PARACOROTOCA AKERMANI (vVARREN). 365 



Fig. 76. — X 200. An ovarian tuloe, showing a corpus luteum (c.l.) 

 where an egg has matured. A mass of nutritive cells surmounts each 

 ovum. An ovum beginning to be differentiated is seen at d. o. 



Fig. 77. — x 200. Another ovarian tube with a large ovum surrounded 

 by its follicle. 



Fig. 78. — X 400. Cross-section of vagina near the external opening. 



Fig. 79. — X 150. Vertical longitudinal section of the ventral portion 

 of the posterior extremity of the female abdomen. Note the mass of 

 gland-cells pouring a secretion into the recess lying above stenium X. 

 The gland and recess are lateral and paired. Possibly the gland secretes 

 a fluid for sexual I'ecognition. 



Fig. 80. — x 150. Cross-section through the front portion of segment 

 X, showing accessory gland (;/?. c), practically continvious with recog- 

 nition-gland igl. r.). The secretion (sec.) of the accessory gland is shown. 



Fig. 81. — x 550. Section through spermatheca as it is issuing from 

 the spermathecal gland. Semen from copulation is seen in the sperma- 

 theca, which is internally ridged like a trachea. It is presumed that 

 the spermathecal gland pours a secretion into the spermatheca for 

 maintaining the spermatozoa in an efficient condition. 



Fig. 82. — x 20. Dorsal view of the presumed full-grown larva of 

 Paracorotoca. Note the paired abdominal lateral exudatory organs, 

 the minute ocellus and the " olfactory tooth " at the distal end of the 

 2nd joint of the antenna. The articulating membrane {a. m.) of the 

 antenna with the head is so wide as to mimic an additional joint. 



Fig. 83. — x 20. Ventral view of the larva. Note supra-anal plate 

 on segment X surrounded by a ring of setse. 



Fig. 84. — X 50. A right antenna. The terminal bristle of the 3rd 

 joint would appear to be an especially delicate tactile organ. 



Fig. 85. — x 85. Inner view of maxilla 1, showing lacinia (la.), a huge 

 palpiger (^5?.) fused with the stipes, and a 3-jointed palp. 



Fig. 86. — x 85. Posterior view of the mouth-parts of the larva in 

 situ. Note maxilla 1 with ligula, palpigers and labial lobes fused 

 into a median plate bearing a 1-jointed palp (^.)- 



Fig. 87a. — x 30 and 150. Prothoracic leg of larva, with an enlarged 

 view of terminal claw. 



Fig. 87b. — X 30 and 150. Mesothoracic leg and claw. 



Fig. 87c. — x 30 and 150. Metathoracic leg and claw. 



Fig. 88. — X 600. Median vertical section through the median tergal 

 gland and its receptacle of the larva, situated between segments VIII 

 and IX. Note that the fat tissue has stellate small nuclei and large 

 globules of fat ; compare with fig. 74. 



