342 Ml". Butler on various genera of the 



angles decidedly more acute ; pronotum longer, more tapering, 

 with the apex usually slightly curved upwards. Length 17, 

 width at humeral angles 6 mm. 



Constancia (H. Clark). Type Brit. Mus. 



We have three examples of this species, one of which has the 

 apex of the pronotum straight. 



i> 



3. Ilehctica apicalis. 



Darnis apicalis, Fairm., Ann, Eut. Ser. 2, iv, p. 483, 23 

 (1846). 



Brazil. ;; 



A. Hehetica limacodcs. 



Darnis limacodes, Burm., Silb, Revue iv, p. 175, 12, pi. 3G, 

 figs. 13-16 (1836). 



Tejuca (H. Clark). Brit. Mus. 



CRYPTOPTERA, Stal. 



1. Gryptoptera olivacea. 



^Darnis olivacea, Fabr., Syst. Rhyn. p. 28, 8 (18U3). 

 Constancia (H. Clark). Brit. Mus. 



2. Cryptoiitera acutula. 



Darnis acutula, Fairm., Ann. Eut. Ser. 2, iv, p. 481, 13 

 a846). 



Brazil. Brit. Mus. 



3. Cryptoptera hrevis. 



'^ Darnis brevis, Fairm., Ann. Ent. Ser. 2, iv, p. 483, 18 

 (1846). 



Mexico (Salle). 



The gi-oups adopted above were characterized as sub-genera 

 of Darnis, but since Stal has given good distinctive structural 

 characters I prefer to regard them as genera. 



" DECTONURA, n. geu. 



Pronotum, Avhen vicAved laterally, similar to llehetiea : liut. 

 seen from above, with a central longitudinal carina gradually 



