'8 ME. E. S. GOODEICH ON A COLLECTION OF 



The hectocotylized arm of the male is strongly modified. On its proximal half are 

 two rows of small suckers (fig. 22) ; on the outside of these the upper edge of the arm 

 is drawn out into a wide thick flap (fig. 22, Ji.). On the distal half of the arm the 

 suckers are reduced to rounded projections {m.s. fig. 23) which bend over a groove. 

 The outer and upper edge of the arm is developed into a lateral membrane of considerable 

 width {l.m. fig. 23). 



LoLiOLrs iNVESTiGATOKis, n. sp. (PI. 2. figs. 29, 30, 31, 32, 33, 34, 35, 36, & 37.) 

 Nine specimens, some of which are much mutilated. The specimen figured and one 

 other come from the Mutlah River, five from the Ye River, one from Mergui, and one 

 from Sangor. They vary considerably in size ; the following are the principal 

 measurements taken on the specimen figiu'ed, a male of average size : — 



Lengtli of mantle (upper surface) .... 



„ from apex of mantle to base of arms 



Breadth of mantle near edge 



„ across eyes .... 

 „ „ combined fins 



Length of attachment of fins 

 „ dorsal arm 



dorso-latcral arm 

 ventro-lateral „ 

 ventral „ 



tentacular „ 





The mantle is of conical shape, with a roimded apex ; its margin projects on the upper 

 surface into a small point above the neck, and below on either side of the funnel (figs. 29 

 & 30). The fins have rounded anterior and lateral edges ; the two together form a 

 heart-like figure. They join and are continued beyond the mantle apex. 



The head is large and provided with a transverse olfactory crest below the eye. The 

 siphon possesses a valve, and muscular bridles hidden below the skin. 



The three dorsal pairs of arms bear on their outer sui'face a median keel, especially 

 well-developed on the 3rd pair. The ventral arms are somewhat square in section, and 

 both the outer edges are drawn out into lateral keels. Small lateral membranes spring 

 from the inner surface on the ujiperside of the 1st and 2nd pairs of arms, and on both 

 sides of the 3rd and 4th pairs of arms. The suckers, in two rows, are obliquely set on 

 their stalks (fig. 36) ; the horny ring is provided with three large blunt teeth (fig. 37). 



The tentacular arms enlarge distally into small c]u.bs, bearing an outer keel and four 

 rows of suckers. The horny ring of these is armed with sharp teeth on its distal border 

 (fig. 35). 



A few small suckers are situated on the seven lobes of the buccal membrane ; their 

 horny ring strongly resembles that of the tentacular suckers, but there are only from 

 four to six large teeth. 



The mandibles are rather weak (fig. 34). The lower mandible has a sharp, hard, 

 tooth-like point and a small basal tooth (b.t. fig. 34 b). 



