^O studies on Arthropoda. I. 



Fig. 2 c. Left tibia, from the upper side; x 13. 



— 2d. Left tarsus, from the outer side; X 13. — tt. upper 



margin. 



— 2 e. Distal joints of left fourth leg, from above; X ^^/g. 



Fig. 3. Trithyreus parvus n. sp. 

 Fig. 3 a. Left palp and first leg of the male, from the outer 

 side; x 20. 



— 3 b. Left palp of the male, from the outer side; X 35. 



— 3 c. Left palp af the female, from the outer side; X 35. 



— 3d. Left first foot of the male, from the side; x 47. 



— 3 e. Left first foot of the female, from the side; X 47. 



— 3 f . Left fourth leg of the male, from the side ; x 20. 



— 3 g. Left fourth leg of the female, from the side ; x 20. 



— 3 h. The three posterior abdominal segments with fiagel- 



lum of a male, from above; X 60. 



— 3 i. The same segments with fiagellum of a male, from 



the side; x 60. 



— 3 k. Posterior abdominal segments with flagellum of a 



female, from the side; x 60. 



Fig. 4. Trithyreus brevicauda n. sp. (continued). 

 Fig. 4 a. Foot of first left leg of the female, from the side ; X 46. 



— 4 b. Left fourth leg of the male, from the side; X 20. 



— 4 c. Major part of left fourth leg of the female, from the 



side; x 20. 



— 4 d. Posterior abdominal segment witli fiagellum of a 



female, from the side; X 62. 



Plate IL 



Fig. I. Trithyreus brevicauda n. sp. (continued). 

 Fig. I a. Left palp and first leg of the male, from tlie outer 

 side; x 20. 



