2 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.64. 



OpJieltoideus Ashmead. To these Morley ' has added his two Orien- 

 tal genera, Tetragonalys and Parca, and Enderlein* his Sauterellus 

 and Apatagium, based on Oriental species, and ProstJiodocis, based 

 on the Ethiopian Paniscus antefurcalis Szepligeti and a South Amer- 

 ican species. 



As thus constituted the tribe consists of at least five discordant 

 elements. 



Parca, as I have already pointed out,^ is Mesostenine and synony- 

 mous with Earrana Cameron. 



Cidaphus and Tetragonalys are synonymous and belong rather to 

 the Mesochorini. Here Cidaphus replaces PleslopTiihalmus Foerster, 

 which in the opinion of most of the recent authors is synonymous 

 with it. Szepligeti^ separates the two on venational and claw char- 

 acters and places them with the entirely unrelated Nesomesochorus 

 Ashmead in the new subfamily Neomesochorinae (sic!). Szepligeti's 

 determination of Mesochorus alarms Gravenhorst, the commonly 

 accepted type of both Cidaphus and Plesiophthalmus , is apparently 

 a quite different insect from that of practically all other writers, for 

 he characterizes it as having the areolet nearly triangular, the sub- 

 discoideus inserted somewhat above the middle of the postnervulus, 

 and the claws simple. For the purpose of the present paper it 

 seems best to follow the majority of the European writers and con- 

 sider the two genera as synonyms. Because of the page precedence 

 of Cidaphus in addition to the preoccupation by Motschulsky in 

 1857 of Plesiopltthalmus it is necessary to use Cidaphus as the ge- 

 neric name. Viereck^ has proposed the genus Plesiophthalmidea for 

 Plesiophthalmus paniscoides Ashmead. His reason for so doing is 

 not clear, for this species does not disagree in any particular with 

 the original description of Plesiophthalmus, and is certainly congen- 

 eric with alarius Gravenhorst as commonly interpreted by European 

 authorities. 



The type of the undescribed Opheltoideus johnsoni Ashmead, geno- 

 type of Opheltoideus, is apparently lost. As pointed out by Bradley* 

 certain species of Parabates will run to this genus because of their 

 lack of ttie areolet, and the best disposition to make of the genus 

 appears to be, as Bradley has done, to synonymize it with Para- 

 hates. Enderlein^ places three South American species in the genus 

 and redescribes it on the basis of these species. Since Bradley has 

 already synonymized it with Parahates and since Enderlein's species 

 are certainly not Parahates the Opheltoideus of Enderlein needs a 



3 Fauna Brit. Ind., Hym., vol. 3, pt. 1, 1913, p. 346. 



* Stett. Ent. Zeit., 1912, pp. 125-144. 



» Philippine Joiirn. Sci., vol. 20, 1922, p. 564, flg. 6. 

 « Gen. Ins., fasc. 114, 1911, p. 70. 

 »Bull. 83, U. S. Nat. Mus., 1914, p. 119. 



• Ann. Mag. Nat. Hist., ser. 9, vol. 3, 1911, pp. 319-324. 

 •Stett. Ent. Zeit., 1912, pp. 125-144. 



