Vol. XXvii] ENTOMOLOGICAL XE\VS. 263 



Two new dark-colored Species of the Genus Euryco- 

 tis (Orthoptera, Blattidae). 



By MORGAN HEBARD, Philadelphia, Pennsylvania. 



(Plate XIV) 

 Eurycotis abdominalis new species. (Plate XIV, Fig. 2.) 



The present species appears to be widely separated from 

 any of the known forms of Eurycotis. Its position in the 

 genus is after the smaller and more slender species (which 

 include the genotype, . mystcca) and before the large and 

 heavy species (in the linear arrangement of which we would 

 put first, . tibialis, here described). This insect is distinctive 

 in the shining blackish coloration with striking vinaceous- 

 rufous spots on each side of the metanotum and the six proxi- 

 mal dorsal abdominal segments. The shape of the caudal 

 margin of the pronotum and of the lateral tegminal pads, the 

 degree of latero-caudal production of the fifth to seventh dorsal 

 abdominal segments and the shape of the supra-anal plate are 

 also of decided diagnostic importance. 



TYPE: 9 ; Central America. (Rev. T. Heyde.) [Hebard 

 Collection Type No. 420.] 



Description of Type. Size medium large for the genus, form robust. 

 Head much as in E. opaca; large, face weakly convex, ocellar spots in 

 normal position (meso-dorsad of antennal sockets) almost obliterated. 

 Pronotum with polished surface smooth hut showing faint irregular- 

 ities, evenly convex except cephalo-laterad where the convexity is more 

 decided; cephalic margin transverse but convex ventrad, thus embrac- 

 ing the head, the cephalic angles thus being deflexed, these broadly 

 rounded; lateral margins broadly convex to caudal angles which are 

 produced caudad and sharply rounded ; caudal margin transverse but 

 rather strongly though broadly concave in each lateral third, the mesal 

 third being broadly convex. Tegmina represented by small lateral pads 

 extending to end of basal fifth of metanotum; surface polished but 

 criliroso-rugulose, weakly convex except at costal margins where tin 'y 

 are flattened; costal margin weakly convex, sutural margin strongly 

 convex to sharply rounded apex situated on costal margin. Surface of 

 mesonotum, metanotum and dorsal abdominal segments including 

 supra-anal plate, as polished and smooth as pronotum. Caudal mar- 

 gin of metanotum very similar to that of pronotum but with produced 

 latero-caudal angles more sharply rounded. Latero-caudal angles of 

 fifth to seventh dorsal abdominal segments produced in increasing 

 ratio caudad with sharp apices, these productions not nearly as decided 



