MORSE: ORTHOPTERA OF NEW ENGLAND. 317 
dirty places it swarms by thousands, undoubtedly doing much 
good as a scavenger, but infinitely more harm on account of its 
omnivorous and insatiable appetite. Like most other members 
of the family, it feeds mainly at night, appearing to detest and 
avoid the light, as one can readily prove by taking a lighted 
lamp suddenly into its haunts, when a hurried scrambling will 
take place towards its daylight retreats, and but a few moments 
will elapse before the last of the busy marauders will have 
disappeared. . . . 
"The Oriental roach is probably the most carnivorous of all 
our Blattidae, though, like most others, it is fond of starchy food. 
It is known to feed upon cheese, meat, woolen clothes, and even 
old leather, and is said to be especially fond of the festive 'bed- 
bug,' . . . which soon disappears from a house infested 
with the Oriental roach. This roach is, however, far too great a 
nuisance in itself to be introduced as a means of eradicating even 
the bed-bug" (Blatchley). 
Surinam Roach. 
Pycnoscelus surinamensis (Linne). 
Blatta surinamensis Linne, Syst. Nat., ed. 12, vol. 1, p. 687 (1767). 
Leucop/iaeasunnawensrs Walden, Bull. Geol. Nat. Hist. Surv. Ct., no. 16, 
p. 53(1911). 
Pycnoscelus surinamensis Scudder, Psyche, vol. 9, p. 100 (1900). 
Pycnoscelus obscurus Scudder, Boston Journ. Nat. Hist., vol. 7, p. 422 
(1862). 
Posterior edge of the lower margin of the middle and hind 
femora sparsely set with hairs ; front edge of lower margin of front 
femora with a denser row of shorter bristle-like hairs. Hind edge 
of pronotum obtuse-angulate with rounded apex. Glabrous, the 
disk of pronotum finely punctate, shining. Smoky or olive brown, 
the disk of the pronotum darkest, but often with a more or less 
chestnut tinge centrally; the nymphs uniformly dark, the adults 
with the antero-lateral margins of the pronotum and basal part of 
costal margin of tegmina dull yellow. 
Measurements. 
Total length Tegmina Hind tibia Pronotum Antenna 
Length Width 
Female 19-21 15 5 6.5-7 4.2-5 9 mm. 
(Males are unknown from the continent of North America.) 
