22 



B. JV. Kiwkcl, 



and diminishing in thickness from first to third. Second antennae 

 also with rudimentary flageUum ; third joint of peduncle rather stout 

 and tapering very slightly ; fourth joint longer than third and more 

 slender, slightly wider distally than proximally ; fifth joint C3lindrical 

 and longer than fourth, with row of setae on lower margin. 



Epistome elongated in front, in form of slender cone. Upper lip 

 large and strong with distal margin bilobed. Mandibles with elon- 

 gated body, principal cutting edge divided into 5 long slender teeth 

 which are serrated distally ; molar tubercle large, cyhndrical ; palp 

 wanting. Lower lip apically broad, center prominent. First maxillae 

 strikingly broad, inner plate wanting ; outer plater short with distal 



Fig. 7. Coloniastix pusilla Grube. 



margin provided with 3 odontoid spines ; palp 1 -jointed, curved to 

 apex and terminating acutely so that inner margin of palp strikes 

 against distal margin of outer plate, thus forming a true chela. 

 Second maxillae formed of single plate, the distal margin of which 

 is divided into 2 lobes, a small rounded one externally and a broader 

 one medially, both of which are provided with setae. Maxillipeds 

 very strongly developed ; inner plates fused on middle line to form 

 slender triangular plate ; outer plates moderately broad but not very 

 long, extending just beyond distal end of first joint of palp, inner 

 margin smooth and unarmed ; palp 4-jointed, slender, with first two 

 joints cylindrical and second joint slightly longer than first, third 

 joint a little longer than preceding, rather fusiform with a few setae 

 on inner margin, fourth joint clawlike and about as long as second 

 joint. 



