264 OBSERVATIONS ON PIPUNCULIDvE. 



autumn, in woods, and on the grass beneath trees. Their 

 economy is unknown. The females have a curved and rather 

 long ovipositor, apparently adapted to pierce the substances 

 where they deposit their eggs. I have made a new genus of 

 Meigen's third division, which differs very much from the 

 first and second ; however, the form and clothing of some of 

 the latter species indicate an approach to it : e.g. P. campestris 

 and others are distinguished by their cylindrical abdomens, 

 which in P. modestus and P. ruralis are flat, and, in the 

 females of the latter, pilose. They are pilose and flat in both 

 sexes of P. audits and of Meigen's third division. 



Genus I. — Pipunculus, Latreille. 



Pipunculus. (A. et B.) Meigen. 



Corpus plerumque breve : maris oculi supra connecti : antennae 

 articulo 3°. apice curvo acuminato : metathorax mediocris : ab- 

 domen subarcuatum ; mari segmento 1°. brevi ; 2°. 3°. et 4°. 

 suboequalibus ; 5°. longiore ; 6°. parvo ; fern, segmentis 1°. ad 6 um . 

 subaequalibus : pulvilli magni : alse iridescentes ; nervus 3 lls . 

 undulatus ; nervus 4 US . perfectus, undulatus, angulum ad nervum 

 transversum ordinarium formans et nervi costalis apicem at- 

 tingens ; nervi 2 incompleti apice conjuncti ; nervulus transversus 

 ordinarius subarcuatus. 



Obs. — Maris hypostoma angustius ; antennas articulo 3°. breviore 

 et obtusiore ; tarsi angustiores ; ungues et pulvilli parviores ; alse 

 longiores et plerumque obscuriores. 1 



* Nervus 4 US longitudinalis simplex. 



-j- Abdomen cylindricum, basi paidlo angustius. 



J Alee immaculatce. 



Sp. 1. Pip. maculatus. Mas et Fern. JEneo-ater, abdomine 

 maculis rufis (Mas) aid fascia interrupta jlava, (Fern.) 

 pedibusjlavis, alis fuscis. 



JEneo-ater, nitens, pubescens : caput atrum, antice utrinque et subtus 

 argenteo micans : oculi ocellique run" : os flavum : antenna? fuscoe ; 

 articulus 3 US . argenteo micans ; 4 US . niger : thorax glaber ; antice 

 utrinque flavo tuberculatus : abdomen basi utrinque pilis albis 

 vestitum ; mari segmentis 2°. ad 4 um . apice utrinque runs ; 



i First observed by Mr. Haliday. 



