502 Mr. R. Shelford’s Studies of the Blattide. 
51. Tribonium guttulosum, W1k. 
Naupheta guttulosa, Walker, |. c. p. 184 (1868). 
2. BRAZIL. 
Allied to 7. elegans, Br., but much larger, head entirely 
black, apical half of antennz fulvous, pronotum and teg- 
mina more heavily marked, abdomen and legs darker. 
52. Senenlara paralella, Wik. (Plate XXX, figs. 7, 7a.) 
Stenoblatta paralella, Walker, |. c. p. 193 (1868). 
322. BRAZIL. 
This extraordinary linear and flattened cockroach has 
apparently not been met with since Walker’s description 
of it appeared. Walker placed it in his family Hypnorm- 
idx (= Plectopterinx) and Kirby (Syn. Cat. Orth. I, p. 179) 
places it at the end of the Plectopterine ; but since the 
wings do not possess a triangular intercalated area this 
classification is evidently wrong; the large, produced 
supra-anal lamina with notched margin and the presence 
of large arolia between the tarsal claws fix the position of 
the genus amongst the Panchlorine of which sub-family, 
it may be considered an aberrant member. 
Walker’s description, so far as it goes, is quite accurate, 
except in his determination of the sex of the specimens, 
and the following may be regarded as merely supplement- 
ary to it:— 
Head much flattened, the vertex between the eyes forming a 
sharp edge, semicircular in outline, eyes very narrow. Tegmina 
punctate at base, radial vein very straight, bifurcate, the lower 
branch ramose, costals numerous, obsolete and irregular, five dis- 
coidal sectors, discoidal field reticulated, nine axillary veins. Wings 
with anterior half flavid, posterior field infuscated, costal veins highly 
irregular and reticulated, median vein quite straight, ulnar vein 
with five branches, two of which go to the dividing vein. Supra- 
anal lamina projecting considerably beyond the sub-genital lamina ; 
cerci equal in length to supra-anal lamina. Legs very short, femora 
without spines, tibia very sparsely spined, the front pair with four 
apical spines only, hind pair with a few in a double row on the 
upper border, two only on the lower border and four apical spines. 
Arolia relatively enormous, tarsi only half-length of tibiz, which are 
two-thirds length of femora, metatarsus not longer than the following 
three joints, shorter than the last joint. 
