140 William Morton Wheeler 



seen the two types of C. igneus^ which were in the Menge Collection, 

 I believe that my study of the types of C. mengei, together with the 

 foregoing considerations, gives ample ground for regarding the two 

 species as synonymous. 



Of the species as thus defined to include also C. igneus, Mayr shaw 

 12 specimens, and the same number was seen by Ern. Andre. The 

 105 specimens which I have seen, are distributed as follows: 86 workers 

 and 2 males in the Geolog. Inst. Koenigsberg Coll. (B 19756, XXB 201, 

 B 19322, XXB 1592, B 5459, B 18996, B 11729, B 19673, IB 355, 

 B 18373, B5215, XXB 2098, XXB 1327, B 14149, B 5921, B 5204, 

 B 19021, B 18376, B 11724, XXB 521, XXB 1686, B 1324, B 19088, 

 XXB 1555 etc.), 16 workers in the Klebs Coll. (K 5633, K 5585, 

 K4190, K3547, a 68, K1750, K4172, a 127, a 26, K2641, K2621, 

 K3544, a 145, K4195, K 765, K 5624) and one worker in the Berlin 

 Museum (298). 



The two specimens B 18 651 and B 14935, which I regard as 

 representing the hitherto undescribed male of C. mengei, are nearly 

 8 mm long, black, with ample yellowish wings, with brown stigma 

 and paler veins. The pilosity is sparse, the hairs being short and 

 visible only on the gaster. The body is slender and shaped like that 

 of most recent species of Camponohis, the head narrower than the 

 thorax, suborbicular with rather small eyes and ocelli and the mandibles 

 edentate, though having a rather broad apical border. Clypeus 

 carinate. Antennae slender; maxillary palpi very long. Thorax robust, 

 with convex mesonotum and scutellum; epinotum in profile with 

 subequal base and declivity, the former sloping and slightly convex, 

 the latter slightly concave. Petiole thick, low and transverse, with 

 rather sharp superior border. Gaster long and slender, with small 

 narrow genitalia, the stipites and volsellae being shaped much as in 

 the other species of the genus. Legs long, with the tarsal claws and 

 empodia enlarged. 



Although the workers I have seen vary considerably in the size 

 of the body and especially of the head, they all have the aspect of 

 mediae and minors and I have seen no specimen with the head 

 sufficiently large to merit the designation of major worker. One 

 might infer from this fact that the workers of the amber Camponotus 

 were less polymorphic than those of the recent allied species. Such 

 an inference, however, would be premature, because the major workers 

 in recent species are not only produced in much smaller numbers in 

 the colonies than the mediae and minors, but they are less inclined 



