F()MWC)REH — MUTILUUJE. 107 



AntpniiH' niniple in both MSCt. 

 Eycii uvute, nioru or li«a acrtely eniitrKiiiMte in the ^..Mutilltt I^inn. 

 Kj'es HHiall, round, Hniouth and ptliHhed. 



Pnithorax 9 not HepHrated from rcnminder of thnnix : al>d(>nu>n with 



a very xhort petiole Nphwroplillialiua liliike. 



Prothorax 9-<l)>*ti'><'t'y !*(!paratcd from remainder of thorax; alnio- 



men witii an elongate iHitiole { % uuknouynj ...Chyphotes HIake* 



Aut«rior winjjs witli distinct, well <levelo|R'd stiKniu : Iwcy iinicolorouH, 



Hmootli and |>olit<hed, rarely with sparse lonjj hair, ir deeply piine- 



ture<l ( 9 nuknowu) PhotopNiN Hlake. 



3. — Three HubmarKinul cells, the second and third each receiving a recnrreiit 

 nervure; ajKJX of % aliilonien unarnie<l ; thorax of 9 divided by a 



transverse j?nM)ve; Innly rugose IVIyrtnoHM Latr. 



Two submarginal cells, each receiving a recurrent nervure; apex of "J, ab- 

 domen armed with a long recurved spine ; thorax of 9 triiiodostf ; 

 body smooth and shining MethoCM Latr. 



Pmmmoiherma is i('j)resente(l by a single species found in Florida, 

 Jill exceedintfly rare insect, the only s]H;cinien known being in the 

 Harris collection. 



Of MntUla, Sj)/i<irojtltth<ihna and Photojma (^ Agama \\ Blake), 

 there are numerous s])ecies ; the females of the latter genus are still 

 not known as such, and are j)robably iarviforni and subterranean in 

 their habit, while the males are abundant wherever they occur, 

 chietly in the far Western and Southwestern States. 



Chi/photea, which is readily recognized by the form of the thorax 

 and the elongate petiole of the abdomen, is represented by a single 

 sjKJcies from Arizona and Southern California ; the males are not 

 known. 



Myrmom contains only two species, the females of which are un- 

 known, and of Methoca four species have been described as inhabiting 

 our fauna ; of the latter genus, Mygin Say S and bicolor Say 9 , are 

 probably sexes of the same species ; the sexes are very dissimilar in 

 .shaj)e, size and color, the % having the apj)earance of a good sized 

 Ichneumon, while the 9 at fii*st sight resembles an ant. The 9 of 

 Mi/nnosa, which is also very different from the 7> , is said to have 

 much the same sha})e as that of Matilla, but is at once distinguished 

 by the presence of ocelli. In some specimens of Myrmosa tinicoloT 

 % the dividing nervure between the first and second submarginal 

 cells is abbreviated, the ])osterior coxa has a short flattened tubercle 

 or spine above, and the basal segment of the abdomen a tubercle or 

 hooked spine l>eneath near the base. 



* This genus is placed here provisionally, the % being unknown. 



