REVISION OF STREPSIPTERA PIERCE. 141 



i. PARAXENOS ERBERI Saunders (1872). 



Host. — Bembecinus peregrinus Smith; Coreyra, May (pi. 10, fig. 1). 

 According to Saunders this species may be described as follows: 

 Male. — Elongate, black, legs fuscous, antennal rami subequal in 

 length. Length | line. a 



4. OPHTHALMOCHLINI, new tribe. 



Type genus. — Ophthalmochlus Pierce (1908). 



Parasitic on Sphecidae. 



The tribe includes three genera: 



17. Sceliphronechihrus Pierce, parasitic on Sceliphron; America. 



18. Ophthalmochlus Pierce (1908), parasitic on Priononyx; 

 America. 



19. Eupathocera Pierce (1908), parasitic on Sphex; America, 

 Europe. 



When better studied this tribe may be found to belong to the 

 Homilopinse, it being only for that reason that it is separated at all. 



17. SCELIPHRONECHTHRUS, new genus. 



Name derived horn Sceliphron (the host genus) +kxdpbi (enemy ) = 

 parasite of Sceliphron. 



Type of genus. — Sceliphronechihrus fasciati Pierce. 



The genus is parasitic on the genus Sceliphron (Pelopseus) and at 

 present is only from the West Indies. 



lariter reflexo, reliquo compresso, distorto, basi tumido, apice subtiliore, obtuso: 

 quarto e basi praecedentis retrorsum emergente, in ilium inflexo spatio libero inter- 

 medio basi relicto, similiter compresso, basi dilatato, apice subobtuso, longitudine 

 praecedenteni plus minusve excedente. Ala? costse dimidio basali cum neura media- 

 stinal (=subcosta) proximo sed distincto; postcostali (=radius) remota subabbreviata; 

 area costali lata nebulosa, ultra neuras producta; neura externo-media (=medius 2) 

 sinuata, dimidio apicali duplicata, tenuissima: area intermedia superior (above medius 

 2) neuris insulatis binis duplicatis (=radius 2 and medius 1), de margine externo retro 

 productis; quarum diseoidales paulum longiores, a neura externo-media (=medius2) 

 longe abstantes: area intermedia inferior neuris rectis tenuibus; prima (subexterno- 

 media) (=cubitus) gracili; aliis e basi radiantibus, subapproximatis, tribus ( = anal. 

 veins), basi paulum inspissatis, deinde quasi duplicatis, quarum ultima analis. Pedes 

 antice trochanteribus femoris tibiisque longitudine fere sequalibus; tarsorum articulis 

 4, fere similibus, basali robustiore, apicali tenuiore; intermedii fere consimiles; postici 

 coxis reniformibus, trochanteribus subovatis, robustis; tibiis tenuioribus. 



Puparium, operculo oculorum situ fenestrulis paucis minutissimis instructo (Saun- 

 ders, 1872, pp. 45, 46). 



a Elongatus, ater, pedibus fuscis, antennarum ramis longitudine fere cosequalibus. 

 Long. corp. f lin. In Mus. nostro (British Museum). (Saunders, 1872.) 



