COLOSSENDEIDAE 



17 



Remarks. The specimens referred to C. frigida, Hodgson, are characterized as 

 follows : (i) they are of large size and slender build (the trunk is usually 9-12 mm. long 

 and the legs vary from nine to thirteen times the trunk length), (2) the second tibia is 

 usually at least four-fifths of the femur, the tarsus is considerably longer and the claw 

 shorter than the propodus (see Table II), (3) the proboscis in adult specimens is always 

 at least half as long again as the trunk. ^ 



The terminal claw of the oviger varies greatly in length (Fig. 5 a and b) and what 

 Hodgson (1907, p. 64) terms the "thin membranous fold" is not always present.- The 

 seventh palpal segment varies considerably in length, sometimes it is only as long, 

 sometimes more than twice as long, as wide. 



Fig. 5. Terminal segment of oviger with claw of; a and b. Colossendeis frigida, 

 Hodgson: x 36. c. C.scoresbii, n.sp.: < 46. 



The syntypes of C frigida, from the other side of the Antarctic, are slightly more 

 robust, with rather shorter legs (8-66-11 times the trunk length). The holotype of 

 C. megalonyx, Hoek, agrees closely with the syntypes of C. frigida (see Table II); some 

 of the other specimens, however, are intermediate between C. frigida and C. scoresbii 

 (p. 21 and Table II). As suggested by Loman (1923, p. 7) C. megalonyx, C. frigida 

 and C. rugosa may be co-specific, and C. scoresbii may prove to be just a smaller Northern 

 form of C. frigida (p. 21). In that case the species would have to be called by Hoek's 

 name — C. megalonyx. 



'^ The proboscis was rather shorter than is typical in two small specimens of 6-8 and 7-6 mm. trunk 

 length respectively, being 1-45 and 1-27 times the trunk. 



2 The claw may be much worn in adults where the special spines on segments 7-10 are reduced to 

 short stumps. 



