MIDAS.— EHYNCHOCEPHALTJS. 73 



appressed rufous pubescence is perceptible on the red ground, as also on the black 

 ground of the fifth segment; last segment black, beset with black pile. Legs black; 

 hind femora moderately incrassate, with the usual rows of spines ; tibia? with hooks at 

 the end. Wings infuscated, but less dark than in M. clavatus ; venation normal. A 

 single male. 



N.B.— A female from Dallas, Texas, which apparently belongs to this species, has 

 no rufous tomentum on segments 2-5 of the abdomen ; the wings are less dark, more 

 reddish-brown. A female in the Berlin Museum, from the same locality, has the facial 

 orbit more white. 



The other Midaidse previously described from Mexico (there are none from other 

 parts of Central America) are : — 



Midas annularis, Gerst. Stett. ent. Zeit. 1868, p. 100. 



basalis, Westw. Arc. Ent. i. p. 53; Bellardi, Saggio &c. ii. p. 10. 



bitamiatus, Bellardi, 1. c. ii. p. 7, t. 1. f. 1.— Playa Vicente, Mexico, p.lol *; fldl 



interrupt™, Wiedem. Monogr. Mid. p. 46, t. 53. f. 12. (Syn. M. tri- 



cinctus, Bellardi, 1. c. ii. p. 8, t. 1. f. 2.) 



militaris, Gerst. 1. c. p. 99. (Syn. M. vittatus, Macq. Dipt. Exot. 



Suppl. iv. p. 60, t. 4. f. 6 ; Bellardi, 1. c. ii. p. 7.) (A male and a 

 female in the British Museum agree with the descriptions; they 

 were collected by M. Salle.) 



senilis, Westw. Arc. Ent. i. p. 52. 



subinterruptus, Bellardi, 1. c. ii. p. 10, 1. 1. f. 3.— Patzcuaro, Mexico. 



lavatus, Gerst. 1. c. p. 96. (I am not quite sure whether this is a 



synonym of M. xanthojpterus, Loew, as I stated in my Catal. N. Am. 

 Dipt. p. 85.) 



tibialis (Wiedem. Monogr. Mid. p. 42, t. 53. f. 6.— Maryland, Michi- 

 gan), Bellardi, 1. c. ii. p. 6. (p job 



incisus (Macq. Dipt. Exot. ii. p. 11, t. 1. f. 1.— Carolina), Jaennicke, 



Neue exot. Dipt. p. 46. 



Pam. NEMESTKINIDJE. 



RHYNCHOCEPHALUS. 



Rhynchocephalus, Fischer, Mem. Soe. Imp. des Natur. de Moscou, p. 217 (1806). 



1. Ehynchocephalus ? 



Hab. Guatemala, San Geronimo (Champion). 



A single female. Not unlike R. volaticus, Willist. (Canad. Ent. 1883, p. 71), from 

 Florida, but the size is a little larger (13-14 millim.) ; wings comparatively longer 

 biol. CENTE.-AMER., Dipt., November 1886. i 



