(24) 

 NEW SYXTOJIIDAE IN THE TRING MUSEUM. 



By tub Hon. WALTER ROTHSCHILD, Ph.D. 



1. Pseudosphex klagesi .sp. nov. 



(?. Head black; tegnlae orange-yellow; thorax brown; patagia with wide 

 orano-e-vcllow bands, mctathorax with transverse )-ellow band ; antennae black ; 

 first three segments of abdomen rnfous, rest black ; coxae and tiliiae of forelegs 



white ; ventral valve white tinged with rufons ; legs pale rufous. Forewing 



iiyaline on inner half, costal half deep brown, inner area between margin and 

 vein 1 brown for its basal half; hind wing hyaline. 



Length of forewing: 130 mm. 



Ilal). Corosita, Caara River, Venezuela, June l'.iU4 (S. M. Klages), 1 S. 



'2. Pseudosphex garleppi sp. nov. 



c?. Fore coxae white, fore tibiae black, tarsi pale yellow ; hind and middle 

 coxae black, tibiae and tarsi yellow ; ventral valve white ; head and thorax black, 

 collar yellow, patagia yellow with black centre, two lateral lines and a transverse 

 line on thorax yellow ; antennae rufons brown, yellow at apical fourth ; abdomen 



black. Forewing hyaline, margins and nervnres brown rnfous, apical portion 



clouded with brown from end of cell to termeu between costa and vein o. 



Length of forewing : lo mm. 



J£ab. Yangas de Coroico, Bolivia, 1800 metres (Garlepp), 1 t?. 



3. Pseudosphex exsul sj). nov. 



(?. Head, antennae, tliorax, and abdomen deeii black ; legs orange-brown ; 



ventral valve faintly ontlined with pale grey. Forewing hyaline, the basal 



two-thirds brownish orange, apical third more greyish, basal two-thirds of costa 

 and inner margin brown ; hindwing greyish hyaline. 



Length of forewing : 1~ mm. 



Jfab. ? 2 (J c? (probably from pins and setting, Rio de .Janeiro or 



Sta. Catherina). 



4. Pseudosphex steinbachi sp. nov. 



(J. Head golden yellow : antennae rufons ; leg.s orange-rufous ; thorax chestnut 

 with paler edges to patagia; first two segments of abdomen chestnut, third segment 



])ale chestnut with broad transverse black band, rest of abdomen black. 



Forewing orange-hyaline, costa and inner margin chestnut, ajiical area beyond cell 

 clouded with brown ; hindwing hyaline-yellow. 



Length of forewing : 17 mm. 



Jfab. Venezuela: La Vuelta, Canra River, May 1903, i d S ; Corosita, 

 Caura River, Jnne 19u4, 4 c?c? (S. M. Klages). Sta. Cruz de la Sierra, Bolivia, 

 1905—1906 (Jose Steinbach), 1 6. Type S, La Vuelta. 



5. Sphecosoma trinitatis sp. nov. 

 <S. Legs gamboge-yellow; pali)i pale Icmon-ycIIow ; antennae bright rufous; 

 head and thorax yellow, a transverse line on vertex and two narrow transverse lines 

 on tegnlae black ; a longitudinal line on the jiatagia and two on thorax black ; 



