22 8 



ORTHOPTERA 



on account of the capacious crop, and the small gut-like, chylific 

 ventricle ; eight elongate pouches are situate on this latter part 



at its junction with the gizzard. 



The Malpighian tubules are 

 very numerous and delicate ; there 

 are extensive salivary glands and 

 reservoirs ; and on the anterior 

 part of the true stomach there are 

 eight caecal diverticula. The great 

 chain of the nervous system con- 

 sists in all of eleven ganglia two 

 cephalic, three thoracic, and six 

 abdominal. 



The ovaries in Stylo^pyga orient- 

 a^^s consist each of eight egg-tubes, 

 placed at the periphery of a common 

 receptacle or oviduct, the pair of 

 receptacles themselves opening, into 

 a common chamber the uterus 

 which is surrounded by a much 

 branching serific or colleterial gland. 

 In this chamber the egg-case is 

 formed from the secretion of the 

 gland just mentioned. According 

 Fig. 125. Alimentary canal of Stylo- to Miall and Denny ,-^ there is a 



pyqcLorientalis. (After Dufour. ) a, ., i i i. j_ 



Head ; h, salivary glands ; c, saiiv- spemiatheca which opens not mto 



ary reservoir ; d, crop ; e, diver- ^he utCruS but into the cloacal 

 ticula placed below proventriculus ; i i i , -r i i ^ 



/, stomach ; g, small intestine ; h, chamber behind it. Lowne doubts 

 rectum; i, Malpighian tubes; k, ^j^^g diverticulum being a true 



extremity of hind body. ^ . 



spermatheca. 1 he manner m which 

 the eggs are fertilised and their capsule modelled is uncertain.- 



The internal reproductive organs of the male are very com- 

 plex in Stylopyga orientalis ; each testis consists of a number 

 (30 to 40) of vesicles placed on a tube which is prolonged to 

 form the vas deferens. There is a very peculiar large complex 

 gland consisting of longer and shorter utricles, opening into the 

 vesiculae seminales, and forming a " mushroom-shaped gland." ^ 



^ The Cockroach, p. 170. 



? Cf. Ducliamp, Mev. Sci. Nat. Montpellicr, vii. [?1879], p. 423. 



^ Huxley, Maiiual Anat. Invert. Animals, 1877, p. 416. 



