2 Journal New York Entomological Society. (Voi. ix. 



The species of the genus Sinea vary much both in size and color. 

 In general they are somber colored and in cabinet specimens they vary 

 many shades, from light cinnamon to almost black. If a specimen is 

 killed soon after transformation the integument will not have become 

 fully hardened and as a result the color is liable to be pale. The width 

 of the abdomen varies considerably, especially in the female, where it 

 is often greatly distended with eggs. In short both size and coloration 

 are so variable as to be usually unreliable as specific characters. 



Sinea Amyot e^ Serville. 



Sinea Amyot et Servillk (pro parte), Hem., 1843, P- 375! Stal, .Stett. Ent. 



Zeit., XXII, 1861, pp 137, 139; ibid., XXIII, 1862, p. 443 ; Hem. Afric, 



III, 1865, p. 47 ; Enum. Hem., II, 1872, pp. 67, 70 ; Gi.ovER, MS. Notes 



from my Journ., 1876, p. Iio; Lrth. & Severin, Cat., Ill, 1896, p. I98 ; 



Champion, Biol. Cent. Amer. Rliync, II, 1899, p. 291. 



The genus Sinea, which, according to Glover, is from the Hebrew 



word "sene" meaning a prickly bush, was established in 1843 by 



Amyot and Serville. S. diadema Fab., is the type. The genus is 



recognized by the species having the anterior legs with a dorsal spine 



on the femora and spined below on both the femora and the tibiae. 



The species as now recognized may be separated by the following 

 table. Sinea spinipes and sanguisuga are connected by intermediate 

 forms and it seems questionable whether they should be considered 

 distinct. The extremes, however, are so obviously distinct that I have 

 thought it best to consider them as good species, especially as they are 

 so recognized by both Uhler and Champion. 



I Anterior protlioracic lobe armed on the disk with spines 2 



I. -J Anterior protlioracic lobe armed on the disk only with tubercles, sometimes 

 I acuminate but usually blunt 6 



{Posterior prothoracic lobe armed on the disk with sharp spines 3 

 Posterior prothoracic lobe unarmed on the disk 4 



Anterior femora with the terminal spine of the inner inferior row out of align- 

 ment, occupying rather a sub -dorsal position complexa Cauii. 



Anterior femora with the terminal spine of the inner inferior row not out of 

 alignment Integra Stal. 



["Gibbosities on the disk of the posterior prothoracic lobe surmounted by a small 

 tubercle. Sides of the female abdomen very prominently undulate. 



\ undulata Uk!. 



I Gibbosities on the disk of the posterior prothoracic lobe not surmounted by a 

 I small tubercle c 



