344 Records of the Indian Museum. [VoL. VII, 
and not distinct species or varieties. Incidentally it is interesting 
to note that in the female we get a fusion of the abdominal 
segments taking place, whereas in the male we have the exact 
reverse, the segments gradually increasing in number owing to 
division taking place. 
Genus Pontella, G. Brady. 
Pontella andersoni, sp. nov. 
Pl. xx, figs. r—6. 
Numerous examples of both males and females were obtained ; 
they differ from all previously described species, and I have given 
them the above name after Lt.-Col. A. R. S. Anderson, who was for 
many years Surgeon-Naturalist and is now Civil Surgeon at Chit- 
tagong, where the specimens were obtained. 
@ Total length 3°34 mm. 
The head and ist thoracic segment are separate, as are also 
the 4th and 5th thoracic segments. The posterior thoracic margin 
terminates in a sharp lateral spine. The forehead is rounded 
anteriorly and terminates in a strong bifid rostrum. There are 
no rostral lenses present. The back of the head is crossed by a 
strongly marked groove. Side hooks are present. 
The abdomen consists of two segments, the 2nd of which is 
small and terminates in symmetrical furca. The 2nd pair of furcal 
setae are much longer than the others, about twice the length. 
The relative lengths of the segments and furca are 20: 6: 11. The 
1st segment is barrrel-shaped and quite symmetrical. 
The 1st antennae do not reach to the end of the thorax. The 
segments have the following proportional lengths :— 
Segments— 
T. 2oo3e4: 5: 6. 7. 8. 9g 10. 11-12. 13. 14.15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 
50. 38. 11.9. 13. 14. 12. 12. 20.14. 39. 24.28. 32.41. 37. 43. 45. 34. 31. 32. 23. 28. 
The 11th and 12th segments are partially fused and the pos- 
terior border of the proximal segments is fringed with hair. 
The 2nd antennae, mandibles, and maxillae are of the usual 
type. The maxillipeds show the usual seven joints and the 2nd 
joint is armed with a row of spines down the margin. 
The 1st pair of legs has the usual 3-jointed exopodite and 
endopodite, and the whole of the external margin of the former is 
fringed with hair. ‘The spine on exopod 2 is long, reaching well 
beyond the base of the Ist spine on exopod 3. The terminal saw 
is longer than the combined lengths of the two end segments of 
the exopodite. 
The 2nd—ath pairs of legs are as usual. 
The 5th pair of legs consists of a single jointed exopodite and 
endopodite, the former being about twice the length of the latter. 
The exopodite bears five spines, a single one near the middle of 
the outer border and four close together at the distal end. The 
