LIST OF DIPTERA. 



4. Ptilocera LATERALIS. 



Nigra; antenna basi testacem ; thorax alio bivittatus ; abdominis 

 latera testacea ; ala ad costam et apud venas nigricantes. 



Ptilocera lateralis, Macq. Dipt. Exot. Suppl. i. 48, 1. 

 Hab. ? 



Genus 2. EXOCHOSTOMA. 



Caput fere sphaericum. Palpi filiformes, triarticulati. Labrum 

 breve, excavatum. Ocelli in triangulum dispositi. Oculi convexi 

 rotnndati, nudi. Antennae 10-articulatae, flagello subuliformi ; arti- 

 culus lus elongatus; 2us cyathiformis ; 3us, 4us, 5us, et 6us breves, 

 cylindnci; 7us longior, apice attenuatus; 8us, 9us, et lOus breves, 

 graciles. Scutellum tuberculis duobus approximatis. Abdomen 

 segmentis sex. Pedes graciles, fere nudi. 



Exochostoma, Macq. Ann. Soc. Ent. Fr. xi. 42. 



Cubital vein simple, ending on the fore border, far before the 

 tip of the wing. Four incomplete externo-medial veins. Subanal 

 vem joining the anal at some distance from the border. Median 

 veinlet distinct. 



1. Exochostoma nitida. 

 Nigra, nitida ; tibiceflavm ; aim nigricantes. 

 Exochostoma nitida, Macq. Ann. Soc. Ent. Fr. xi. 43, pi. 4 ? Pt. 2 

 Provence. 



Genus 3. DIPHYSA. 



Palpi brevissimi. Antennae 10-articulatae, capite longiores • 

 flagellum subhneare, non stylatum. Scutellum quadrispinosum. 

 Xylophagus, p., Wied. 

 Diphysa, Macq. Dipt. Exot. i. 1, 172. 

 Beris, p., Loew. 



