214 Mr. W. Warren on new 



prominences, and muscularity of body as in hispida. No 

 diverticula from digestive tract. In this form the nervous 

 structures are especially large and prominent. The ovaries 

 were short, though containing ova approaching maturity, 

 Germinal epithelium composed of a single row of higli 

 columnar cells, not a double row of cubical, as in the forms 

 like bipunctata. 



S. tenuis differs from hispida in size, in the prominence of 

 the nervous structures, in the relatively shorter caudal seg- 

 ment, and the absence of diverticula from the digestive tract. 

 It might seem that the specimens were young hispida, were 

 it not for the advanced ova and for the fact that diverticula 

 were not present, while in hispida they are very apparent as 

 early as twenty-four hours after hatching. 



7. Spadella draco. 



Among the /S. ^accec?a collected by Dr. Andrews at Bimini 

 was a single specimen of this species. The cosmopolitan 

 nature of certain of the Ch^tognaths is well illustrated by it. 

 Ill his article on " Les Chdtognathes de la Bale d'Amboine " 

 (Malay Archipelago), E. Beraneck says: — "La Spadella 

 draco est la plus commune des esp^ces de ce genre trouv^es 

 dans la p^che pdlagique de la bale d'Amboine." 



8. Spadella schizoptera. 



This very unusual species was described in the ' Circular ' 

 for June 1895. It is another of the forms from the Bahamas. 



9. Sagitta hispida. 



This form was described at the same time as the preceding. 

 We have found it in Jamaica, at Beaufort, North Carolina, 

 and at Bimini, in the Bahamas. Mr. A. Agassiz has found 

 it elsewhere in the Bahamas, in the cruise of the ' Wild Duck ' 

 in 1893. 



XXXIII. — New Species of VyYsX\di2S. &c.from the Khasia 

 Hills. By W. Warren, M.A., F.E.S. 



[Concluded from p. 177.] 



Orthocona, gen. nov. 



Fore wings elongate ; costa straight till shortly before apex ; 

 hind margin obliquelj curved. Hind wings in female narrow. 



