308 ATTSTBAIJAH' malacostbaca. 



compressed, tlie 'merus triangular, with its distal border transverse, 

 with, a strong seta at each distal angle, and a few fine hairs ; 

 carpus smaller, with its distal border oblique, a strong seta at its 

 supero-distal angle ; propodos narrower than the carpus but 

 longer, its distal border short, transverse, a strong spine on either 

 side of the point of insertion of the dactylos ; rather compressed, 

 slightly hooked at the end. Second pair of thoracic limbs with 

 the basos very broad, a small tooth on its posterior border ; a 

 tooth on the lower border of the merus ; carpus triangular, 

 elongate; propodos dilated, its digital prolongation with a 

 rounded lobe near the base. Length about £ in. 



Broughton Islands, dredged in about twenty- five fathoms. 



Sub-Family Stenetrinw. 



Body dorso-ventrally compressed, of nearly equal breadth 

 throughout. Caudal appendages short, the rami not multi- 

 articulate. 



Genus Steneteium, Haswell. 



Body dorso-ventrally compressed ; abdomen short, one-jointed. 

 Head with a short rostrum. Antennae inserted on the anterior 

 margin of the head ; internal pair very short ; external pair very 

 long, both with well-developed flagella, and with a small one- 

 jointed basal appendage. Mandibles provided with a palp. 

 Maxillipedes expanded, operculif orm. First pair of thoracic 

 limbs with a large prehensile manus ; following pairs ambulatory. 

 Eirst pair of abdominal appendages broad, operculif orm. Caudal 

 appendages biramous, inserted on the border of the shield-like 

 abdomen near the extremity. 



530. Stenetrium arxnatum. 



Stenetrium armatum, Haswell, 1. c, p. 479, pi. xix., fig. 1. 



Cephalon armed on either side with a prominent dorso-ventrally 

 compressed, acute spine, curved outwards and forwards. Antero- 

 lateral angles of the first thoracic segment produced forwards, 

 acute ; those of the second segment slightly produced ; postero- 

 lateral angle of the penultimate segment slightly produced 

 backwards. Penultimate segment of the abdomen rudimentary ; 

 second as long as the three last thoracic segments, its lateral 



