Preliminary catalogue of the Crayfishes of Kansas

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FAXON, WALTER
PRELIMINARY CATALOGUE OF THE CRAYFISHES OF

KANSAS,

Pu Pic stdout. College ee
Rep isl 1885.1 pl4e

M.Washburn College Lab. Nat

Hist, (Db. 31 (BBS, pr ide-l42

140

Preliminary Catalogue of the Crayfishes of Kansas.

By Water Faxon, A.B., Sc. D.

1. Cambarus simulans Faxon.— Proc, Amer. Acad. Arts and Sci., XX.
112, 1884,—Mem. Mus. Comp. Zool., Vol. X., No. 4, p. 48, Pl. L., fig. 12;
Pl. VIIL., figs. 3, 3’, 3a, 3a’, 1885.

Tributary of Medicine River, Barber Co. Messrs. Williams and Cragin.
Fort Hays (Coll. Mus, Comp. Zool.).

2, Cambarus gracilis Bundy.— Bull, Ill. Mus. Nat. Hist., No. L., p. 5,
1876.—Trans. Wis. Acad. Sci., V. 182, 1882.—Geol. Wis., Surv. of 1873—
79, I. 403, 1883. Faxon, Mem. Mus. Comp. Zool., Vol. X., No. 4, p. 56,
Pl. VIIL., figs. 4, 4’, 4”, 1885.

Labette Co, W.S. Newlon.

3. Cambarus Diogenes Girard. Proc. Acad. Nat. Sci. Phila., VE 88,
1852. Cambarus obesus Hagen, Ill. Cat. Mus. Comp. Zool., No. IIT., p. 81,
Pl, L., figs. 39-42; Pl. IIL, fig. 163; Pl. TX., 1870.

Leavenworth (Coll. Mus. Comp, gee

4. Cambarus immunis Hag at. Mus. Comp. Zool., No. Ti:
p: (2, fies. 1015102; Ph TIT, fe 160- Pl. VIL, fig. 6,1870. Cambarus
ye Hlcerickt Tenth Ann. ‘Rep. fear Nat, ee nee Minn. for 1881,
p. 253, 1882.

Leavenworth (Coll. Acad, Nat. Sci, Phila.), Ellis (Coll. C. H. Gilbert).

4a. Cambarus immunis Hagen, var. spinirostris Faxon.—Proc. Amer.
Acad. Arts and Sci.. XX. 146, 1884,—Mem. Mus. Comp. Zool., Vol. X.,
No. 4, p. 100, PI. L., fig. 5, 1885.

Ward’s Creek, Shawnee Co.; F. W. Cragin and J. B. Fields. When I
described this variety in 1884, I had not seen the first form of the male,
which is included among the specimens collected by Messrs, Cragin and
Fields, he lateral spines of the rostrum are distinct as in the second-
form male and in the female; the sets on the second pair of legs are well
developed; the first abdominal appendages are shaped exactly as in the first-
form male of the typical C. ¢mmunis.

5. Cambarus Nais. sp. nov.—Male, form |1.—Rostrum long, concave
above, lateral margins converging from the base to the lateral spines, which
are small but distinct; acumen of moderate length, acute. Post-orbital
ridges provided with a minute anterior spine. _ Carapace smooth and light-
ly punctate above, granulate on the sides; lateral spine small, acute; ceryi-

cal groove sinuate, ending anteriorly in a small branchiostegian spine; sub- -
orbital angle not prominent ; areola very narrow, punctate, the margins
parallel from the anterior to the posterior triangular fields; the length of
the areola is equal to one-half the distance from ‘the tip of the rostrum to
the cervical groove. Abdomen as lony as the cephalothorax. Proximal
segment of the telson’ bispinose on each side, distal segment shorter than
the proximal. Antenne longer than the body ; lamin a little longer

141

than the rostrum, broad, broadest at the middle, subtruncate at the end,
with an external apical spine. Third maxillipeds densely setose within and
below. Anterior process of the epistoma with very convex sides. Chela
broad, flattened above, punctate, external border marginate; inner margin
of the hand short, with a double row of dentiform tubercles; fingers long,
movable one tuberculate on the external border, toothed on the internal
border ; external finger flat above, internal margin toothed, and bearded at
the base. Carpus armed with a row of small tubercles on the upper side,
with a strong and acute internal median spine and a small one at the base ;
on the lower side the car pus is provided with a prominent median spine and
an external one at the point of articulation with the chela; in some specimens
there is a small spine on the lower face of the carpus, between the median
spine and the large one on the internal margin. Third pair of legs arined
with a hooped tubercle on the inner margin of the third segment. First
pair of abdominal appendages of moderate length, twisted, deeply bifid,
very broad in the middle; rami. slender, stylifor m, strongly "recurved, the
inner one a little shorter and more curved than the outer one, the outer
one corneous. Leneth from tip of the rostrum to the end of the telson.
61mm, Length of antennze, 67 mm.

