216 Gr. M. Giles — Six new Amphipods from the Bay of Bengal. [No. 2, 



articulation with the propodite flanked by a pair of minute flattened 

 hair-like bodies. The propodite is simple, slightly falciform, its poste- 

 rior border fringed with fine, short, stiff setae. It forms, in conjunction 

 with the prolonged postero-inferior angle of the carpopodite, a somewhat 

 incomplete subchelae. The meropodite and ischiopodite are short and 

 triangular, and the basipodite is stout and cylindrical, forming more 

 than a third of the length of the appendage. The 3rd thoracic append- 

 age, or 2nd gnathopod, is of generally similar form to the preceding, 

 but is longer and slighter, equalling a fourth of the whole body length. 

 The subchela, too, is even less perfect, the prolonged postero-inferior 

 angle of the carpopodite amounting to little more than a stout spine. 

 The 4th and 5th thoracic appendages, subequal and closely resembling 

 each other, just equal the combined head and thorax in length, the 

 anterior being slightly the longer and stouter. In both, the dactylopodite 

 is minute and claw-like, propodite and carpopodite subequal and 

 cylindrical, but stouter, and a third shorter than the two preceding 

 joints, the ischiopodite short and triangular, and the basipodite long, 

 cylindrical, swelling somewhat at its distal extremity, and forming 

 quite a third of the length of the whole limb. The 6th thoracic append- 

 age is by far the strongest of the series ; it is, however, considerably 

 shorter than 3rd and 4th, being as long only as the thorax. The 

 dactylopodite is represented by a mere rudimentary spine. The propodite 

 forms a stout curved claw which, in apposition with the inferior border 

 of the carpopodite, forms a powerful subchela. The carpopodite is 

 triangular, its inferior border being nearly as long as the lateral. The 

 antero-inferior angle is prolonged into a powerful spine, and the inferior 

 border is armed with three dentations, between which are a correspond- 

 ing number of small, isolated tufts of hairs. The meropodite and 

 ischiopodite are short and quadrangular, and the basipodite, forming 

 fully half the length of the limb, is stout, cylindrical, and strengthened 

 along its posterior border by a narrow buttress. The 7th and 8th thoracic 

 appendages are alike in plan, the former being, however, decidedly 

 the smaller, especially as to the basipodite, which is much longer and 

 stouter in the 8th appendage. In both, the dactylopodites are minute 

 and claw-like, the propodites of an elongated pyriform outline. The 

 carpo- and meropodites cylindrical, the ischiopodites short and triangu- 

 lar, and the basipodites spindle-shaped. 



Ahdomen narrow, tapering, depressed rather than compressed, 

 the first three segments long, diminishing from before backwards, the 

 first nearly equalling the long last thoracic segment in length, the third 

 being but half its length. The last three together only equal the 2nd in 

 length. 



