TROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 441 



and appears to have been more common than P. Montagui, which occur- 

 red with the leptocerus in 30 and 45 fathoms, and alone in 28 fathoms.* 



Pandalus teuuipes, sp. uov. 



This species is smaller but has a proportionally thicker body than P 

 Montagui, and the surface of the carapax and abdomen are very mi- 

 nutely roughened, somewhat as in the last species, but the punctata 

 ridges are much less conspicuous and much more thickly crowded than 

 in that species. 



The carapax, including the rostrum, is about two-fifths of the entire 

 length, and the carapax proper is nearly as long as the rostrum, slightly 

 swollen in the middle, somewhat contracted in front, as seen from above, 

 and with the rostral carina extending back to about the middle, and 

 armed, at about a third of the way from the front, with two to four 

 slender teeth, crowded close together and rapidly decreasing in size 

 posteriorly ; but between these teeth and the posterior tooth of the ros- 

 trum the carina is wholly unarmed. The rostrum is curved upward a 

 little more than in P. Montagui, is not expanded below, and is armed 

 the whole length above with eight to ten teeth, which are usually more 

 widely separated distally, though in some specimens the terminal two 

 or three are crowded together near the tip ; beneath there are six to ten 

 small teeth. 



The eyes are black and as broad as long, but shorter than in P. Montagui. 

 The peduncle of the antennula reaches to near the middle of the antennal 

 scale, and the two distal segments are subequal in length and each about 

 as broad as long. The antennular flagella are subequal in length and 

 much longer than the carapax, including the rostrum ; the proximal 

 half of the outer flagellum is very much thickened, the terminal por- 

 tion very slender, as is the inner ilagellum throughout. The antennal 

 scale is approximately four-fifths as long as the rostrum, and of very 

 nearly the same form as in P. Montagui. The external maxillipeds arc 

 very slender, reach to about the tip of the rostrum, and have well-de- 

 veloped exopods, fully half as long as the ischium ; the ischium is a 

 little longer than the rest of the endopod, which is composed, as in P. 

 Montagui, of only two distinct segments beyond the ischium, and in 

 this case these two segments are subequal in length. 



The first pair of legs are very slender and reach to the tips of the ex- 

 ternal maxillipeds. The second (chelate) legs are exactly alike, and 

 reach to or considerably by the tips of the antennal scales. The ischium 

 is a little longer than the merus ; the carpus a little less than twice as 

 long as the merus, slightly shorter than the antennal scale, and com- 

 posed of about fifteen segments, of which the proximal are separated by 



*In the report on the dredgiugs in the region of George's Banks (Smith and Har- 

 ger, Trans. Conn. Acad., iii, pp. 1-57, pis. 1-8, 1874), "Fandaltts minulicornis" is re- 

 ported from the following stations : b, 30 fathoms ; c, 28 fathoms ; d, 50 fathoms ; e, 

 60 fathoms; g, 4o0 fathoms; and q, 45 fathoms; hut on re-examining the specimens I 

 find all those preserved from b, e, and g are P. leptocerus, the single specimen from c 

 is P. Montagui, while from d and q there are specimens of hoth siiecies. 



