•li'ri nAVENTolJT A.rAI)EMY OF NATl'KAL SrIEXOES. 



ward, two of whirli iwv more pnoiiiiueiit ; fiiwu color; a narrow distinct dark 

 line extendiutf directly backward from between the eyes; a dark s|>ace be- 

 hind on either side, tlie lateral corner projections liuhter. 



Mandibles, leni-th. six mm.; project tive mm. beyond the eyes; height, 

 two mm.; elongated, very little enlarged at the base, which presents an oval 

 section; gradnally prolonged to form the upper finger of the jaw; tlie niov- 

 able linger is less than half the length of tlie mandible; the points and teeth 

 are rather blunt; armed with four rounded Idutit teeth as in figure. Immov- 

 able finger; armed Mith four primary teeth, - - and eight secondary teeth 

 arranged in two rows, tiie inner having three anil the outer five teeth (the 

 last inner one and the ia.st two outei- teeth being mere points) arrmged thus: 

 2L^T ■ ; covered with tine bristles; longer and more abundant above and 

 t<)ward the front on outside ; a brush of rather long |>iuuated bristles on the 

 inner side of the uppei' ringer; a similar brush of longei more curved, less 

 ninuerous feathered bii>tles on the inside of the movable ringer. Both fin- 

 o-ers otherwise glabrous, reddish, ueconiiug black at the points and teeth. 

 Mandibles obscure, .slightly reddish yellow ; bristles more reddish ; eye emi- 

 nence black, slightly elevated : eyes dark l)lue, round. Mandibles two joints, 

 rirst joint sub-cylindrical, gradually narrowing toward the point and forming 

 a regularly curved ringer, armed with blnnt teeth : second joint forming the 

 movable ringer, inserted a little more than half way from the base of rirst 

 joint, and just reaching the end of the upi)er ringer, and when closed cro.sses 

 the upper finger internally; lower ringer narrow, regularly curved vertically, 

 ])ut laterallv rii-st curved out, then in, then out, and then in again. 



Maxills: rirst joint immovable, elongated, triangular; separated from 

 each other by a sindieu grooved sternum which extends behind and around 

 the bases of the labial palpi, where it f<»nu> a triangular piece (labia?) with 

 a very narrow apophysis forming a prolongation of the inner edge. The 

 apophysis and inner edge are furnished with rather long bristly hairs of red- 

 dish color; second joint short, triangular; tiiird (femur) joint longest ; fourth 

 (tibia), rifth (metatarsus) and sixth (tarsus) respectively smaller ; the third 

 and fourth are largest beyond the center, and aie furnished on the inside 

 with fine liairs of variable length; .shorter hairs on outside; color light red- 

 dish \-ellow; fifth and sixth joints cylindrical and (losely united; furnished 

 all around with hairs of variable lengths: on the inside with two rows of 

 short bristles; color of rive and six dark brown; at the end of the sixth joint 

 is a semi-lunar orifice closed by a ilouble curved li[». through which is pro- 

 truded at times a grayish soft mushroom shaped appendage. The first joint 

 of the labial palpus is sub-cylindrical, nearly as long as the maxilla to which 

 it is clo.sely attached. Second joint short, cylindrical ; third joint scarcely 

 longer, somewhat triangular; fourth joint, eciuals first three, but more slender; 

 fifth still more .slender and longest ; sixth and seventh joints respectively sliorter 

 and thinner. As a whole these palpi are very slender, short, pale yellowish, 

 well furnished throughout with fine liairs of variable length, some quite long. 

 Situated in continuation of the sternum, and between the mandibles below, 

 is a complex lingua variously furnished with hairs, membranes, lips, etc.. 



