in the Collertion of W. W. Saunders, Esq. 277 



Female. — Gilded yellow. Head black between the eyes; front 

 flat, with a short ferruginous stripe extending from the base of 

 the antennae ; mystax with a few pale gilded bristles. Proboscis, 

 palpi and antennae tawny ; third joint of the antennae sub-lanceo- 

 late, rather longer than the first and the second together. Thorax 

 tawny ; two very broad ferruginous cinereous-tinged stripes ; 

 three slight somewhat incomplete pale gilded stripes, the lateral 

 pair between the ferruginous stripes and the pectus, which is 

 partly ferruginous; scutellum gilded yellow. Abdomen black, 

 with a gilded yellow band on the hind border of each segment. 

 Legs tawny, stout, long, with black spines ; posterior femora 

 black towards the base. Wings cinereous, with tawny stripes 

 along the black veins. Halteres pale yellow. 



Length of the body 10 lines; of the wings 18 lines. 



This species has some resemblance to D. Mexicnnus, Macq., 

 but may be distinguished by the colour of the thorax. 

 Mexico. 



Dasypogon gelascens. 



Mas. — Argenteo-albus, capite subtus alLo-piloso, epistomate 



piano, mystace albo, antennis nigris, thoracis disco cinereo, 



abdomine fasciis duabus laiis abbreviatis nigris, pedibus 



validis albo-setosis, alis sub-cinereis, haheribus albis. 



Mule. — Pure silvery-white : head with white hairs beneath ; 



epistoma quite flat; mystax with white bristles; proboscis and 



antennae black ; disk of the thorax cinereous ; abdomen with two 



broad abbreviated black bands ; legs stout, with white bristles ; 



ungues black ; wings sligluly greyish ; veins black ; halteres 



white. 



Length of the body 4 lines ; of the wings 7 lines. 

 Mexico. 



Dasypogon proclivls. 

 Mas. — Niger, capite antico rufescente, mystace albido, antennis 

 basi ferrugineis, thorace cinereo, abdomine rufo, maculis 

 quatuor lateralibus apice ventreque nigris, guttis quatuor 

 lateralibus albidis, pedibus fulvis validis, tarsorum ariicuiis 

 apice nigris, alis fuscis postice cinereis, halteribus ru- 

 fescentibus. 



This and the two following species belong to the group of D. 

 Spectrum. See Cat. Dipt., 2nd Ser., ii. 471. yl/o/e.— Black. 

 H( ad reddish in front ; mystax with ten whitish bristles. An- 

 tennae ferruginous towards the base ; third joint nearly linear, 



