CO129-538-2 Hong Kong University 23-6-1932 - 15-3-1933 — Page 78

Free-Living Nematodes from Hot Springs in China and Formosa. 25

Aphelenchus parietinus Bastian, 1865.

(Pl. 12, Fig. 27).

One male from Changchow, wall of the well in a bath-house, five feet alooove the water. Water temperature 39° C.

Length: 4.46 mm.

K-46. B-7.2. 8-15.3. n-I.

Six females from Foochow, Tang Men Wai Ti Yi Ch'uan (First Spring outside Tang Gate).

Length: 0.43 (0.38-0.48) mm.

∞ -35.6 (34-5-36.9).

B-7.9 (7.7-8.1). 8 -94 (7.0-11.8).

n-6.

A. parietinus has been carefully described by Micoletzky. Therefore we give only our measurements and the drawing of the anterior end in frontal view (Figure 27). We found a row of six papilla and six minute stiffenings arranged around the spear.

Trilobus allophysis (Steiner), 1919,

Three males and fifteen females, Wen Ch'uan near Peiping. Wall of a stone tank for storing water. Water temperature 34° C.

Males:

Length: 1.0 (0.9-1.1) mm.

∞—33·5 (32-34-5). B−5·3 (4.5-5.5). X-9.1 (8.1-10,1),

Females:

Length: 1.1 (0.96-1.4) mm.

カー -3.

1—15.

33.3 (31.6.35). B-4-7 (4-4-5-5) -7.5 (6.8-10.3).

Larval Forms. Dorylaimus sp.

Three specimens, Tangshan near Nanking, overflow of a hot spring, water temperature where collected about 50° C.

35° C.

Length: 1.1 mm.

α-20. B-47. -6.2. Average of three. Two specimens, Sozan, Formosa, sulphur spring, water temperature

Length: 0.75 mm.

-35. B-3.6. Ye-5.5. Average of two.

Microluimus sp.

Four larva, Changchow, wall of a well, 13 feet above the water. Water temperature 48.5° C. Specimens not measured.

DISCUSSION.

It is a general conception and has been specially pointed out by

Supplement No. 1, 1932.

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