ASHMEAD : CLASSIKICATION OF THE CHALC'IU FLIES 279 



12. Stigmal vein ending in a small knob ; palpi tiornial Lamprotatus Westwood. 



Stigmal vein ending in a large Ivuol). 



Palpi abnormal Gitognathus Thomson. 



Palpi normal Stictomischus Thomson. 



13. Stigmal vein ending in a small knob ; palpi normal Seladerma Walker. 



14. Stigmal vein ending in a large knob Miscogaster Walker. 



Subfamily IV. Lelapin.e. 

 1899. Le'lapiiife, Subfamily IV., Aslimead, Proc. Ent. Soc. Wasliingtoii, JV., p. 247. 

 1901. Lelapina^ Subfamily IV., Aslimead, Faun. Hawaiiensis, I., p. 311. 



This group reaches its greatest development in South America, where the species 

 of Lelaps are numerous, although as yet only a few have been descriljed. 



The group is, I think, correctly placed in the family Mucogaderidx. It shows 

 some affinities with the Cleonymida', and with the PteromaJkhv, through the subfam- 

 ily Diparinx. The two spurred hind tibite, however, se[)arate it from the latter, 

 while other characters separate it from the Cleonyniulie. 



The metathorax at apex is most frequently contracted into a neck, the usually 

 conically produced abdomen being attached to this neck by a short petiole. The 

 mesonotal furrows are complete ; the axilla; are usually approximate, although 

 separated at base of the scutellum, while the head, especially in the genus Lelaps, 

 resembles somewhat that found among the CkumjmUJ-.f, the eyes being large and 

 the occiput flat. 



My recently characterized genus J///r/v;/(/((^>.s is from North American, and super- 

 ficially resembles rhilnchi/ra Haliday, a genus in the Eari/toiuidu'. 



table of gekera. 



1. Females - 



Males '5 



2. Autennse 14-jointed with 2 ring-joints '^ 



Antenna 12- or 13-jointed '' 



3. Winged ■* 



Apterous. 



Abdonu'n conically pointed, the petiole distinct, a little longer than thick, the second segment 

 occupying hardly half its surface ; llagellum rather stout, subclavate, the joints fluted. 



Apterolelaps Aslimead (type A. nigricejin Ashni.). 



4. Abdomen conically produced at apex, and usually ending in a prominent ovipositor; second segment 



large, occupying fully half the surface, the third to fifth very short, the sixth and seventh together 

 conical, longer than half the length of the second. Lelaps Haliday (type Merostenus sodales Walk.). 



5. Abdomen conically produced at apex, the second segment not much longer than the third and fourth 



united, the fifth longer than the fourth, the seventh conically ].roduced ; scutellum with a cross-furrow 

 at its apical third Neolelaps Aslnnead (type .Y. hauaiicnaix Ashm.). 



