202 



ANATOMY. 



spirally, and originating in a superior free and very fine filament. 

 (Ranatra.) 



5. Testiculi furcatl (PI. XXIX. f. 6.). The testis here is also a 

 twisted canal, which furcates at its extremity and extends into two 

 short capitate ends *. (Apis mellifica.) 



6. Testiculi convoluti. (PI. XXIX. f. 7-)- The filiform testis is 

 very long, much longer than the abdomen, and convoluted into some- 

 times a round (TJyticus), sometimes ovate (Calosoma) ball. (Carabodea 

 Hydrocantharides.} 



B. COMPOUND VASCULAR TESTES. Each testis is a bundle of 

 shorter or longer filiform or filamentary blind vessels, or bags, which all 

 unite into one common duct. 



1. Testiculi scopacci. (PI XXIX. f. 8.). The short blind processes 

 which the testes form, are of equal length, and sit close together upon 

 the upper side of a common duct. (Hydrophilm.) 



2. Testiculi fasciculati. (PI. XXIX. f. 9.). The somewhat longer 

 blind processes are tolerably equal in size, and are seated contiguously at 

 one spot, namely, at the end of the funnel-shaped distended sperm duct. 

 (Buprestis Trichodes, Clerus, Epidydimis in Locusta, PI. XXVIII. 

 f. 5, .). 



3. Testiculi stellati. (PI. XXIX. f. 14.). From the end of the 

 simple sperm duct, short fine, star-shaped or radiating filaments 

 originate, (Apate.) 



4. Testiculi flosculosi. (PI. XXIX. f. 15.). The filaments at the 

 end of the sperm duct are here short, distended bags, which are placed 

 around the distension of the sperm duct, like the petals of a flower of 

 the class Syngenesia. (Asida, Te.nebrio, (Edemera.'} 



5. Testiculi imbricati. (PL XXIX. f. 10.). Short purse-shaped, 

 smooth pockets, which pass over each other like tiles, clothe a broad 

 compressed bag, which runs out into a short, at first serpentine sperm 

 duct. (Locusta viridissima.) 



C. COMPOUND VESICULAR TESTES. Each testis consists of oval or 

 round and large or small vesicles, which unite either by degrees together, 

 or at one end of the there distended sperm duct. 



1. Testiculi racemosi. (PI. XXIX. f. 11.). The bladders are 



* Suckow, in Heus. Zeitschr. f. d. Org. Physik. vol. ii. p. 234. PI. XII. f. 30. 



Arcording to Swammerdamm, Biblia Natur.v, the testes are kidney-shaped bodies. 



