020 INSECTA. 



Ill many, tlio wing's are ahvoys cxtendeil, nml tlic p:i]]ii Imiic; ^vitli the Inst joint very Ion;:; nni.] annular. 



CU'iioj'/iora, ^U'i'^^, )ias fililorm anteiin;e, peetiuated in tin; iiiiiles, ami hiei'rated in tin- iV'Uiales. Ti/nda pectlnl- 

 coniis, Fabr. 



}'':i/ii:/a, luis tlieiii nearly setaceous, simple, with the two hasal ji.iint.s tliicker, aud the se\'eii trrininal ones 

 slender and suhcylindric. 



Tipid'i, Latr., lias also the antenna; nearly setaceous and siinijle ; but all the joints, cxce|»t the second, are nearly 

 cylindric -, the first is largest, the third elongate. T. oleracea, the Common Crane ['ly, or Daddy Lon;;- Legs, very 

 nunniiin in pastures; the larva feeds on the roots of dying plants, [and many other species]. 



Nephrotomti, Meig., has I'J-Juinted anteuna^ \u the males, and fifteen joints in the females, the third and following 

 being arched. 



Ptiichoptern, :\li'ig., has simple sub-setaceous antenna-, lil-jointed ; the third much longer than the others, and 

 the following uhlung. 



In tlie follow iii;,^ tlie tcrminn! juintof tlie palpi is scarcely longer than the others, and presents no appear- 

 ance of ami lib ; and the \\i;i^s are often incumbent on each other. .Some of tliur^e have more than 10-jointL-d 

 antenn;e. 



Rh>2)iii/a, j\[eig., has the male anteim;e ]iei'tniated. 



Eriti/jterc, iMi.'ig., has, like tin; iireccdoig, many nerves, l)nt they are pilose. 



Lasiopfera, Meig., has the wings villose, but only with two nervures. 



Limnohia, Meig., has the wings glabrous, and the antenna- simple in both sexes. 



Polymeray Weid., has 28-joinled antennae. 



Trlchocera, &Ieig., has the basal joints of the antenn:e o\'al, and the terminal ones ^■ery slender, long, and pu- 

 bescent. T. Memnli-f, the Winter Midge. 



Macropeza, Meig., has the hind feet exceedingly long ; the basal parts of the antennre are baiiy. 



D'txa, Meig., appears allied toTrichocera, but the basal joint of theantennie is very short, second nearly globular, 

 and the following more slender. 



Megistocera, Weid., has only U)-jointed antenna;. 



Ilexatomay I.atr., has 6-jointed antennae, and consists of the Anisomera and Ncmatoceruc of Meigcn, the first of 

 which has the third joint of the antenna; much longer than the second. 



ChioneGy Dalm., differs from all the rest in wanting wings ; the abdomen of the females is terminated by a bivalve 

 o\ipo-.itor ; the eyes are rounded, and the ocelli obsolete. The only species [knowm to Latreille] is found in winter 

 on ttie snow. C, araneoides, Dalm. 



The Tipnle aiome of De Geer forms amjthcr apterous subgenus, but the antenna.' lia\'(_' at least fifteen joints. It, 

 as well as the preceding, is very small. 



Another divi>i'Hi, the Tijiiiles finifiirorcs, is distinguished hy possessing; two or three ocelli; the 

 antennas, much longer tiiaii llu- lu.'ad. slender, 15- or HJ-jointed ; the eyes entire, or notchcil ; the last 

 joint of the palpi mM articulated ; the wings horizontal, with much fe\ver nervures than iu tiie preceding; 

 the legs long and slender, witli the tips of the tibue spinose ; some have the luilpi curved, ami composed 

 of four joints. 



li/n/ji/nii-, Lai v., has the eyes etdirely occupying the head ; the ocelli of equal size, and the muzzle advanced, and 

 not lunger than the head. 



AnhiduluM, has the eyes occupying only the sides of the head, and the muzzle prolonged beneath the breast. 



Gnorlnte, Meig., differs from the last only in having the palju apparently inserted near the tip of the proboscis. 



In the following, the head is not produced into a muzzle. 



Jiolftophita, has long antennae, and the eyes arranged in a transvei'sc line. Gucriu has published a complete 

 memoir on a species of this genus. 



JJacrocero, Meig., has the male anteniue very long, and the ocelli arranged in a triangle. 



In tlie rest, the antenna^ are never longer than the head and tliorax. 



MycetiipliUa, Midg., has spined hind tibiae, and only two ocelli. 



Lcia, Meig,, ditfers from Mycetophila in having three ocelli; the front one being very small. 



Sciophila, Meig., has the joints of the antenna; more distinct; and a small cubital cell. 



Anjongsfc the subgenera with simple tibia-, and three ocelli close together, some have IG-jointed antenute, and 



the (.-yf;-; entire, 



I'lahiiira, Mi'ig., approaches Sciophila, but the first cuhil;d cell is much larger ; the abdomen of the females is 

 broader beliiiid. 



SjiiKijilia, Mei'j;., lias only a single cubitnl cell, closed by the liind margin of the wing ; the middle discoidal ci;Il 

 is furcate in the middle, forming a closed oval cell. 



( )lhers have the eyes notched in the inside. 



Mi/re/uO'ut, Mi-ig,, has lo-jointed antenna, and the wings have a large closed cell, exiending froni the base to the 

 mid/lle. 



Mo/'jOrus, Lidr. (S, iar.i, Meig.), has simihir antenna\ and 1lie middle of the wing exhil.iits a cell, extending from 

 the base to the hind margin, and closed only by this maruin. 



t'tnnpi/lomi/za, "Wied., has only 14-jointed antenna;, at lea:5t in the females ; the inner portion of the wings has 

 no nervures; and tiie e>es are entire. 



