March, igoi.] Caudell : The Genus Sinea OF A.yvoT &= Seri'ille. 11 



This species is somewhat allied to sangiiisiiga and related forms, 

 but the short anteocular spines will serve to distinguish it from all ex- 

 cept defecta, in which case the characters given in the table will serve 

 to distinguish it. It was described from California and there are 

 specimens in the National Museum from Texas and Arizona. There 

 is also a single specimen labelled ' ' North Carolina. ' ' This seems quite 

 out of its ordinary range and the specimen may be wrongly labelled. 



The antennae of this species are obscurely ringed with pale bands 

 on the first segment, in some cases scarcely visible. 



Sinea defecta Stdl. 



(Plate I, Fig. 9.) 



Sinea defecta Stal, Stett. Ent. Zeit., XXIII, 1862, p. 445 ; Enura. Hemip., II, 1872, 



p. 71 ; Walker, Cat. Hemip. Heter. Brit. Mus., VIII, 1873, pp. 139, 140; 



Uhler, Check List Hemip., 1886, p. 23 ; Leth. & Severin, Cat. Hemip., Ill, 



1896, p. 198 ; Champion, Biol. Cent. Amer. Rhync., II, 1899, p. 295. 



Length, II-13.5 mm. Head and thorax as in rileyi. Abdomen entire, seg- 

 ment four without a pale fascia. The fourth and basal half of segments live and six 

 of the abdomen usually darker than the rest of the body, generally more constant in 

 the females. Abdomen of the male with the apical angle of the fourth segment 

 slightly prominent or subangidate. Membrane of the hemelytra without a longitudinal 

 dusky mark. 



Habitat: Mexico and Central America. Type, Museum Holm. 



This species resembles spinipes in coloration, size and form but is 

 at once distinguished from it, as well as from all others, by having 

 only very short blunt spines or tubercles on the anterior part of the 

 head. This character is shown at figure 9 on plate I. 



EXPLANATION OF PLATE I. 



Fig. I. Sinea diadema Fab. Fig. 6. Sinea raptoria Stal. 



Fig. 2. " coronata Stal. 

 Fig. 3. " complexa Caud. 

 Fig. 4. ' ' integra S TAL. 

 Fig. 5. " caitdata Champ. 



EXPLANATION OF PLATE II. 



Fig. I. Acholla mtdtispinosa Dec. 9- (Tip of abdomen, ventral view.) 

 Fig. 2. " " "9- (Tip of abdomen, apical view. ) 



Fig. 3. Sinea diadema Fab. (Hemielytron. ) 

 Fig. 4. " " " (Wing.) 



Fig. 5. " " " (Fore leg.) 



Fig. 6. " " " (Claw.) 



Fig. 7. Acholla multispinosa Dec. $ . (Tip of abdomen, ventral view.) 

 Fig. 8. " " " (? ■ (Tip of abdomen, apical view. ) 



