Mr. W. C. Hewitson on new Species of Hesperidse. 449 



and other caudal appendages, all establish generic agreement 

 between Cratip-pus and Exungma, there are still some points 

 of difference available for specific distinction, even allowing 

 for a reasonable probability of error as to the finger of the 

 first gnathopods of Cratipijus tenuipes. For instance, the hand 

 is said to be three or four times as long as the wrist, whereas 

 in Cratijj'pus [Exunguia) stilipes the Avrist is rather longer than 

 the hand ; the penultimate joint in the last three pairs of perei- 

 opoda is described as serrated on the inner margin, while in 

 Mr. Norman's species, or at any rate in my specimens of it, 

 that margin is perfectly even but for one very minute spine at 

 about the centre. The eyes are spoken of as round and black ; 

 but the colour of the eyes in a dead specimen cannot be de- 

 pended on. 



EXPLANATION OF THE PLATES. 



Plate XIX. 



Fig. \. Amphilochus concinna. 1 a, first gnathopod; 1 5, second gnathopod. 

 Fig. 2. Danaia duhia. 2 a, first gnathopod ; 2 b, second gnathopod j 

 2 c, pleon. 



Plate XX. 



Fig. 3. Cnlli7nerus acudigitata. 3 a, first gnathopod ; 3 b, second gna- 

 thopod. 



Fig. 4. Cratippus {Exunguia) stiUpes. 4 a, first gnathopod ; 4 b, second 

 gnathopod ; 4 c, underside of antennae and head ; 4 d, maxilliped ; 

 4 e, underside of pleon. 



XL VI. — Descriptions of twenty -Jive new Species o/" Hesperidae 

 from Ms own Collection. By W. C, Hewitson. 



Hesperia Cylinda. 



Alls utrinque rufo-fuscis : anticis punctis octo, posticis uno, hyalinis : 

 posticis infra fasciis tribus punctisque duobus griseis, 



Upperside dark brown, paler at the margins of the anterior 

 wing. Anterior wing with eight transparent spots — three at 

 tlie middle, one near the inner margin, three near the apex, 

 and one below these. Posterior wing with one small tri- 

 angular transparent spot. 



Underside. Anterior wing as above, except that there is a 

 pale spot on the middle of the costal margin, a fifth spot near 

 the apex, and an undulate arcuate submarginal band of grey. 

 Posterior wing dark brown, with the nervures, a spot before 

 the middle, a band below this, and a submarginal band of 



