NOTES. 239 



J^dimus, however, diflfcrs as follo-ws: 



1) the face and cheeks arc much more projecting, the antennae are 

 comparatively longer (compare the head of Eclinuis as figured 

 by Loew, Stett. Ent. Z. 1844; Tab. II, fig. 9, 10, with the Ei)i- 

 hatcii by Burgess in Proc Boston Soc. N. H. 1878; Tab. IX, f. la); 



2) the wings have no perceptible denticulations along the costa; 



3) each abdominal segment is strongly coarctate at the base, the 

 preceding segment having a correi])onding swelling along the 

 incisure; this is especially perceptible in EcUmus persincilluris 

 and fjracilis; less so in E. hhius; 



4) the thorax in the male is not muricate. 



I had an opportunity of comparing Epihata^ muricatus with the 

 three species of EcUmus in Mr. v. Boeder's collection (in Hoyni); 

 probably the richest private collection of Diptera in Europe. 



TJuvenemyin Bigot has the shining thorax and the projecting face 

 ai Eclimus, and, at the same time, the muricate thoracic surface of 

 Epibatcs (the latter is not mentioned in the description); it has a 

 longer proboscis thaii either. These genera may, for the present, remain 

 undisturbed, until a larger number of forms, belonging here, are discovered. 



167. Epitates niger. The well-preserved male specimen in th« 

 Brit. Mus. shovvs the minute spines on the thoracic dorsum distinctly. 

 I mention this to correct my statement in the Western Dipt., p. 274. 



168. The latinized from Thereva, adopted universally, seems pre- 

 ferable to Thcreua recommended by Mr. Loew. It is easier to pronounce 

 like Evmifjd for Euaitfid, Evandcr for Eunnder etc. About the euro- 

 pean species, compare Loew, Dipterol. Beitrage, II, 1847. 



169. Thereva candidata. In Mr. Loew's diagnosis, read dausa 

 for ajurta. 



170. There is au earlier Thereva nervosa Loew, 1847 (Loew in litf.). 



171. About the european Scenopinus, compare Dr. Loew's article 

 in the Verb. Zool. Bot. Ver. 18-57 ; corrections and additions by the 

 same, in Beschr. Europ. Dipt. Ill, p. 150—152. An earlier article by 

 him, about the same genus, in the Stett. Ent Z. 1845, p. 312—315. 



172. About the CyiUdae there is a monograph by Erichson, in 

 his Eydomographieen (1840;: Die Henopier. 



Compare also Loew's: Fdhofjaster, eine neue Gattung dcr Acrocerklcn 

 (Wien Ent. Mon. I, p. 33; 18.57). 



AVestwood's: Descr. of some new exotic species of Acroccridac (ia 

 the Trans. Ent. Soc. V, p. 91—98; 1848). Another paper by the same 

 in the same Transactions for 1876. 



The name Cyrtdne, derived from the genus Cyrtus {xvQTog, hump- 

 backed), I find was used by Newman, in his Grammar of Ent., 1841. 

 Cyrtidae was adopted by Loew, in the Monogr Vol. I, instead of 

 Acroceridae (Leach), Ihiiopidac (Erichs), Iiijlatae (Meig.), Vcsicidosac 

 (Macq.). It certainly has more meaning than Acroceridae, derived from 

 a character, the insertion of the antennae on the vertex, which is by 

 no means universal in the family. Henojjidae (Thiiopsi, one-eyed) Mas 

 adopted by Erichson, in spite of the circumstance that the generic 



