698 L. A. BORRADAILE. 
2. 6th abdominal limb, when present, has the branches neither broad nor styliform but adapted 
for holding the body into hollow objects. Pleura very rare. Abdomen nearly always 
asymmetrical and either soft and twisted, or bent under the thorax. Paquridea. 
Key to the subtribes of the Paguridea. 
I. Abdomen straight or twisted. Carapace firm and more or less compressed in the fore part, 
soft in the hinder part. Fourth pair of legs unlike the third. Rostrum almost or quite 
wanting. Pagurinea. 
II. Abdomen bent under the thorax.- Body crab-like. Carapace firm all over. Fourth pair of 
legs like the third. Rostrum spiniform. Lithodinea. 
EXPLANATION OF PLATE XLVII. 
Fic. 1. Huenia proteus, male of triangular shape; a. whole animal, 5. part of the fine graving 
of the back, greatly magnified. 
Fie. 2. Huenia proteus, female. 
Fic. 3. Naxioides spinigera, male; a. whole animal, }. outside of hand, ¢. hooked hairs of two 
different shapes. 
Fic. 4. Halimus espinosus, male; a. whole animal, 6, outside of hand, c. end-joint of a walking leg, 
d. hooked hairs. 
Fie. 5. Lambrus (Rhinolambrus) turriger; a. whole animal, 6. part of under side to show grooves 
for breathing stream. 1. endopodite of 3rd maxilliped, 2. exopodite of the same, 3. base of 
epipodite of the same, covering opening to gill-chamber, 4. ridge on under side of body (not 
outer edge), 5. outer end of inner groove, 6. outer end of outer groove, 7. inner groove, 8. fore 
edge of mouth, 
Fic. 6. Lambrus (Aulacolambrus) sculptus; part of inner groove corresponding to (7) in fig. 5, 
showing the covering of hairs. 
