378 On new Hy nienoptera from Central America. 



more broadly black at the base, and with a broad black band 

 towards the apex, S. connectens having only the base black ; 

 the legs, too, are more strongly haired. 



Sjyhcerojyhlhalma chiron, sp. n. 

 Long. 18-20 millim. 



Ilab. Mexico, Venta de Zopilote (77. //. Smith), Acapulco 

 in Guerrero {fl'dge). 



This species has the general coloration of S. ariadne, Blake, 

 but it is mucii larger. From S. Cressoni, Blake, it may be 

 known by the central black mark on the base of the abdomen 

 being completely separated from the smaller lateral black 

 marks. In general coloration it agrees, too, with S. ravula. 

 Cam., but the head in that species is quite differently formed. 



Head distinctly narrower than the thorax, covered with 

 pale golden pubescence, except on the oral region ; the 

 mandibles black. Antennae black ; the flagellum covered 

 with a pale ])ile. Thorax narrowed abruptly behind and 

 rounded in front ; black, a broad band of pale golden in the 

 middle above ; the mesopleurge covered with short silvery 

 pubescence. The petiole covered with pale hairs. The 

 second abdominal segment fulvous in the centre ; extending 

 from the base to near the middle is a black mark, longer than 

 broad, gradually and slightly dilated to the apex, which is 

 rounded ; the sides of the segment black to the apex, and in 

 their centre is a large black mark, rounded at the base, the 

 apex more oblique ; the third and fourth dorsal segments 

 black, the black being at the base slightly oblique from the 

 centre ; the penultimate segment black at the sides ; the pygi- 

 dium black. The third to the fifth ventral segments densely 

 covered with pale silvery hair ; the last segments black. 

 Legs densely covered with silvery hair. 



SphcBrophtTialma myrmiciformis, sp. n. 



Pallide aureo-pilosa, antennis pedibusque nigria. $ . 

 Long, fere 12 millim. 



Hah. Panama, Bugaba (Champion). 



This species bears a great resemblance to the not uncommon 

 Central-American ant Camponotus sericeiventris, amongst 

 specimens of wljich it was placed in the box when received 

 by me; but I know not if they are found together in nature. 



The entire body covered with a silky depressed pale golden 

 pubescence, shining; the head rather closely covered with 



