AMERICAN ORTHOPTERA. 283 



Leuco]>ha*a ma<Ier% (Fahricius). 



1792, [Dlatta] miiflerse Fahricius. Ent. Syst., ii, p. 6. [Madeira.] 



Two immature females; Guanajay, Pinar del Rio, Cuba. May 5. 



(Palmer and Riley.) [U. S. N. M.] 



Genus PELLOBLATTA n. gen. 



Allied to Leucophcea (Rhijparobui Krauss) and Pycnoscelus 



(Leitcophcea auct.). From the former it differs in the form of the 

 tegmina and pronotum (which approach Pyowsce/us), the great 

 interspace between the eves, the spine arrangement and the shorter 

 limbs. From the latter it differs in the more distinct venation of 

 the tegmina, the different character of the head, and the divided 

 supra-anal plate. 



Pelloblal la lata n. sp. 



Type: 9; San Carlos, Costa Rica. (Schild and Burgdorf.) 

 [Cat. No. 6941, U. S. N. M.] 



Size rather small ; form ovate ; surface of the pronotum polished. Head with 

 the interspace hetween the eyes about equal to that betweeu the ocelli; eyes 

 elongate reniform, centrally compressed ; vertex and lower surface of head glab- 

 rous. Pronotum transverse heptagonal * ; anterior margin truncate, posterior 

 angle broadly obtuse, the posterior lateral faces very short, the anterior lateral 

 faces as long as the true posterior faces ; angles all rounded, the lateral antero- 

 posterior angle the most prominent; lateral portion considerably depressed. Teg- 

 mina bluntly ovate, rather broad, venation very distinct, apex rotundato-truncate ; 

 basal field moderately wide, reaching to the middle of the tegmen ; discoidal vein 

 running comparatively close to the costal margin, sending off about ten distinct 

 costal veins; the ulnar vein, closely following the trend of the anal sulcus, sends 

 off ahout eight parallel rami toward the apex of the tegmen ; anal sulcus arcuate ; 

 diagonal vein very deeply and widely impressed. Wings with the apex broadly 

 rounded; costal veins ten in number; ulnar vein bearing eight complete and 

 two incomplete rami. Abdomen with the lateral margins of the dorsal segments 

 slightly produced posteriorly. Supra-anal plate broadly rounded, apex triangu- 

 larly emarginate. C'erci basally very broad, acuminate, slightly depressed, not 

 equalling the supra-anal plate in length. Subgenital plate very broad, the cereal 

 emargination slight, apex with a very shallow and broad emargination. Limbs 

 moderately robust; arolia rather small. 



General color sienna. Eyes blackish brown. Tegmina umber, completely 

 edged with, and lined on the anal sulcus with the general tint. Wings with the 

 costal margin and the apical portion of the anterior field suffused with umber. 

 Measurements : 



Length of body, ...... 12. mm. 



Length of pronotum, ..... 4.5 '' 



Greatest width of pronotum, .... 5.5 " 



Length of tegmina, ...... 9.5 " 



Greatest width of tegmina, .... 4.7 "• 



* This type is the usual form in this sub-family. 



TRANS. AM. ENT. SOC. XXIX. SEPTEMBER. 1903. 



