beneath, the second to 

 the fifth have a short transverse narrow line in the male, and the third to the sixth a 

 central black dot. 



I have no doubt of this being the N. armata of Schaffer : in general aspect it re- 

 sembles N. ochrostoma, and, according to Schaffer, " it has a larger head ; the 

 pubescence is paler ; the scape only of the antennae is black ; the labrum black, with 

 a sharp tooth at its base in the centre." In all these particulars our male agrees with 

 armata. This fine addition to the British fauna was first captured by Dr. Leach, at 

 Bantham, Devon, some years ago. A single specimen of the female is in the British 

 collection at the British Museum. The male was captured by Mr. Samuel Stevens, 

 and presented to me by that gentleman. There is a pair of this species in the na- 

 tional collection, from North America. 



NOMADA RUBRA. 



Female. — (Length 4i lines). Ferruginous : mandibles yellow ; a spot at the base 

 of the antennae, the tips of their scape above, and the cheeks, black, with a ferru- 

 ginous line behind the eyes. Thorax, the tubercles yellow ; the metathorax and the 

 disk black, with a ferruginous line passing over the tegulae to the scutellum, both 

 of which are also ferruginous ; the metathorax laterally and the posterior coxae, whieh 

 are black, clothed above with silvery pubescence. Abdomen entirely ferruginous, im- 

 maculate ; the apieal segment narrowly edged with silvery pile. 



VIT. APPENDIX. i I 



