620 " THETIS " SCIENTIFIC RESULTS. 



second joint shows the largely developed gland, the secretion from 

 which no doubt issues through the straight finger for cementing 

 purposes, whether in lining the interior of the inhabited shell or 

 in attaching sand-grains to the shell's mouth. The fourth joint is 

 also much expanded, its widened distal end overlapping on both 

 sides the little fifth joint. In the third and fourth peraeopods 

 the second and fourth joints are less expanded than in the two 

 preceding pairs, and the fourth joint does not clasp the fifth. 

 The finger also is much smaller, and not straight, but curved back 

 upon the hand. The fifth pair are moi'e normal than the rest, 

 but the not very broadly expanded second joint is fringed on both 

 margins with plumose setse. The remainder of the limb is linear, 

 the sixth joint being the longest and notably curved, this and the 

 small bidentate finger not facing forward like the rest of the 

 limb, but backward, as shown in Kroyer's figure of S. typicus, 

 but not so figured or described by either Boeck or Sars for their 

 species. 



On the widely expanded peduncles of the pleopods there are 

 two very slender coupling spines, each armed on each side with 

 three backward-directed denticles. 



The uropods in situ, when the animal was withdrawn from the 

 shell, were closely folded upon one another below and behind the 

 telson, the i-ami of the first pair being at right angles to their 

 peduncles, which are not on the upper side very greatly longer 

 than the outer ramus. In the second pair the peduncles are much 

 shorter, but here as in the first pair they are produced below the 

 rami into a rounded lobe, which appears to be microscopically 

 serrate. The minute quadrate single ramus of the third uropods 

 carries two long setse and one or two short ones. The peduncle 

 is rather narrowly produced inwards, and has the remains or 

 traces of three or four setse. In the nearly allied Concholestes 

 dentalii, Giles, the peduncle is entirely bereft of rami. 



The telson is transversely oval, with a pair of minutely denticu- 

 late tracts on the distal margin. Length of dissected specimen 

 from front of head to end of peraeon, 3 mm. A female specimen, 

 containing two dark-brown eggs, was of similar dimensions, 

 except, as above mentioned, that the first antennae were relatively 

 rather longer ; on these and the second pair it retained traces of 

 orange and white bands. 



Localities. — Off Cape Three Points, 41 to 50 fathoms; and 

 Botany Bay, from a depth of 50 to 52 fathoms. 



Genus DRYOPOIDES, Stehbing. 



Dryopoides, Stebbing, Chall. Rep., Zool., xxix., 1888, p. 1145. 

 Dryopoides, Stebbing, Das Tierreich, xxi., 1906, p. 601. 



