200 C. R. Osten Sacken: Diptera 



II. Antennal arista apical or subapical 



A. First antennal Joint many times longer than the two others 



taken together Longina WiedO- 



AA. First antennal Joint not longer than the two others, taken 

 together. 

 Third antennal Joint truncate at the tip, with the arista 



on the truncature .... Nerius Fab. 

 Third antennal Joint pointed, with the arista on the point; 

 scutellum with four bristles . Telostylus Bigot. 



Of the ten species, contained in the coUection from the Philippine 

 Islands, five may be referred to Calobata in the wider sense; two to 

 Nerius, one to Telostylus; for two species I form the new genus 

 Euryhata. Of the five Calobatae, four belong to the group Taeni- 

 aptera Macq. ; the fifth must be referred to a difi"erent group, for which 

 however I am not prepared yet to introduce a new genus, For this 

 reason I left all the five species in the old genus Calobata. 



In the analytical table that foUows, the species mentioned in my 

 Enumeration etc. are also included, because several new characters are 

 for the first time introduced here. 



The terms anterior and posterior basal crossvein refer to 

 the crossveins closing the second basal and the anal cells; compare 

 Loew, Monogr. N. Am. Dipt. I, p. XXIV, fig. I, litt, p, q, 



Calobata. 



I. The distance of the posterior crossvein and of the end of the second 



vein from the apex of the wing is nearly the same (or, if the 



former is greater it is less than twice as great as the other). ^) 



No postvertical bristles; anterior basal crossvein a little 



beyond the posterior one. 



A golden, sericeous stripe runs from the mesopleura to 

 the middle coxae. 



Antennae black .... chrysopleiira n. sp. 

 Antennae red galhula n. sp. 



') Macrotoma Laporte (Ann. Sc. Nat. 1^'« Serie XXV, 1832, 

 p. 457, Tab. X, A.), from Cochinchina, is the same, or very nearly 

 the same genus as Longina Wied., from Brazil. The descriptions and 

 figures alone do not afford sufficient data for a close comparison. 



The species of this group are Taeniapterae ; the other cha- 

 racters, belonging to them have been mentioned above, on p. 198. 



