10 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 63. 



Townsend observed in 1911* that there are a great variety of 

 reproductive habits " in specimens which possess the external char- 

 acters ordinarily considered as defining the genus E xoristay Inas- 

 much as the reproductive habits are known in only about 15 per cent 

 of our species, it is naturally impossible to make much of an attempt 

 to correlate them with adult characters, and we think it impracti- 

 cable — for the present at least — to establish any sort of taxonomic 

 groups upon them. At the same time we find these characters in 

 the family of extreme scientific interest and often of great biologic 

 and economic importance; and we welcome all additions to a knowl- 

 edge of them. The following notes are from Pantel, Neilsen, Town- 

 send, and Baer. 



Libatrix and futilis deposit microtype eggs on foliage, which are intended to 



be eaten by the host. 

 Afflnis deposits eggs that are ready to hatch, upon the host. 

 Vulgaris deposits newly hatched larvae upon the host. 

 Cheloniae deposits thin-shelled, stalked eggs upon hairy caterpillars. 



LIST OF SPECIES INCLUDED IN BXORISTA BY COQUILLETT BUT NOT HERE INCLUDED IN 



ZENILLIA. 



aerata Coquillett, Revision, 1897, p. 100, is a synonym of Doryphorophaga 

 doryphorae, from the type. 



dorsalis Coquillett, Canad. Ent, vol. 30, 1898, p. 236, is also a Doryphoropliaga ; 

 Parkeriellus flavipalpis H. E. Smith, Proc. Ent. Soc. Wash., vol. IS, 1916, p. 96, 

 is either the female of this or of a very closely related species.^ 



duMa Fallen, of Europe and North America belongs to the genus Lypha Rob- 

 Ineau-Desvoldy, 1830, and is considered to be synonymous with silvatica, 

 the type. Aporomyia Rondani, 1859, has the same type. The genus is per- 

 fectly valid, distinguished by having a very large pteropleural bristle, which 

 seems to have escaped notice in publications. 



isae Coquillett, Revision, 1897, p. 96, belongs to Pseudeuantha, and is a 

 synonym of jolinsoni Townsend (Aldrich, Insecutor Ins. Menst., vol. 9, 1921, 

 p. 88). 



ordinaria Van der Wulp, as identified by Coquillett. The National IMuseum 

 now contains under Coquillett's label only three males from Allende, Mexico ; 

 they have no ocellars and should be referred to another genus. Coquillett 

 identified for the senior writer many years ago a female which has since 

 proved to be DoryphoropJiaga dorsalis. The true ordinaria of Van der 

 Wulp can hardly be identified without an examination of the type. 



parva Coquillett, Revision, 1897, p. 100, is a Nemorilla. 



peUolata Coquillett, Revision, 1897, p. 98, is a dwarfed male of Phorocera 

 claripennis Macquart. 



spinipennis Coquillett, Revision, 1897, p. 95, is a synonym of Exoristoides 

 slossonae Coquillett, Revision, 1897, p. 91. The large pteropleural bristle, 

 strangely overlooked by describers, is the important character in this genus. 



♦ Pi-oc. Ent. Soc. Wash., vol. 13, p. 165. 



^ The females of Boryiihorophaga as far as known all have a striking character whicli 

 makes them very easy to distinguish : on the middle coxae is . a dense tuft of recurved, 

 stubby bristles forming almost a solid mass bending back over the coxae. These spines 

 have remained unnoticed by describers ; they probably serve to hold the liost during 

 larviposition, as ventral abdominal spines do in many other species. 