The second ‘form of the male differs from the first form in having smaller
chelae, the tubercles on the third pair of legs less developed, the first ab-
demiial appendages less deeply cleft, the rami stouter, blunter, and not
corneous.

In the female the chela is similar to that of the second form of the male,
the sternum between the fourth pair of legs is smooth, the annulus ven-
tralis triangular with a median longitudinal fissure,

Labette Co.; W. 8. Newlon. 5 males form Es: 5 males form II.,7 fe-
males.

This species much resembles C. virilis, especially the form called variety
A by Dr. Hagen. It differs in the shape of the first abdominal append-
ages of the male. In @. Nuis the rami of these appendages are shorter and
more strongly curved than in C. viritis, but not so much recurved as in (
immunis, The areola is narrower than in C. virilis. he first abdominal
appendages are very like chose of (. Pa/mer?, as far as can be seen by a
comparison of the second-form males alone ; but the areola is not obliter-
ated in any part of its course in ©, Nais and the rostrum is more tapering
than in C. Palmert.

6. Cambarus virilis Hagen —lIll. Cat. Mus. Comp. Zool., No, LLL. p.
63, Pl. I. figs, 23-28, Pl. IT. figs. 128-132, Pl. ILI. fig. 155, Pl. VILL,
1870. Cambarus debilis Bundy, Bull. Il. Mus, Nat. Hist. No. I. p, 24,
1876.—Trans. Wis. Acad. Sci. V. 181, 1882.—Geol. Wis. Surv. 1873-79,
I. 403, 1883. Cambarus couesi Streets, Bull. U. 8. Geol. Geogr. Sury.
Terr., III. 803, 1877

Tributary of Kansas River, Shawnee Co. F. W. Cragin. Ward's
Creek, Shawnee Co, J. B. Fields and F. W. Cragin. Wabaunsee Co. J.
B. Fields. Garden City, F. W. Cragin. Leavenworth (Coll. Acad. Nat.

‘Sci. Phila.) Manhattan, (Coll. Acad. Nat. Sci. Phila.) Republican River,

northwest of Fort Riley (Coll. Acad, Nat. Sci. Phila.) Ellis, (Coll. Pea-
body Acad. Sci, Salem, )*

142

4. Cambarus negleetus sp. nov.—Male, form I.—Rostrum broad, sub-
excavated, with a median longitudinal carina; sides nearly parallel from the
base to the lateral spines, which are very small, brown, and horny; acumen
of moderate length. Post-orbital ridges with very smali anterior spines, or
none. Carapace oval, flattened above, punctate, lightly granulate on the
sides, lateral spine obsolete, antero-lateral border angulated below the eye ;
areola of moderate width, dilated anterivrly and posteriorly. Abdomen
equal to the cephalothorax in length; basal segment of the telson two-
spined on each side, Antennze shorter than the body; lamina as long as
the rostrum, broadest toward the distal end, apical spine of moderate
length. Anterior process of the epistoma long, subtruncate. Third pair
of maxillipeds hairy within, naked below. Chelipeds short; chela broad,
punctate above and below, inner margin furnished with a double row of de-
pressed squamous tubercles; fingers of moderate length, more or less gap-
ing at the base, with a row of round tubercles on their opposed edges, outer
margin of the movable figer furnished with low tubercles. Carpus broad,
punctate above, with a strong median spine on the internal border and a
small one near the base; there are no spines below. Superior border of
meros armed with two obliquely-placed ante-apical spines; the lower face
of the meros presents two rows of spines. Third segment of the thira
pair of legs hooped. First pair of abdominal appendages nearly straght,
terminating in fwo long, slender, pointed, horny styles; the anterior style
(outer part of the appendage) a little longer than the posterior and slightly
recurved,

In the second form of the male the first abdominal appendages are cleft
but a short distance. The terminal part of the appendages is stouter and
not corneous, and the tips of the rami are rather blunt.

In the female the annulus ventralis presents a deep transverse fossa,
bounded on all sides by a prominent wall, which is bituberculate in front.

Length of a male, form IL.,74mm, Lenth of areolal3 mm. Breadth
of areola in the middle, 3 mm.

Mill Creek, Wabaunsee Co.; F. W. Cragin and J. B. Fields. 2 males
f. I,, 1 female.

This is the species mentioned, but not named, in my Revision of the
Astacidee, page 94, under C. propinguus. When that work was written J
had seen but three specimens of this crayfish, all of them second-form
males, without locality. I then forbore to present a complete description
of it. The collection of Messrs Cragin and Fields supplies the first-form
male and the female. In general appearance this species nearly resembles
C. propinguus, but the sexual appendages are quite different, resembling
those of CL rusticus, var. placidus.

The tips of the fingers are orange-colored, preceded by a dark-colored
annular band.

*The Peabody Academy specimens from Ellis were collected some years ago
by Dr. L. Watson.

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