14 Transactions of the Society. 



As already stated, tbe Lonchopteridre have been transferred to 

 Group 2. 



I am rather doubtful as to the position of the Pipunculidje in 

 this section. A dissection of P. campestris Ltr. $ shows the 

 cardines of the maxillae in contact with the bases of the palpi ; 

 while the preparation of P. zonatus Ztt., from which the 1904 draw- 

 ing was made, and also two of Chalurus spurius Flu., show the 

 bases of the palpi quite away from the cardines. 



On the other hand, while P. campestris shows no suture on the 

 mentum indicative of the fusion of the mandibles on the ventral side, 

 it is very apparent in an undetermined female, in P.modcstus ^, 

 and in C. spurius $ . 



The very marked sense-organ in the annulated palpi is also 

 another Nematocerous character which makes the position of this 

 family in the Cyclorrapha doubtful. 



[u Echinomyia fera L. several Sarcophaga, Clistia marensMg., 

 Oliviera lateralis F., Prosena sybarita F., and Siphona geniadata 

 Deg., there is a chitinous process at the base of the labrum. This 

 on a cursory examination might appear to be a remnant of the 

 pump in Culcx; but a more careful inspection will show that it 

 cannot be this, as it is not in connection with the pharynx, which 

 shows as a small tube leading from the hypopharynx and passes 

 under the process in a very degenerate state compared with the 

 lirachycerous forms or with such conditions as exist in Calliphora 

 or the Cordyluridie. The process in the genera mentioned is con- 

 nected with the other chitinous parts by flexible membranes and 

 proceeds to the submentum, which is narrowed into a funnel for 

 the reception of the duct, and incloses this " pseudopharynx" within 

 its walls, where a process analogous with the pump seems to 

 exist. This is fairly clear in S. geniculata, where there appears to 

 be a valvular process inside the submentum (plate IV. fig. 58). 



In Stomoxus and Glossina a somewhat similar arrangement 

 exists, which clearly explains the degeneration of the hypopharynx 

 in these genera. 



In Stomoxys there is a strongly tracheated tube leading through 

 the submentum, which is not modified as in Siphona. 



The Anthomyid Lispc tentaculata Deg. has very large spatulate 

 palpi, one of the most curious forms in the Muscidse. The micro- 

 scopic structure, when seen with high powers, appears identical 

 with that found on the palpi of some DolichopodidaB, particularly 

 Aphrosylus raptor Hal., which also bears spatulate but not stalked 

 palpi. The labrum in Lispc is used as a sucking organ and is 

 connected with the submentum in the same manner as in Siphon", 

 but the hypopharynx is also used; it is thickened at its base and 

 pierced by the pharynx, which' is fairly well developed. The 

 strong teeth that are found on the paraglossre show the relationship 

 to the Cordylurida?, and the position of the genus in the systematic 



