362 Handlirsch — New Paleozoic Insects from the 



branches and it seems possible that this individual may belong 

 to a species distinct from ovalis Scudder or at least to a variety, 

 for which I propose the name E. minor in. (figs. 40, 41). 



Plesiotypes in Peabody Museum, Yale University. Cat. 

 Nos. 47-50. 



Eucamus mazonus Melander. Fig. 42. 



Much smaller than ovalis Scudder with a narrower pronotum 

 and a very stout body. Length of thorax and abdomen 15 mm , 

 equal to the anterior wing. Costal area of the anterior wing 

 comparatively narrow. Radial sector of the posterior wing 

 with 4 large branches, occupying nearly the whole anterior 

 half of the wing, pushing to one side the media and cubitus, 

 which are reduced to 3 parallel veins. The large anal area 

 fan-like, with numerous veins. Pronotum one and two-thirds 

 times longer than broad. Anterior leg delicate, the tibia as 

 long as the pronotum. Probably a male. 



Plesiotype in Peabody Museum, Yale University, Cat. JSo/51. 



Eacmnus pusillus, new species. Fig. 43. 



Resembling E. mazonus, but of a smaller size. The abdomen 

 more slender, the costal area of the anterior wing broader. 



Fig. 43. 



Fig. 43. Euccbhus pusillus. x 4. 



Radius cleft at the end, the sector with (?) 5 branches. Length 

 of the pronotum nearly 5" lm , of the wing ll mm . 



Holotype in Peabody Museum, Yale University, Cat. No. 52. 



Euecenus rotundatus Handlirsch. Fig. 44. 



The experience gained by the study of the new material has 

 led to another determination of the veins of E. rotundatus 



