THE BURROWING BARNACLES (CIRRIPEDIA: ACROTHORACICA) 101 



Three pairs of terminal cirri are present and also rudimentary mouth 

 cirri. The latter are short and unjointed with two or three terminal setae 

 only. These appendages appear to be attached for much of their length 

 to the ventral body surface and to be free only near the distal extremity. 

 There is a single dorsal body process. 



At this point I disagree with Mr. Stubbings. The single specimen 

 that I dissected clearly had two dorsal body processes. The Principe 

 Island specimen that I dissected was a mature female without at- 

 tached male. She measured (in 70-percent alcohol) 1.50X0.75 mm, 

 with a neck length of 0.338 mm mthout spines and 0.489 mm with 

 spines, and a neck width at the narrowest constriction of 0.226 mm. 

 The aperture was 0.28 mm long. 



Figure 26. — Cryptophialus variabilis Stubbings, 1961, from a specimen from Stubbings from 

 Balanus tintinnabulum from Principe Island, Guinea: a, female, side view; b, mouth field 

 with labrum; c, mandible. 



