THE BURROWING BARNACLES (CIRRIPEDIA: ACROTHORACICA) 61 



bears three blunt cusps and many fine tubercles, rather than sharply- 

 pointed "teeth." The anterolateral angle bears the most distinct 

 cusp, followed posteromedially by a diastema, and a cutting edge 

 with two apparent cusps and a row of fine tubercles. The acute 

 posterior angle possesses typical hairs. The base of the mandible 

 bears the usual chitinous extension to which there seems to be at- 

 tached a striated fascia continuous with the general mouth field 

 support framework. This framework also involves the first maxillae 

 and extends anteriorly to the area where the head is attached to 

 the mantle. 



The first maxiUa has the usual long curved teeth at the antero- 

 lateral angle. There are two prominent teeth here, with additional 

 smaller ones at the bases. A gap and haired surface extends medially. 

 The usual long, curved apodeme is present posteriorly. 



The second maxilla appears typical. 



The male is the usual reduced bag of gametes without well-developed 

 organ systems except that of the reproductive system (figs. 11 g, h). 

 A penis is present. The antennules appear to have an inner tube 

 inserted into the heavier chitinous antennule proper. 



The outer skin of the male is arrayed with rows of fine dots, which 

 become minutely spine-like scattered around the antennules. The long 

 penis sheath is faintly annulated, with rows of extremely fine spines, 

 and bifid at the tip. 



This species is considered to be very close to Lithoglyptes habei, 

 being differentiated by the characteristics stated in the diagnosis. 



The setation on the terminal cirri is typical of the genus. A single 

 seta is present on the outer curvature on the distal end of every few 

 segments, and is about one to one and a half times as long as the 

 segment. On the inner curvature each segment bears a pair of setae 

 medially about as long as the segment, and a pair distally about 

 twice as long as the segment. The setae on the inner curvature are 

 faintly plumose. 



Lithoglyptes habei (Tomlinson) 



Figure 12 

 Kochlorine habei Tomlinson, 1963, page 270. 



Diagnosis: Lithoglyptes with mantle aperture armed mth a tapered 

 projection usually terminating anteriorly at or near a strong spur- 

 like spine. Strong spines, bifid teeth, and bristles line both granular 

 lips of the aperture, and a granular lateral bar reinforces the sides of 

 the mantle sac. Orificial knob present. 



Distribution: Twelve dried specimens in Kelletia lischkei Kuroda 

 from Tomioka, Amakusa, Kyushu, on rock 10 meters below the 



