Prof. J. Wood-Mason on the Genus Chceradodis. 161 



2. Ghoeradodis rhombicollis. 



Mantis rhombicollis, Latr. in Voy. de Humboldt, Zool. Ins. p. 103 



pi. 89. figs. 2, 3, rf. 

 Chceradodis peruviana, Serville, Hist. Nat. des Orthopt. 1839, p. 207, <$ . 

 Chceradodis strumaria, StSl, Syst. Mant. 1877, p. 15, $ § • 



The blotch commences, in both sexes, near the base of the 

 femur, extends through the ungual groove nearly to the middle 

 of the joint, and is there succeeded by a marginal row of black 

 points in contact with the bases of alternate spines. 



Hab. $ $ , Guayaquil, in the collection of the British 

 Museum ; nymph, Santa Fe de Bogota, in the collection of 

 the Indian Museum, Calcutta; New Granada (<J ? , Stal). 



3. Chceradodis Servillei, n. sp. 



? . Closely allied to the preceding, from which it differs 

 in having the marginal field of the tegmina proportionally 

 narrower, and in the smaller size, as well as in the different 

 shape, of the femoral blotch, which is small and oval, com- 

 mences just beyond the ungual groove, and is followed by a 

 marginal row of small black points. 



Hab. 2 ? , Cache, Costa Bica, in the collection of Messrs. 

 Godman and Salvin ; nymph, Chiriqui, in the collection of 

 the Indian Museum, Calcutta. 



In the females of the next two species, and, in all proba- 

 bility, in that of G. rhomboidea also, the posterior angles of 

 the pronotal lamellse are rounded angulate and produced back- 

 wards, so that the hinder end of the primitive pronotum pro- 

 jects in the bottom of an angular emargination. 



4. Ghoeradodis laticollis. 



Chceradodis laticollis, Serville, Revue, p. 24 ; Hist. Nat. des Orthopt. 



1839, p. 208, pi. iv. fig. 2, § ; Saussure, Mantes Americ. p. 20, $> . 

 Chceradodis strumaria, id. ib. p 18, <J . 

 Chceradodis laticollis, StSl, Syst. Mant. 1877, p. 17, $ . 



The blotch is situated, in both sexes, just beyond the ungual 

 groove, is oblong-rhomboidal in shape, and is followed by 

 two black points on the bases of alternate spines ; there is a 

 fuscous speck at the end of the stigmatal spot of the tegmina ; 

 and the antero-lateral margins of the pronotal lamellae are 

 arcuate or convex, especially in the female. 



Hab. 5 <£, 5 $, Ecuador (Buckley), in the collection of 

 the Indian Museum, Calcutta ; Peru ( 5 , Stal) ; Cayenne 

 ($, Serville et Stal) ; Surinam (cf, Saussure). 



