MORGAN HEBARD lOI 



The present series of this small shining black species, having 

 white palpi and entirely lacking tegmina and wings, has been fully 

 treated with the original description. 

 Pelmatosilpha rotundata Scudder 

 1900. Pelmatosilpha rotundata Scudder, Proc. Davenport Acad. Nat. Sci., viii p. 93, 



pi. ii, fig. 5. [&, Texas {type): 9, Panama.] 



Porto Bello Bay, Panama, (Jennings; in epiphytic Bromeliad), i c?. 



This large shining blackish roach, with large, convex and broadly 

 rounded tegmina, has already been correctly recorded by Caudell. 



Eurycotis bioUeyi Rehn 



1918. Eurycotis bioUcyi Rehn, Trans. Am. Ent. Soc, xHv, p. 321, pi. xviii, figs. I 



to 4. [c^, 9 ; ten Costa Rican localities.] 



Boquete, Panama, III, 2, 1914, (Zetek), i 9, [United States National Museum]. 



The present specimen is slightly larger than any of the originally 

 treated females of this shining blackish brown species, which pos- 

 sesses lateral pad-like tegmina. A very decided amount of 

 cephalic size variation is shown in this insect, the size of the head, 

 however, increasing regularly with that of the body. 

 Measurements {in millimeters) 



Length of Greatest width Length of Width of 



9 body of abdomen head head 



Tablazo, Costa Rica, allotype 20.2 1 1 . 8 5.3 4-9 



Itiquis, Costa Rica, paratype 24 12.1 5.9 5-4 ' 



Santa Maria de Dota, Costa Rica, 



paratype 26 12.8 6 5-6 



La Palma, Costa Rica, paratype 27.8 13 . 1 7 6.4 



Boquete, Panama 30-5 ^5 7-3 6. 8 



Eurycotis pluto new species (Plate V, figure 13.) 



The present uniform shining blackish insect is the largest yet 

 described species of the genus. 1 1 belongs to the group of relatively 

 slender forms having lateral pad-like tegmina. 



The species is very closely related to E. biolleyi Rehn, differing in 

 its great size and relatively narrower form, the greatest abdominal 

 width being contained distinctly over twice in the body length, 

 approximately twice in biolleyi. 



Relationship with the Brazilian E. manni Rehn also exists; 

 comparison with the male t>'pe shows that species to be absolutely 

 black, decidedly smaller, with caudal metatarsi proportionately 

 very decidedly shorter. 



MEM. AM. ENT. SOC, 4. 



