270 NOVITATES ZOOLOGKAE XXI. 1914. 



Lasiopticus albomaciilatus Macq. 



{Dipt. Exot. ii. 2. p. 86. Tab. 15. eg. 6 [Syrphus.] (1842).) 



One ? from between Tonggonrt and EI Oued, Algerian Sahara, April 1909 

 (Hon. L. W. Rothschild and Dr. E. J. 0. Hartert). 



TACniNTDAE. 



TACHININAE. 



Genus GONIA Mg. 



Gonia bimaculata Wied.* 



{Zoologhches ilagnzin, Bd. i. Stuck, iii. p. ifi (1819).) 



One ? from EI Meksa, south of El Gole'a, Algerian Sahara, 2. iv. 1912 (Dr. 

 E. ,T. 0. Hartert and C. Hilgert). 



This species has a wide distribution in Africa ; the t3'pe was obtained at the 

 Cajje of Good Hope, and the British Museum (Natural History) possesses specimens 

 from Natal, Nyasaland, and the East Africa Protectorate. 



According to Dr. Villeneuve {in lift. March 23, 1914), Gonia incerta Big. (c?) 

 and G cilipt'da Itond. (?) are so.tes of G. biinaculata Wied. 



Gonia (Pseudogonia) cinerascens Rond. 



(Dipt. Jl.il. Pv.rh: vol iii. p. 34 (185',l)-) 



One S from 101 (iolea, Algerian Sahara, 1913 (Dr. E. J. 0. Hartert and 

 C. Hilgert). 



Genus CONOGASTER Br. and vou Berg. 



Conogaster petiolata Villen. 



(Denksilir. Math.-Natarw. Kl. K. Akad. Wiss. Ixxi. Bd. p. 144 (1910).) 



Two ? ? from In Salah, Tidikelt, Central Algerian Sahara, 24-30. iv. 1912 

 (Dr. E. J. 0. Hartert and C. Hilgert). 



The type of this species was collected in Sokotra by Prof. Oskar Simony. 



GEN. NOV. 

 Sp. nov. 



Southern Algeria : one ? from Hassi el Hadjar, south-west of Ouargia, 

 15. iii. 1912 (Dr. E. J. 0. Hartert and C. Hilgert). 



With reference to this specimen, Dr. Villeneuve, who kindly examined it, writes 

 (in litt. March 23, 1914): "I possess a similar example from the Transcaspian 

 district. It is difficult, without seeing the other sex, to assign this new genus and 

 species to its exact position, but it perhaps belongs to the group 2'linjptocera, Br. 

 and V. Berg. The following are the characters to be noted : 



"(1) Nervi alarum ut in g. Stomatomijia dirccti ; seta valida, louga, erecta ; 

 uervo 3° usque ad parvum uervum transversnm ciliato. 



* For the identification of this species and of almcst all the other previously described species of 

 Tachiuidae mentioned below, as well as for most valuable detailed information concerning the new genera 

 and species characterised i»r referred to in the following pages, the author is indebted to Dr. J. Villeneuve 

 the well-known authority on Tachinidae, to whom grateful acknowledgment is due for his extreme 

 courtesy. 



