406 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [62] 



lor;g mesial edge armed with stout spines, spiiiules and seta.\ The 

 endognatli is small, narrow, obtuse at the tip, unsegmeuted, and not 

 longer than the mesial edge of the distal lobe of the protognath. The 

 distal one of the four lobes of the protognath of the second maxilla 

 (Fig. 4) is twice as broad as the nest, which is a little broader than 

 the two subequal proximal lobes. The endognath is much shorter than 

 the distal lobe of the protognath and tapered obliquely to a slender tip. 

 The anterior part of the scaphoguath is as long as the distal lobe of the 

 protognath, narrow, and obtuse at the tip, while the posterior part is 

 very short, broad, and obtusely rounded. 



The protopod of the maxilliped (Fig. 5) projects forward in a straight 

 lobe twice and a half as long as broad and rounded at the tij). The 

 endopod is composed of three very distinct segments: the proximal seg- 

 ment is a little less than half the entire length and with a small rounded 

 emargination at the distal end of the inner edge, which is ciliated and 

 armed just below the emargination with several curved spines; the mid- 

 dle segment is a little more than half as long as the proximal, narrower, 

 and reaches considerably by the protopod ; the distal segment is a little 

 shorter and slightly wider than the middle one, ovate, about three times 

 as long as broad, and ciliated along both edges. The exopod is unseg- 

 meuted, a little shorter than the endopod, narrow, obtuse at the tip, then, 

 membranaceous, ciliated along the edges, and folded longitudinally. 

 The lamelliform branchial epipod is as large as the protopod, the pos- 

 terior part a little the larger, and both extremities obtuse. The endo- 

 pod of the first gnathopod (Fig. 6) is short and stout : the merus is com- 

 pressed and a little more than three times as long as broad ; the three 

 distal segments are subequal in length and together about as long as 

 the merus ; the carpus is a little longer than broad ; the propudus a 

 little narrower than the carpus and much narrowed distally ; the 

 dactylus is slender, almost spiniform, and terminates in a very slender 

 spiniform and dorsally curved tip. The exopod is about two-thirds as 

 long as the merus, flagelliform, slender, and multiarticulate. The epipod 

 is about as long as the exopod, a third as long as broad, obtuse at the 

 tip, and bears a dense branchial pyramid about as long as itself. The 

 endopod of the second gnathopod is a little longer than the carapax 

 excluding the rostrum and reaches to about the tip of the antennal 

 scale: the ischium is approximately a third of the entire length; the 

 merus, carpus, and propodus sub( qual in length and each slightly less 

 than half as long as the ischium ; the dactylus is about two-thirds as. 

 long as the propodus and very slender. The exopod is very small, less 

 than half as long as in the first gnathopod. The epipod is slightly 

 larger than in the first and bears a little larger branchial pyramid. 



All the pemeopods bear minute exopods, all except the posterior pair 

 bear epipods, and all except the last two pairs bear branchial pyramids 

 like the second gnathopods. The three pairs of chelate perseopods are 

 similar, slender, not conspicuously comi)ressed, and decrease in length 



