1903.] NATURAL SCIENCES OF PHILADELPHIA. 445 



Northia macrobranchiata Mcintosh. 



This species was dredged by the "Albatross" south of Yedo, Japan, 

 on a bottom of green mud, in 345 fathoms. The species is evidently 

 quite common and widely distributed throughout Sagami and Suruga 

 Bays and the Totomi Sea in depths from 31 fathoms at station 3,703 

 to 749 fathoms at 3,696. A few specimens occur in the collections 

 from each of the following additional stations, 3,704, 3,707, 3,715, and 

 3,740. At 3,696 a number of the peculiar tubes of this species were 

 procured. It is surprising to find them covered at a depth of 749 

 fathoms with bits of wood, pine twigs and needles, leaves, straw, jtc. 

 The only entire specimen in the collection comes from station 3,704, 

 and permits the description of the posterior end, hitherto unknown. 

 The branchiffi continue to the 2d preanal somite, on which they still 

 equal the foot in length, are quite thick, and bear the notopodial 

 cirrus as a minute process, of not more than i their diameter, on the 

 external side of their base. Anal cirri 2, very delicate and slender, 

 equalling the length of the last 7 somites. 

 Northia geophiliformis sp. nov. (PI. XXV, figs. 57, 58, 59.) 



Upon a cursory examination this species presents a striking general 

 resemblance to Geophilus or other slender Chilopod, a similarity which 

 is enhanced by the regular alternation of reddish-bro^Ti and pale bands 

 across the dorsum. 



The form is slender, elongated, shghtly depressed and hnear, but just 

 perceptibly tapering from the anterior fourth posteriorly, the hinder 

 body region becoming at the same time more rounded. None of the 

 numerous specimens is complete, more or less of the caudal end being 

 deficient in each case, but a separate caudal end of 44 somites was found. 

 The type specimen has a length of 5.7 mm. for the anterior 109 somites 

 and a maximum width between the tips of the anterior parapodia of 



2 mm. 



Prostomium small, narrow, inconspicuous, scarcely more than a 

 common meeting place for its conspicuous appendages, and closely 

 united with the peristomium. No trace of eyes can be detected. 

 Frontal tentacles prominent, rather slender, fully as long as prosto- 

 mium, ovate-oblong in outline, but circular in section, attached by 

 contiguous constricted bases and strongly divergent. Palpi also prom- 

 inent, about twice the size of frontal tentacles and projecting almost 

 horizontally outward from sides of dorsum of mouth. Dorsal append- 

 ages of prostomium large and conspicuous with remarkably long amui- 

 kted basal pieces, and, except' the outer lateral, long, slender, whip- 

 like styles, which are very fragile and usually detached or injured; 



