156 C. R. Osten Sacken: 



The sanie structure oceurs in Curupira cf (Dr. F. M. fig. 10). 

 Siniilar structures aniong Limnobina, comi). Mon. IV, p. 29. In 

 L/ip. ein. 9 tlie structure is nearly the same, only the curvature 

 is shallower (Mik, in litt.). Bleph. fuscip. cf has last Joint 

 straight (Mik); lAp. yosemite cf has the same structure; in 

 Dr. F. M. 1881, fig. 8 the last Joint of the flowersucking Q is 

 represented in the same way. 



The relative length of the tarsal joints of Apistomyia is incorrectly ren- 

 dered in Bigot's figure (Ann. S. E. Fr. 1862, tab. I, l 1): they are 

 gradually dimiuishing frora the first to the last. Comp, the communi- 

 cation of Bigot to Haliday, in Loew, 1869, p. 100. 



Spurs. The two spurs on the hind tibiae are described as rather 

 long in Hammat. (sehr gross, L\v. 1877, p. 75) and in Apist. 

 (comp. Haliday 's Remarks, in Loew, 1869, p. 100: „two very 

 distinct, rather elongated spurs." In Bigot's own descript. Ann. 

 1862, p. 110 he says: „tibiis haud calcaratis"! And the figure 

 shows minute spurs on all the tibiae!). They are short in Bihioc. 

 („Short and stout" O.S. Dipt. Colorado) and Affathon {? „zwei 

 kräftige Sp." Röder); of nnequal length in Bleph. (Loew, 1877, 

 p. 65, line 13), Lip. yosemite (O.S.), and in the bloodsucking 

 female of Snowia (Dr. F. M., 1881, fig. 11). There is only a 

 Single spur on the hind tibiae \\\ Faltost. (O.S. 1878), and in 

 Lip. ein. (O.S. and Loew, 1877, p. 65, line 14). 



On the raiddle tibiae I have noticed minute spurs in Bihioc. 

 Such are also figured in the Curupira d (Dr. F. M. 1881, f. 7). 

 Other data are wanting. 



No spurs in Hapal. (Lw. 1877, p. 79). 



Ungues. (Compare above, under § A.) In Lip. ein. cf the ungues 

 are somewhat curved and provided with a comblike row of bristles 

 on the underside (Loew, 1877, p. 65; also my Observation of a very 

 distinct pectination on all the ungues); also m Hammat. <f (Loew, 

 1877, p. 75); and in Curupira cf (Dr. F. M., fig. 10). Bleph. 

 fasc. has more straight ungues, without pectination (Mik in litt.). 

 Lip. yos. cf has rather short ungues; proximal half of them 

 stout. The straight last Joint of the tarsi and the short curved 

 ungues of this species show a striking likeness to the correspon- 

 ding parts of the tarsus of the flowersucking female of Dr. F. M., 

 as represented on his fig. 8. No pectination. 

 Such structures of the last joints of the tarsi and the ungues seem 

 to be nearly the same on the three pairs of legs: but in some 

 cases they are less distinct in one pair than in the others. 



