in the Fish Gallery of the Indian Museum. 63 



which six species are found in the seas of India between 

 100 and 1700 fathoms. The head and body of all are 

 covered with small scales. 



Genus 4. Dicrolene. Also a deep-sea genus, differ- 

 ing from Neobythites only in having some of the lower 

 rays of the pectoral fin isolated and greatly prolonged 

 to form organs of touch something like those of the 

 Topsi fish. Three Indian species are known, of which 

 one, Dicrolene intronigra, also occurs off the West Indies 

 and neighbouring American coasts and off the Atlantic 

 coasts of north-west Africa. 



Genus 5. Bassozetus. Another deep-sea genus, differ- 

 ing from Neobythites chiefly in being- more eel-like in 

 appearance. The only Indian species comes from the 

 Bay of Bengal in 1310 fathoms of water. 



Genus 6. Dermatorus. Another deep-sea form, differ- 

 ing from Bassozetus chiefly in having the bones of the 

 head armed with spines. Three Indian species are 

 known from depths between 900 and 1800 fathoms. 



Genus 7. Glyptophidium. Two species belong to the 

 Indian fauna, living at depths between 150 and 400 

 fathoms. In both, the bones of the head are curiously 

 crested and frilled. 



Genus 8. Lamprogrammus. In this curious form there 

 are no ventral fins and the scales of the lateral line are 

 much enlarged, — each scale also carrying a gland that 

 probably secretes light. Two species are known and 

 they have only been found between 400 and 700 fathoms. 



Genus 9. Tauredophidium. This is a true deep-sea 

 form of which only one species is known, occurring in 

 the Bay of Bengal at a depth of 1310 fathoms. It has 

 no eyes, and the bones of the gill-covers are armed with 

 enormous spines which can be erected in defence. 



Genus 10. Diplacanthopoma. Also a member of the 



