74 



SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 1 37 



tures (pss) are well marked on it. The coxal cavities of the meso- 

 thoracic legs are situated well on the pleural side of the metathorax, 

 instead of being in the more sternal position shown in Dissosteira 

 (Snodgrass, 1929), Nomadacris (Albrecht, 1956), or Dociostaurus 

 (Jannone, 1939). 



Ba WP2 Sa Ba VJ?:^ Sa 



\\ \ ; \ \ I I A^^O 



\\ \ I I \ I / / 



Cx2 Tr2 ^m2 S3 Tn 



Fig. 8. — The pterothoracic pleura of Marellia remipes. 



AbSI, first abdominal sternum ; Ba, basalar sclerite ; Cx, coxa ; Epm, epimeron ; 

 Eps, episternum ; Fniz, base of hind femur ; PIS, pleural suture ; PNs, lateral arm 

 of metathoracic postnotum; Ppct, prepectus; pss, pleurosternal suture; S, tho- 

 racic sternum ; Sa, subalare ; Sp2, mesothoracic spiracle ; Spa, metathoracic 

 spiracle; Tn, trochantin; Tr, trochanter; IV P, pleural wing process. 



The metathoracic sternum shows the broad metasternal lobes nearly 

 meeting along the midline, the only visible part of the precostal region 

 of the first abdominal sternum being a rhombus-shaped area between 

 the roots of the sternal apophyses {sa). This area is limited anteriorly 

 by the furcal suture {fs) and united to the rest of the first abdominal 

 sternum by a very narrow band between the metasternal lobes. The 

 infracoxal lobes of the metasternum that appear well limited by su- 

 tures in the three species mentioned in the preceding paragraph are 

 indistinct in Marellia, the entire surface of the metasternum being 

 undivided in this species. 



