498 STALK-EYED CRUSTACEA 



are usually pediform. The posterior legs may be absent. 

 The abdominal appendages may be very small. The head 

 and chest are more or less in segments. 



Family Squillidae. 



Squillidcu . . . Dana, Miers, Brooks. 

 Sqiiilliens . . . H. Milne Edwards. 



The abdomen is larger than the cephalo-thorax, the 

 gills being attached to its under surface ; its last joint and 

 the appendages of the joint next it are greatly developed. 

 The carapace is more or less quadrilateral, with two 

 longitudinal grooves above, leaving exposed the two 

 first segments of the head and several segments of the 

 body. Frontal plate mobile, separated by a suture 

 from the carapace. Internal antennre have three 

 flagella. External antenna; short, bearing a large oval 

 scale. Second pair of maxillipedes large, prehensile, 

 with the inferior margin of the last two joints usually 

 armed with spines. Three first pairs of thoracic legs 

 shorter, prehensile, applied to the buccal cavity, with 

 their last joint but one expanded ; the succeeding pairs 

 slender. 



Range. — Most seas. 



Members of this family are found in shallow water, 

 sometimes under stones and in holes in the sand when 

 the tide is out. In shape they call to mind the insect 

 called " Mantis " or " God Horse." The definition of the 

 order and family is taken from Mr. Miers' " Crustacea of 

 New Zealand," the synopsis of the genera from Mr. Brooks' 

 "Challenger Report" on the Order. The latter naturalist 

 states that the young are found on the surface of the 

 sea. 



