MR. F. WALKER ON DIPTERA COLLECTED AT GrILOLO, ETC. 



the tibiae ; wings nearly limpid, cinereous along the costa and towards 

 the tips ; veins black, tawny towards the base ; halteres with piceous 

 knobs. Length of the body 8 lines ; of the wings 12 lines. 



Fam. SYKPHIDiE, Leach. 



Gen. Eristalis, Latr. 



9. Eristalis splendens, Leg. See Vol. III. p. 95. 



Earn. MUSCID.E, Latr. 



Subfam. Sarcophagides, Walk. 

 Gen. Sarcophaga, Meigen. 



10. Sarcophaga sericeo-nitens, Dol. See Vol. V. p. 158. 



Subfam. Muscides, Walk. 

 Gen. Muse a, Linn. 



1 1 . Musca costalis, Dol. See Vol. V. p. 159. 



Subfam. Ortalides, Holiday. 

 Gen. Oxycephala, Macq. 



12. Oxycephala alienata, n. s. Mas. Rufescenti-fulva, capite 

 nigro biguttato, metathorace pectoreque nigris, abdomine fusiformi 

 basi supra nigro, femoribus basi nigro notatis, alis fuscis dimidio 

 postico cinereo. 



Male. Reddish tawny ; head with a black dot in front of the base of 

 the antennae; face with two grooves; antennae almost reaching the 

 epistoma ; 2nd joint clavate ; 3rd linear, rounded at the tip, broader 

 but not longer than the 2nd ; mctathorax and pectus black ; abdomen 

 fusiform, longer than the thorax, black above towards the base; legs 

 robust ; femora marked with black at the base ; wings brown, hinder 

 half cinereous ; veins tawny, discal transverse vein slightly undulating, 

 parted by hardly half its length from the border and by much more 

 than its length from the pncbrachial transverse. Length of the 

 body 7 lines; of the wings \G lines. 



Gen. Dacus, Fair. 



13. DACUS ABSOLUTES, II. s. Faun. Oinereus, capite fulvo, facie nigro 

 hignttata, antcnn;s longis arista nuda, thoracis latcribus scutelloque 

 f'ulvis, abdomine fasciii interruptii nigris, apice piano stylato-laneeo- 

 lato, alis cinereis costa fuscescente. 



Female. Black, with hoary (omentum ; bead tawny; face oblique, with 

 n black 'lot in the groove on each lide ; antenna: quite reaching the 

 < pi stoma ; 3rd joint very long, conical at the tip; arista bare; sides 

 of tin: thorax, humeral ealli and seutelliim tawny ; abdomen tawny, 

 oval, with the exception of the four apical segments, which arc shining 

 and form a flat lanceolate style; basal part with four interrupted black 



