of excretion, which fills the rectal ampule, and continue elimina- 

 tion during deposition of eggs. The glands concerned vith ovi- 

 position become active the moment it commences; thus the accessory 

 glands of the uterus secrete a substance to facilitate the passage 

 of the eggs to the genital aperture; the gene's organ secretes a 

 substance which cooperates in the formation of a gluey substance. 

 The salivary and coxal glands, the function of which is associated 

 strictly with the digestion of blood, work afterwards at the meal, 

 reducing and degenerating it so that by the time the female has 

 finished oviposition hardly any traces (of ingested blood) can 

 be found." 



"(2) The young, unfed male, whose genital organs are small, 

 shows indifference, but, differently from females, these organs 

 mature and form sperms although the individual has not yet taken 

 a blood meal. The gut utilizes the gross substance accumulated 

 during the immature stage, and this is sufficient for mating, 

 after which the individual dies. The salivary glands develop 

 only slightly and do not secrete anticoagulin or toxin; the 

 coxal glands do not become differentiated, and the malpighian 

 tubules are small and in a state of repose." 



"In those males that feed on blood at a certain time in 

 their life, always after having first mated, an immediate 

 arousing of all the physiological activities comnences in those 

 organs that, except for the gonads, have been in a torpor. The 

 salivary glands begin functioning, as well as the coxal glands, 

 and produce substances of agglutination and anticoagulin for 

 the duration of the blood meal. The gut, which has completely 

 absorbed the reserve substance, proceeds to digest the blood 

 and the malpighian tubules send the excretory products which 

 they have elaborated to the rectal ampule. Successively, 

 sperm formation increases the secretory activity of the seminal 

 vescile and of the appendage of the white gland so that a flood 

 of viscous secretion for the dilution and nutriment of the sperm 

 appears." 



"From the examination of the anatomical and physiological 

 results it is evident that in the male and female of R. sanguineus 

 there exist noticeable differences in the development^and period 

 of fvmction of the various organs," etc. 



- 721 _ 



