376 INSKCTA. 



to that of tlio preceding suhgpims, hut the sotn is soniPtimos plu- 

 mous*. 



The sixth division, that of the Lkptopodites, is remarkalile for the 

 length and tenuity of the h^gs, the two last being at least twice the 

 length of the body, which is also slender and filiform ; the two first are 

 distant from the others ; all the tarsi are short. The head is spherical 

 or ellipsoidal, and terminates in a point ; its length equals or surpasses 

 its transverse diameter. The termination of the abdomen is pointed 

 in the females, and clavate in the males. The antennae are very 

 small, and are inserted on the front. These Museides are found on 

 plants, and several frequent aquatic localities. In the 



MiCROPEZA, Meig., 

 Which I formerly distinguished by the name of Calohates:, the head 

 is ellipsoidal and terminates in a point; the last joint of the antennae 

 semi-orbicular, and the seta simple. Tlie space which separates the 

 anterior legs from the others is more apparent here tlian in the fol- 

 lowing subgenus. 



M filiformis; Calohala fill for mis. Fab. ; Schell., Dipt., VI, 1. 

 Blackish; abdominal annuli margined above with whitish ; legs 

 fulvous, with a black ring round the posterior thighs. In the 

 woods about Paris. To this species M. Meigen refers the Musca 

 corrigiolata of Linnaeus, which is also a Fabrician Calobata\. 

 In 



Calobata, Meig., Fab., 

 Or my Micropeza, the head is spheroidal, and the last joint of the 

 antennae, more elongated than in the preceding subgenus, is almost 

 triangular and rounded at the end; the seta is frequently plumous J. 

 Our seventh division of the Museides, that of the Carpomvz.*;, so 

 called because the larvae of several si:)ecies feed on fruits and seeds, 

 in the germ in which the mother had deposited her eggs, is charac- 

 terized as follows : wings tiirned up or distant when at rest, and sus- 

 sceptible in that state of a reiterated vibratilc motion, or of being al- 

 ternately raised and depressed, and spotted or dotted with black or 

 yellowish ; a port generally analogous to that of the common Fly ; but 

 the eyes are always distant, and the halteres exposed ; the abdomen 

 exhibits from four to five rings exteriorly, and frequently terminates, 

 in the females, in a hard, cylindrical, or conical point, which a.cts as 



* Lat., Gener. Crust. Insect, IV, 349. This subgenus should be re-examined. 

 Some of the species may be referred to Sepedon. — S. rufa, rufipcs, Fab. — and others 

 will form separate subgenera. Some of them are connected with Oscinis and 

 Dryomyza. 



t Lat., Ibid., 352; Meig. Dipt. According to the figure given by M. Wie- 

 demann, of a species of Nerius (fuscus, Anal. Entom., l), Fab., these Insects must 

 have a general resemblance to the Micropczai, but are removed from them by their 

 antennae, almost as long as the head, of which the second joint is at least as long as 

 the third ; the latter is almost orbicular, a little longer than it is v.ide. It is evident 

 then, that this genus is connected with Tetanocera, just as the Calobatae of Meigen 

 lead to Sepsis, which I bad united to the preceding ones under the common name of 

 Micropeza. Here the wings are vibratile, which leads us to the Cqihalia, Orlalis 

 and Trijpeta of Meigen, that present the same characters. 



J See Meigen. 



