E. A. (V)CKAYNK 77 



III man Garriguos stated, in liS96, that ho knew an individual, who 

 ou tlie left side looked like a male, on the right like a female. Partial 

 segregation of secondary sexual characters to opposite halves of the 

 body, has also been recorded by Munde, Oberndorf, and Le Centre. 



Lists of gynandromorphous Arthropods have been published by 

 Hagvu, Ochsi'iiiioimer, Bertkau, Wiskott, and Schult/. 



Ochsenh(>imL'r divideii them into perfect and imperfect, and Laeor- 

 dairr further subdivided them into — 



( 1 ) Semilateral (halved). 



(2) Superpose (intermediate mi.xed forms). 



(3) Croise (crossed). 



In .-Klditioii he pointed out that in all three forms the sexual 

 elements ma}' be in equilibrium, but in the last two one or other sex 

 may predominate to any extent. 



A very elaborate classification has been made by Dalle Torre and 

 Friese. 



Group I. Lateral Gynandromorphism. 



1. Left (/, right %. (a) Head alone. 



2. Right c/', left $ . {h) Thorax alone. 



3. Decussating now </ right, (c) Abdomen alone. 



now j" left. {(l) Head and thorax. 



(e) Head and abdomen. 



( /') Thorax and abdomen. 



((f) Whole body. 



Group II. 'Transrerse Gynandromorphism. 

 (Dorso- ventral arrangement.) 



1. Dorsally </, ventrally if. Subdivisions (o) to ((f) as 



2. Dorsally ^ , ventrally </. in Group I. 



Group III. Froutal Gynandromorphism. 

 (An tero-posterior arrangement.) 



1. Anteriorly (/. {a) Head alone. 



2. Anteriorly %. (b) Head and thorax. 



(v) Thorax of one, head anil ab- 

 domen of the other sex. 



