LeConte.]} 406 [Feb. 1, 
Lucidote. L. thoracica from Mexico has been considered as 
identical with P. collaris, but differs by more robust form, 
red scutellum, coarser sculpture, and by the reflexed margin 
of the elytra being much broader. The abdomen of both 
sexes is entirely without phosphorescent organs, and the an- 
tennze are more distinctly serrate than in L. luteicollis. 
80. Photimus (Pyractomena) ecostatus, n. sp.—Elongate, head and 
prothorax pale ; the latter a little longer than wide, rounded on the sides, 
narrower in front, and less broadly rounded at apex, sides depressed, 
scarcely punctured, edge dusky for the greater part of the length ; disc 
finely carinate, with a dark stripe, narrow at the apex, broad at the base, 
which is bisinuate ; hind angles rectangular, blunt at tip. Scutellum dark. 
Elytra finely and densely scabrous, narrowly margined, without discoidal 
elevated lines, sutural, iateral and apical margin pale; a narrow discoidal 
vitta extends from near the humerus to bebind the middle. Antenne dark, 
shorter than the prothorax. Beneath pale, meso- and metathorax, and two 
series of large transverse ventral spots dark ; phosphorescent organs on 5th 
and 6th segments, as two pairs of oval slightly depressed spots of a honey 
yeliow color. Legs piceous, trochanters and proximal half of thighs 
pale. Length 14.5 mm.; .57 inch. 
Key West; one 2, Mr. Edw. Burgess. Allied to Ph. 
borealis, but differs by the elytra being more finely scabrous 
and entirely without elevated lines. 
81. Photimus (Pyractosoma) nitidiventris, n. sp.—Very elon- 
gate, pale. Prothorax with sides broadly flattened, sparsely punctured, 
marked with an elongate lateral dusky spot, disc with a broad dark dorsal 
stripe. Elytra densely scabrous, without elevated lines, strongly margined ; 
sutural, apical and lateral margins pale; a narrow dorsal vitta runs from 
near the humerus to beyond the middle. Meso-and metathorax fuscous ; ab- 
domen pale; 2d and 3d segments with a quadrate spot each side half wav 
between the median line and the side ; 4th segment with a large transverse 
dark spot each side, remaining segments bright yellow, 5th and 6th each 
with a pair of pits connected with the phosphorescent organs, resembling 
Jarge spiracles. Antenne shorter than the prothorax, dark, base pale. 
Legs dark, trochanters and base of thighs testaceous. Length 14 mm.; .55 
inch. 
Enterprise ; one S’ specimen. The scutellum is testaceous 
and the prothorax rather narrowly rounded at apex; in 
another specimen from Capron the scutellum is cloudy, and 
the apex of the prothorax is broadly rounded. Nearly allied 
to P. angustata, but in that species the sides of the prothorax 
are not dusky, while the head and the first four ventral seg- 
