PUNNETT AND FOKSTER COOPER — NEMERTEANS. 5 



4. Drepanophorus indicus, sp. n. (Plate 2. figs. 13 a, 13 5, 13 c.) 



Locality. Salomon, Chagos. A single specimen of this small species measuring 

 31 X 4 vam. The large proboscis was extruded. 



Colour, when preserved in formalin, white without any trace of markings, though 

 anteriorly there is a faintly pigmented appearance. Prom the medium used for 

 preservation it may be inferred that the specimen was colourless, or nearly so, in life. 



The chief diagnostic features of this species are the following : — 9-10 pairs of eyes are 

 present. There are 16 proboscis-nerves. The cerebral organ lies by the side of the 

 brain and reaches posteriorly beyond it ; characteristic of this organ is a well-marked 

 glandular extension which extends backwards for some considerable way just dorsal 

 to the nerve-cord; this extension is not so long as that found in D. cerinus, and 

 resembles more the condition found in D. willeyanws. The opening of the cerebral organ 

 is lateral (PI. 2. fig. 13 a), the excretory pores are on the ventral surface close behind 

 the brain. 



The specimen is female, but immature, and no ducts are developed. The species has 

 affinities with D. cerinus and D. willeyanus. From the former it differs in that the 

 cerebral organ is not entirely behind the brain ; in the number of proboscis-nerves, 

 16 in this species against 14 in D. cerinus; and in the shorter glandular appendage to 

 the cerebral organ. Prom the latter it differs in the absence of the chocolate markings 

 which characterise that species as well as in the more anterior situation of the cerebral 

 organ ; the intestinal region also in the present species is considerably more flattened 

 than in J), tcilleyanus and the gut-diverticula are deeper. 



5. Drepanophorus sp. 



Locality. British East Africa. 



Incomplete fragments of moderate size are referable possibly to D. latus or some 

 closely allied form. 



Numerous eyes ( > 30) are present, arranged in two groups on each side. The cerebral 

 organ is lateral and reaches a few sections only behind the brain. The proboscis as well 

 as the entire epithelium is missing. 



Another specimen from the Seychelles, 37 fathoms, 18-5 mm. in length and 4 mm. in 

 breadth, agrees in general features, as far as can be observed, with the above. It likewise 

 lacked proboscis and epithelium. 



6. Baseodiscus insignis, sp. n. (Plate 1. figs, la, lb.) 

 Locality. Zanzibar, from muddy shore at low tide (Orossland Coll.). 



A single specimen, 320 mm. long and 6'5 mm. broad. The extruded proboscis was 

 2 mm. in breadth. 



The epithelium has been macerated off, rendering the pigmented pattern in the cutis 

 very distinct. This pattern consists of a series of close longitudinal chocolate-brown 

 stripes on the dorsal surface, the stripes on the ventral surface being further apart and 

 rather broken up. There is a well-marked circular head-furrow. 



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