ANATOMY OF MARELLIA REMIPES — CARBONELL 



75 



Fig. 9.— Thoracic sterna and base of abdomen of MarcUia rcmipcs. 

 Acx, antecostal bridge of prosterniim ; Bs, basisternum ; Cx, coxa ; eP, edge of 

 pronotum ; Fm, femur ; fs, furcal suture ; pss, pleurosternal suture ; IS, first ab- 

 dominal sternum ; IIS, second abdominal sternum ; Si, prothoracic sternal plate ; 

 sa, sa, roots of sternal apophyses ; SI, sternellum ; spn, depression marking the 

 site of the internal spina ; Tn, trochantin ; Tr, trochanter. 



IV. THE WINGS AND THEIR ARTICULATIONS 



The wings of Marellia rcmipes are figured in a very schematic form 

 in figure 10. The wing venation in this insect, especially in the fore 

 wing, is rather indistinct and obscured by cross-veins, and the writer 

 is not sure of having interpreted it correctly. Wing veins in figure 10 

 have been named after Snodgrass (1929). 



As has been already indicated, there are in this species two forms 

 that differ in the degree of development of the wings. The macrop- 

 terous or long-winged form has its tegmina and hind wings fully 



