EMBIIDINEN 71 



im anal appendages. Autenae somewhat defective, but with twenty joints preseat, which together are longi 

 than head and um! i\; basal Joint ->t< mt , cyliinhu -al, se und oue fourth less in ctiameter, its length and 

 diameter equal, first and second joints piceous, with no erect black bristles, remaining joints dark fuscous 

 with black radiating bristles, third antennal Joint equal to two basals, it- sides concave, remaining joints 

 elongate pyriform, thicker beyond middle, fourth shorter, fifthto sixteenth subequal, seventeenth to twentieth 

 a little shorter. Labial palpi rather thick. Maxillary palpi plainly hve-iointed, second and third joints 

 subequal, each a little shorter than first, fourth longer than first but more slender, fifth not longer than third 

 plus the fourth, with numerous pale hairs. The bases of the maxillaa and th 1 are testaceous, remainder 



ol head black. ["horax Battened above, the niesothorax larger than the others, evenly black, no coloi 

 markings. Legs black, last tarsal Joint alutaceous at tip, ungues pale with piceous apex; fore metatarsi greatly 

 enlarged, with pale recurved hairs along edge oflower surface, middle Joint w i t li similar hairs : tarsi of four 

 posterior jegs slender, metatarsi with a dense brush ol thi k, short, black bristles beneath, middle Joint with 

 paler papilla, third Joint slender, long; middle legs slender; posterior femora much incrassated. Left anal 

 appendage one-jointed, but articulated with the body, stout, large, clavate, obliquely truncateat dp, lightly 

 rugose. Right appendage two-jointed as usual, the apical Joint shorter and thinner than th 3 basal. Both 

 appendages have many long brown to black hairs. Between the appendages are two triangulär lamelke. The 

 left one testaceous, the right one black and testaceous apically : each armed with an apical spine pointing 

 transver>ely outward. The median portion of the last ventral segment is placed largely towards the right. 

 From the upper surface the secondavy sexual characters present a different aspect. The terminal abdominal 

 segment (ioth) is obliquely cleft, the cleavage ätarting near the left side and terminating nearly midway 

 between the appendages. I'iie left portion is prolonged into a liastate slender projeetion. Near the base of the 

 left appendage arises a Hat lighter-colored triangulär process (seen from below as the left triangulär lamella). 



Fig. 41. — Haptocmbia Wheelcri (Melander iqdj) tf 



Abdominalspitzc von oben iversjrossi'in 



(Nach Melander loc. eil., 100;. p. 17). 



This overlies the hastate projeetion. The right portion of the last segment terminales in aflattened bifurcate 

 process, the outer tooth of which is beut downward and the upper tooth to the right. The ninth abdominal 

 dorsal segment is very narrow, of about one third the depth ol the others : its posterior margin is arcuate, 

 bulging outward on the right side and emarginate 011 the left. 



From above the head is one half longer than broad, wide at the rather prominent eyes and then 

 sloping suddenly forward and less so bei und the eyes; bind angles very oblique; head not at all quadrangular 

 in outline; no impressed markings; surface evenly, finely rugulose 



Among other characters, the shape of the head, the strueture of the antenna?, the color of the hairs 

 and body and the remarkable sexual Organs are peculiar to this species and readily distinguish it from the 

 other species of Olyntha. 



(ine wingless speeimen from Cuernavaca, Mexico, taken December 26, ioco, by Dr. Wm. W. 

 Wheeler while excavating a nest of Leptogenys Wheeleri Forel ». 



I)<i- 2. Glied des linken Cercus durfte nur abgebrochen sein, wie dies häufig bei Formen mit verdick- 

 tem ersten Glied vorkommt. 



