PSAMMOLYCE. 187 



and -malaj/ana] the first pair of elytra are strongly elon- 

 gated, giving to the head a snout-like appearance. More- 

 over the structure of the neuropodial setae affords good 

 material for the discremination of the species, as f. i. Ps. 

 flava •) is easily recognized by this single character, and 

 also the appearance of the dorsal cirrus of the third seg- 

 ment may be different in some of the species. Unfortun- 

 ately the earlier naturalists have not always described these 

 different cliaracters with sufficient conciseness. 



Psammolyce zeylanica Willey. 



Siboga-expedition, Stat. 43, anchorage of Pulu Sarassa 

 (Postilion-islands); Stat. 49a, Sapeh-strait ; Stat. 133, an- 

 chorage off Lirung, Salibabu-island ; Stat. 313, anchorage 

 east of Dangar besar, Saleh-bay; Stat. Ambon, reef; Stat. 

 Banda. 



At the above-named Stations individuals of a Psammolyce- 

 species were met with, that belong to the group of Ps. 

 arenosa D. Ch. and in many regards agree with Willey's 

 description of Ps. zeylanica^ though some slight differences 

 could be stated. The largest specimen (of Stat. Ambon) 

 measures about 100 mm. in length and its greatest breadth 

 (with bristles) amounts to 12 mm. The ventral side of the 

 body usually is hairy, though not more conspicuously in 

 the vicinity of the mouth, as f. i. is to be seen in Ps. 

 malaymia (see later on) ; even in the specimens of Stat. 

 Banda the anterior region of the venter shows so few fili- 

 form papillae, except at the base of the parapodia, that in 

 this point they more resemble Ps. rigida Gr. (Willey, loc. 

 cit. p. 256). 



Examined with high power the venter appears to be 

 coated with long, pointed, somewhat spinous processes, 

 that are dilated at the base, whereas small globular tu- 

 bercles are situated between them. The first pair of elytra 

 is elongated, rounded triangular, with the internal border 



1) Kinberg, Annulata, Kgl. Svenska Freg. Eugeaies resa, pi. IX, fig. 44. 

 Notes from the Leyden IMuseum, Vol. XXXV. 



