128 PROCEEDINGS OF THE NATIONAL MUSEUM voi.xxin. 



4. Scape not loiig, scarcely more than twice as long as thick; legs normal. 



(982) Cremnopi^ Fiirster. 



Scape long, stout, fully three times as long as thick; legs, especially the hind 



pair, robust (983) Megagnlhis Kriechl)aumer. 



5. Frontal excavation not large, without a sharp edge on each side; no knobs Ij 



between the antennje. j 



Maxillary palpi in female abnormal, the three penultimate joints short, 



compressed, lenticular; claws cleft (984) Troticus Serville. 



Maxillary palpi normal ; claws simple (985) Agathis Latreille. 



Tribe II. MICRODINI. Ij 



1862. Eumurodoida:, Family 12, Fortster, Verb. d. naturh. Ver. pr. Rhein!., , 



XIX, pp. 228 and 246. 

 1900. Microdhii, Tribe II, Ashme.vd, Smith's Insects of New Jersey, p. 592. I 



Thi.s tri])C diti'ers from the preceding in having a normally shaped ji 

 head, and ]\y the much shorter malar space, which is sometimes wholly j 

 wanting; otherwise the groups are identical. |h 



Fifteen genera have been recognized, distinguishal)le as follows: ! 



TABLE OF GENERA. 



First cubital and first discoidal cells separated, never cduflnent, the first abscissa of 



the cubitus distinct 11 1 1 



First cubital and first discoidal cells confluent, the first abscissa of the cubitus more \^ 

 or less completely obliterated. I 



Maxillary palpi 5 or 6 jointed ." 2 



Maxillary palpi 4-jointed. 



Areolet triangular; parapsidal furrows meeting at tlu' middle of the meso- 

 notuni ( 986) Cenostomus Forster. ^ 



2. Labium very long and slender; maxillary jjaljii 6-jointed 3 ' 



Labium not very long 4 



3. Labium extending to the middle of the mesonotum; mandibles falcate, «///( a 



small tooth within. . .(987) Agathirsia Westwood^ Par agathis Ashmead. 



Labium not so long; mandibles falcate, edentate, acute at tips, mthout a tooth 



within (988) Agathona Westwood. 



4. Maxillary palpi normal, 5-jointed, not much lengthened 5 



Maxillary palpi abnormally lengthened, extending to the base of the abdomen. 



(989) AcnigmoMo7n as Ashmead, new genus. 

 (Type, M'urodus hmgipalpus Cresson.) 



5. Forms slender, elongate, the ovipositor always long 8 



Forms rather stout, robust, the ovipositor very short or only slightly exserted. 6 



6. Hind wings without a closed discoidal cell; inner spur of hind tibiae about one- 



third the length of the ba.sal joint of tarsi; second joint of maxillary 

 palpi dilated or thickened; areolet triangular, subtrapezoidal or petio- 



late 7 



Hind wings hv7/(, a closed discoidal cell; inner spur of hind tibiae longer than 

 half the length of the basal joint of tarsi; palpi normal; areolet triangu- 

 lar, usually petiolate (990) Craasoniicrodus Ashmead, new genus. 



(Type, MIrrodiis ftilrfsrcns Cresson.) 



7. Eyes normal, not nearly extending to the base of the mandibles, the malar space 



distinct, broad. 



