218 



ENDEAVOUR SCIENTIFIC RESULTS. 



at the base of the outer keels. (2) Funnel : — \'entral aspect 

 of funnel with two broad bands of closely-placed organs, 3-4 

 deep near the middle, flanked by a smaller, narrower band or 

 patch at each side. (3) Mantle : — Entire ventral aspect of 

 mantle covered with numerous, thickly scattered photophores, 

 more so in some regions than others, but evincing slight traces 



Fig. 4. — Enoploteiithis galaxias $ [462], two rows of 

 teeth from radula of paratype ; camera drawing from 

 a mount in balsam. 



of any aggregation into definite longitudinal stripes or bands, 

 like those of the head and funnel ; such traces best visible in 

 the anterior region, but accompanied by an even stronger 

 effect of an irregular transverse banding, so that in general the 

 pattern here is best described as roughly checkered or reticu- 

 late ; even this appearance being lost posteriorly ; of the 

 longitudinal bands the two median easiest to make out and 

 traceable farthest back ; the delicate posterior prolongation 

 of the body adorned with comparatively few photophores, a 

 line of the organs being evident down each side ventrally for 

 about two-thirds of the distance to the tip, and two medio- 

 ventral lines for about one -third the distance ; the two latter 

 series, with a space between them clear of photophores, trace- 

 able for a short distance forward on the body proper, soon 

 losing themselves ; dorsal region of mantle with a few scat- 

 tered photophores ; all the photophores, dorsal and ventral, 

 unusually inconspicuous and little differentiated by their 

 colour, though the fact that they usually form low tubercles 

 helps to distinguish them ; apparently divisible into at least 

 two principal sizes, those of one type being very small. (B.) 

 JSubocnlar photophores (PI. Ix., fig. 6), 9 in number, occurring 

 in a single, close ranked series on the ventral periphery of each 

 eyeball ; sufficient magnification showing them to be not 

 exactly in line with one another, but zigzag and strongly 

 polymoi'phic, the degree to which this appearance may be due 

 to their different orientation in the encompassing tissues 

 being somewhat uncertain ; terminal organs largest, both 

 characterised by their strongly fibroid structure with very 



