342 MR. V. L. SCLATER ON CYANOMYIAS CCEI.ESTIS. [Apr. 4, 



terminal postabdominal segment is shorter than in C. subterrnnea, 

 not as long as its greatest width. Length about 3 inches 10 lines 

 ("98 mm.) ; of the larger chelipede, from the base of the raerus joint 

 to end of the dactylus, about 2 inches 10 lines (72 mm.). 



From the American 0. californiensis and C. uncinata, this species 

 is distinguished by the much longer palm of the larger chelipede, 

 and the much broader, less prominent, denticulated basal lobe of the 

 arm or merus, 



EXPLANATION OP PLATE XX. 



Fig. ] . Ka.ria (Naxioidcfi) rohiUardi (p. 339), adult male, reduced to about 



half natural size. 

 \n. Lateral view of the carapace of the same in oiitliue, showing the 



eleyatiou of the dorsal spines, reduced about half natural size. 

 \h. Aiiteinial, orbital, and buccal regions of the same, viewed from 



below, natural size. 

 Ic. Postabdomen of the same, natural size. 



April 4, 1882. 



Professor Flower, LL.D., F.R.S., President, in the Chair. 



Mr. Sclater exhibited what appeared to be an adult male example 

 of Cyanomyias ca'lestis (Sharpe, Cat. Birds, iv. p. 278), which 

 belonged to the Museum of Zurich, and had been sent to him for 

 determination by Dr. Moesch, of that city. Mr. Sclater remarked on 

 the more brilliant colours and finely developed crest of the male of 

 this species, which rendered it readily distinguishable from the 

 female example (figured by Lord Tweeddale, P. Z.S. 1878, pi. vii. 



Head of Cyanomyias calestis J. 



fig. 1), the only specimen hitherto known of this superb Fly- 

 catcher. The present example was received from Manilla, but was 

 probably originally from Dinagat, as the type specimen, now in the 

 collection of Mr. Wardlaw Ramsay, had been procured in that 

 island. Besides the highly developed crest and more l)rilliant 



