ANATOMY OF MARELLIA REMIPES — CARBONELL 9I 



on the terminal lobe of the egg pod exactly coincide with the triangle 

 limited on the end of the female abdomen (fig. 16 B) by the bases of 

 the cerci (Cer) and the anterior end of the excision of the subgenital 

 plate. The mentioned triangular area on the frontal surface of the 

 terminal lobe of the egg pod being somewhat excavated, it receives 

 perfectly the slightly prominent epiproct and apices of the upper 

 valvulae of the ovipositor. 



Hatching was not observed by the writer, but on two occasions, a 

 group of first instar hoppers was seen on the upper surface of a leaf, 

 and the empty egg pod found on its underside. One of these empty 

 egg pods is represented in figure i8 D, and it can be observed in it 

 that the hatching of the hoppers partially detaches an operculum-like 

 portion of the frontal surface (Op), and that the hatching hoppers, 

 on emerging from under this operculum, leave the skins of the inter- 

 mediate moult (k) trapped along its edge. Apparently the hoppers 

 undergo this intermediate moult (embryonal moult of authors) when 

 leaving the egg shell and either float to the surface and then swim to 

 the leaf, or crawl on the egg pod and around the leaf to reach its 

 upper side. 



IX. THE MALE GENITALIA 



The end of the male abdomen as seen from the outside (fig. 19) 

 is not less peculiar than the corresponding region of the female. As 

 has been already stated, the eighth abdominal tergum bears a pair of 

 spiracles in the male, while these are lacking on the same segment of 

 the female. 



The most conspicuous feature of the terminal part of the male abdo- 

 men is the ninth sternum (fig. 19, IXS), modified in this species to 

 form a large, undivided subgenital plate. There is no trace on the 

 ninth sternimi of the division into a proximal and a distal or apical 

 part, shown by other grasshoppers. The whole of the subgenital plate 

 of the male in Mar cilia is conical in shape, ending in an elongated, 

 blunt point. 



Seen from above, the end of the male abdomen (fig. 19 B) shows 

 the ninth and tenth terga (IXT, XT) deeply emarginated posteriorly. 

 In this emargination the epiproct (Eppt) and the cerci (Cer) are 

 located. The tenth tergum bears on its upper part a pair of small, 

 lobiform, dark-colored furculae (/). 



The epiproct (Eppt) is subtriangular and elongate. Its lateral 

 margins show a dark-colored indentation a little beyond the middle of 

 its length. The paraprocts (Ppt) slightly surpass the tip of the epi- 



