1898.] ■ 



81- 



2— 



The specimens from which the above descriptions are made have 

 been divided between the Science and Art Museum, Dublin, the 

 British Museum (Nat. Hist.), London, and the Museum of the Insti- 

 tute of Jamaica. 



EXPLANATION OF PLATE Til. 



Fig. 1 — Trochopus marinus, gen. et spec. nov. ; female, x 12, upper view. 



head, prothorax, rostrum and basal segment of antennae, 



side view, x 24. 

 end of tibia, and tarsus of front leg, x 100. 

 second tarsal segment of second leg, from above, x 100. 



„ „ „ from side, x 50. 



end of tibia and tarsus of third leg, x 100. 

 female, under view, x 12. 



male, hinder abdominal segments, from above, x 12. 

 „ „ „ from below, x 12. 



„ genital segments, from below, x 48. 

 larva, x 12. 



„ front foot, X 100. 

 system of branched ciliated hairs from foot of second 

 pair, X 200. 



Dublin : January, 1898. 



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FRAUENFELBIA RUBRICOSA, Mg. : AN ADDITION TO THE 

 BEITISH MUSCIDM {TACEINIBM OF VEREALL'S LIST). 



BY EENEST E. AUSTE]vr. 



FeATJENFELDIA ET7BRIC0SA, Mg. 



Tachina ruhricosa, Mg.,Syst. Beschr.,iv, p. 305 (1824). Rhinophora ruhricosa, 

 id., I. c, vii, p. 210 (1838). Tachina nigritarsis, Zett., Dipt. Scand., iii, pp. 1169, 

 1170 (1844) ; viii, p. 3249 (1849) ; Mrticornis, id., I. c, pp. 1172, 1173 (1844) ; viii, 

 p. 3250 (1849). Dexia tachiniformis , id.. I.e., iii, p. 1280 (1844) ; viii, pp. 3250, 3266 

 (1849). Tricogena Truquii, Rond., Dipt. Ital. Prodr., v, pp. 157, 158 (1862). Fhyto 

 rubricosus, Schin., Faun. Austr. Dipt., i, p. 548 (1862). Frauenfeldia (gen. nov.) 

 ruhricosa, Egger, Verb. z.-b. Ges. Wien, xv, pp. 297 — 298 (1865) ; rubricosa,'BvB.\ier 

 and von Bergenstamm, Denkschr., math.-naturw. CI. k. Akad. Wiss. Wien, Ivi, p. 

 121, Taf. vii, fig. 172 (1889) ; Iviii, p. 413 ; Ix, p. 224 ; ruhricosa, Brauer, Yerh. z.-b. 

 aes. Wien, xliii, p. 499 (1893). 



A single male of the above species was taken at Tring, Herts, at 

 the beginning of July, 1897, by my friend Mr. A. Piffard, who has 

 most unselfishly presented it to the British Museum. As the species 

 is only mentioned, but not described, by Schiner, while, owing to 

 Brauer and von Bergenstamm having overlooked the fact that its facial 



