I 



44 PROCEEDINGS OF THE NATIONAL MUSEUM. vor..xxiii. 



times obliterated at the middle, the spiracles short-oval or rounded; , 

 tip of abdomen black, with one or more white spots above. 



(276) AgrotJirrcutt'H Yorsier^^SpilocrypUis Thomson (part). ; 



27. Metathorax not short; areolet large; tiji of abdomen black, usually with one or 

 two white spots above. 



(276) Agruiliert'utes Furster=Spilo(yr[f2>tttf< Thomson. 



2.S. ]\Ietathorax with only the tirst transverse carina present, the second represented 

 by sharp ridges at the upper hind angles, the spiracles small, 

 rounded; tirst joint of flagellum elongate; apex of abdomen with a 

 wiiite spot above (276) Agrothereutes Forster. i 



Tribe VII. MESOSTENINI. 



1900. McsDxtniini, Tfil)e W, Ashmead, Smith's Insects of New Jersey, p. 570. 



Thi.s tribe is propo.sed for several genera heretofore placed with the k 

 Cryptini and which are closely allied to them. On the other hand, 

 they present a general hahitus peculiarly their own, dithciilt to express 

 in words, but easil}^ recognized l)y the experienced eye, and which 

 seems to me to justify their separation as a distinct minor group. 



For the present, however, the only character I can giA'e to separate 

 them is the one used in my table of tril)es, namely, the small cpiadrate : 

 areolet, which is sometimes nearly punctiform and often open behind, 

 but which is never pentagonal in position, or large quadrate, as in the 

 Crypt'ini. The legs, too, relatively speaking, are, as a rule, longer 

 and slenderer, and increase more rapidly in length, antero-posteriorly, 

 than in the others. 



Ten genera have been recognized in the group, scparalile as fol- 

 lows: 



TABLE OP' (iENERA. 



Head with one or two spines or carina' between the antennae 7 



Head w'dlwut a spine or carina between the antennse. 



Claws large; last joint of hind tarsi about the length of the third; basal joint of 

 front tarsi much shorter than the tibite; ovipositor shorter than the 



body 2 



Claws small; last joint of hind tarsi much shorter than the third; T)asal joint of 

 front tarsi as long, or nearly, as the tibi;e; ovipositor usually longer 

 than the body, or at least never shorter than the abdomen. 



(277) Xe^natopodina Gravenhorst. 



2. Thorax vol, or only a little, more tlian twice as long as wide 6 



Thorax three or more times longer than wide. 



Mesonotum uv7/(0ui parapsidal furrows, or at most only feel)ly or vaguely 



defined anteriorly. 

 Mesonotuni ?r?V/i the parapsidal furrows distinct for at least two-thirds its 



length ; first joint of flagellum longer than the second 3 



3. TVIetathorax with the upper hind angles tuberculate, dentate, or spined, the 



basal transverse carina alone present, distinct, the apical wanting or 



incom})lete 4 



Metathorax with the upper hind angles rounded, unarmed; both transverse 

 carinas usually present, entire, although the apical transverse carina 

 is sometimes obliterated medially, but always distinct or highly elevated 

 laterally (278) ^f^^.'«lstt'llll.^^ < Jravenhorst =Stenanvwi Thomson. 



A 



