INTERNAL ANATOMY OF THE GAMASIN^E. 323 



Fig. 56. (Centre of Plate.) The sacculus foemineus, with its appendages and the lyrate organ, and 

 ovary of an adult female Lcelaps oribatoides (page 303), in situ, seen from above; x 175. The 

 two globular diverticula of the sacculus are seen, close together, above the lyrate organ. The 

 long winding comu sacculi contains all the spermatocysts, as is usual in oldish specimens ; the 

 eggs are attaining a considerable degree of development, but the most mature egg is not shown 

 in the drawing. The ringed tubes are not shown quite to their distal extremities. 



Fig. 57. (Left margin.) Sacculus foemineus and cornu and part of the ringed tubes of an adult female 

 Lcelaps vacua (page 303) ; x 300. The cornu contains numerous spermatocysts, and some 

 remains are seen in the sacculus ; compare the former with figs. 27, 28. The tube between 

 the sacculus and cornu is extended; in situ it is wound round the organ. 



Fig. 58. (Right lower margin.) Sacculus foemineus, cornu sacculi, &c. of an adult female of a small 

 Lcelaps, sp. ? (page 303) ; x 150. The spermatocysts are here seen both in the sacculus and 

 cornu. 



Fig. 59. (Centre of upper margin.) Sacculus foemineus, cornu, ringed tubes, lyrate organ, and camera 

 spermatis of an old adult female Lcelaps acuta (page 303), seen from above; x 100. The tube 

 from the cornu to the camera is extended by the sacculus and lyrate organ being moved 

 further from each other than in nature. In situ the sacculus lies between and above the arms 

 of the lyrate organ, and the tube winds round the former. The ringed tubes are cut short. 

 The sacculus is turned a little on its side ; in situ, its cornu is downward. 



Fig. 60. Sacculus foemineus, cornu sacculi, ringed tubes, lyrate organ, and a few ova of an adult female 

 Holotaspis marginatus (page 304), seen from above; x 160. The short and singular cornu is 

 between the sacculus and the lyrate organ. 



Fig. 61. (Centre of lower margin.) Sacculus and ringed tubes of an adult female of a small Holotaspis, 

 sp. ? (page 304), seen from above ; x 150. There is not any cornu sacculi. 



Fig. 62. (Left margin.) Sacculus foemineus, ringed tubes, and lyrate organ of an adult female Lcelaps 

 cuneifer, seen from above ; x 150. 



Fig. 63. (Right lower corner.) Sacculus foemineus, ringed tubes, and lyrate organ of an adult female 

 Holotaspis montivagus (page 304), seen from above. Organs in situ ; x 150. 



Fig. 64. The trefoil of three small sacs, &c, dissected out of the sacculus foemineus of an adult female 

 of the same species ; x 300. 



Fig. 65. (Near middle of left margin.) The lyrate organ, camera spermatis, ringed tubes, &c. of an 

 adult female Lcelaps (?) ligoniformis (page 305), seen from above; x 150. There are not any 

 sacculus foemineus, cornu, &c. 



Fig. 66. Stalked receptacle (spermatheca?) found close to the mouth of the ringed tube on each side of 

 the body of the adult female of the same species, seen from the side; x 340 (page 305). A 

 small piece of the cuticle of the acetabulum of the third leg is seen on edge at the left of the 

 drawing. 



Plate XXXV. 



Fig. 67. Horizontal, rather thick, section of an adult female Hcemogamnsus horridus, almost at the level 

 of the dorsal surface of the brain, where that organ comes nearest to the dorsum ; x 75. The 

 sacculus foemineus, with part of its cornu, and a portion of each ramus are seen in the centre 

 of the figure; the rami are practically shortened (i.e. the whole length is not seen), becaus 

 from their bending downward the section cuts the dorsal wall of each ramus at its bend; thus 

 the apparent csecal anterior ending of each ramus is not the termination of that organ, but the 

 place where the section strikes the curve. The ringed tubes would lie below the section. The 

 distal portion of one arm of the lyrate organ is seen on each side, crossed by the rami. The 



