NO. 1206. ICHNE IJMON FLIES— A SHMEA D. 125 



1888. Siffalphid.r, Trilx' IX, Marshall, Species des Hyin. des Braeoiiides, I, p, 66. 

 1900. »S'/V/((/^j//(9^'(, Subfamily VIII, Ashmkab, .Smith's Insects of New Jersey, p. 

 591. 



This subfamil}-, and the followiiiii:, is remarkable for its alxloniinal 

 peculiarities, the segments heiiio- eoimate, sometimes without any traee 

 of sutures, or at most with tAvo or three (rarely four) indistinct sutures, 

 forming a carapace above, and deeply concave beneath. 



Tlie species belonging- in this sul)family differ from the next, or the 

 C/u/onmw, by having, at the most, only tvy/ cubital cells in the front 

 wings; otherwise they are indistinguishable. 



I^dr,steriaSzep\iget\, 1 ha^•e not seen, but seems to differ from Po/i/- 

 de<jin<)n Forster only in having no tooth on the hind coxa' and in hav- 

 ing the abdomen at apex entire. 



Eight genera fall into this group: 



table of (IENERA. 



Abdomen not segmented, composed of a single carapace 4 



Abdomen composed of 3 visible .segments 2 



Abdomen with 5 visible segments, tlie fourth and fifth ^>ot entirely concealed. 



Marginal cell closed; anal cell inlh a transverse nervure; antennse multiarticulate. 



(963) AUodorus Forster- 

 Marginal cell open at ajiex; anal cell irilliout a transverse nervure; antennae 



1 2-jointed ( 964 ) Epimgalplms Ashmead, new genns. 



(Type, Epi^lgalplius minutessimus Ashmead, manuscript.) 



2. Marginal cell closed. 



Mesonotun; >rith parapsidal furrows 3 



Mesonotum vithout parapsidal furrows, smooth, highly polished. 



(965) Lhmgalphvn Ashmead, new genus. 

 (Type, LI(»ii(/n/plniK politus Ashmead, manuscript.) 



3. Hind coxfc with a tooth above; second abdominal segment longer than the 



third, the transverse lines approaching the base laterally; hind margin 



of third segment notched (966) Pohjdegmon Forster. 



Hind coxaj without a tooth above. 



Second abdominal segment shorter than the third, the transverse lines not 

 approaching the base laterally; hind margin of third segment not 

 notched; scutellum normal; head as wide as the thorax. 



(967) Sigal/tlivs Latreelle. 

 Second abdominal segment longer than the third. 

 Scutellum normal; head as wide as the thorax. 



( 9<)S ) Forstcria Szepligeti. 

 Scutellum bidentate; lu'ad small, narrower than the thorax. 



(969) Fomicia Brull6. 



4. Transverse median nervure interstitial; first disci )idal cell sessile; apex of abdo- 



men with a deep median emargination, the ovipositor prominent; apex 



of male abdomen imarmed (970) Schizoprgiiimis Forster. 



Transverse median nervure not interstitial; first discoidal cell jietiolato; apex of 

 abdomen without or with only a slight emargination, the ovipositor 

 prominent; apex of male alxlomen usually armed with two spines or 

 teeth (971) Uroisigalphus Ashmead. 



