264 ENTOMOLOGICAL NEWS. [June, 'l6 



and broader than in opaca, the longest less than half the diameter there 

 of the segment. Supra-anal plate triangularly produced; surface con- 

 vex mesad, becoming somewhat more decided meso-distad, concave 

 laterad; free margin weakly convex laterad, sharply and roundly 

 emarginate mesad, the lateral productions thus formed rounded to an 

 equal degree. Subgenital plate of normal form in the genus. Limbs 

 and armament of the same normal for the genus, no indication of en- 

 largement or flattening of the caudal tibiae. 



frleasurements (in millimeters) of type. 



Length Inter- Length Width Length Width Greatest Length of 



of ocular of pro- of pro- of of width of caudal 



body width notum notum tegmeni legmen abdomen tibia 



9 30.6 4.7 8.8 13.1 6.6 3.2 15.7 11.6 



Coloration. Shining blackish brown above and below ; a large, longi- 

 tudinal, oval, slightly raised spot of cinnamon rufous laterad on the 

 metanotum, and each dorsal abdominal segment with a broad lateral 

 mark of this color, these widening caudad as their internal margins 

 are oblique, but at the immediate caudal margin of each segment a 

 narrow invasion of the dark general coloration occurs. 



The type is unique. 



Eurycotis tibialis new species. (Plate XIV, Fig. 1 and Text Fig.) 



This unicolorous insect is likewise anomalous, but should 

 be placed first among the broad species of the genus ; imme- 

 diately following, but in no wise closely related to E. abdomi- 

 nalis. 



This species is followed in linear arrangement by E. opaca 

 but differs widely from that insect in the more decidedly flat- 

 tened head, distinctive lateral tegmina, less produced margins 

 of the fifth to seventh dorsal abdominal segments (in this 

 feature intermediate between abdominalis and opaca}, distinc- 

 tive supra-anal plate in both sexes and subgenital plate in 

 male, remarkably enlarged and flattened caudal tibiae and pro- 

 portionately longer caudal tarsal joints which are contained 

 1.24 times in the caudal tibial length, (in opaca 1.5 to 1.73 

 times.) 



TYPE: $ ; San Francisco Mountains, San Domingo, Sep- 

 tember, 1905. (Aug. Busck.) [United States National Mu- 

 seum.] 



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

 Head much as in E. opaca but with face distinctly more flattened; 



1 A third of the tegmen is covered by the projecting latero-caudal 

 angles of the pronotum. 



