NATURAL SCIENCES OF PHILADELPHIA. 
3i 
CoRDULiA Leach. 
C. viridi-cenea. 9 Labium and rhinarium testaceous, face bragsy-greenisb, 
villous, front coarsely punctured, deeply emarginate, antennae and eyes pale 
brown, vertex dark green, not greatly elevated ; thorax brassy green with two 
oblique, white vittae upon the pleura ; wings with a slightly yellowish tint, 
nervures pale brown, pterostigma pale falvous, triangles of all the wings crossed 
by one nervule, eight cross-veins to che costal, six between the point-cubital 
and the pterostigma; membranule white; abdomen depressed, segments brassy 
with a pale testaceous, interrupted stripe each side, beneath dull testaceous :; 
caudal appendages long, hairy, sub-fasiform, acuminate ; vulvar scale elongated, 
tapering, entire, extending as far as the inferior tip of the ninth segment. 
Hakodadi, Japan. 
Length of posterior wing 17 J lines. Pterostigma 1| line. Abdomen. 17 .. 
Oerci 2. Total length 25. 
Panorpa, Linn. 
P. leucoptera. 9 Head black above, testaceous upon the antennal regioii, 
rostrum dark testaceous, with a black line each side, palpi testaceous with u 
piceous tip, antennae dusky, eyes black, with the posterior lobe pale testaceous ; 
thorax pale testaceous, a little blackish upon the prothorax, mesothorax with 
an irregular black superior margin, with which four spots of the same color are 
connected against the origin of the wings ; wings lactaceous, costal nervale 
black, discoidal and most of the transverse nervules whitish, apical longitudinaf 
nervules brown ; three pale brown spots upon the sub-costal areole, two of 
vrhich are enclosed within it, one at the origin, the other in the middle, the 
third, runs from the parostigmal areole to the middle of the wing ; several small, 
transverse spots are also found near the posterior margin and a large one near 
the apex; legs testaceous, origins of the tarsal joints and nails blackish ; abdo- 
men dull testaceous, the three basal articles and apices of the two next black- 
ish, anal appendages dusky. 
Hakodadi, Japan. 
Length to tip of abdomen 7^ lines. Alar expanse 14| lines. 
Prodromus descriptionis animalium evertebratorum quas in Expeditione arl 
Oceanum Pacificum Septentrionalem, a Eepublica Federata missa, Cadwala- 
daro Einggold et Johanne Rodgers Ducibus, observavit et descripsit 
W. STIMPSON. 
Pars. IV. CRUSTACEA CANCROIDEA ET CORYSTOIDEA. 
Cancrid^. 
41. Cancer antennarius, Stimpson ; Bost. Jour. Nat. Hist, vi., pi. xviii.— in 
portu "San Francisco." 
42. Cancer gracilis, Dana; U. S. Expl. Exped., Crust, i. 153; pi. vii. t 2. 
— California. 
43. Cancer magister, Dana; U. S. Expl. Exped., Crust, i, 151, pi. vii. t 1. 
— In portu '* San Francisco." 
44. Cancer productus, Randall; Jour. Acad. Nat. Sci., Pliilad. viii. 116.-~In 
portu ' ' San Francisco. ' ' 
45. Etisus coNVExus, nov. sp. Parvulus ; carapax perconvexus ; areolis fere ut 
in E.levimano, sed magis prominentibus ; superficie mediana et postica Isevi, antice 
et lateraliter partim rugosa. Frons convexa. Margo antero-lateralis quinque- 
dentata, angulo orbitae incluso ; dentibus sat prominentibus, apicibus parvis 
acutisque, interstitiis granulosis. Antennae artlculus basalis processu orbitam 
1858.] 
