268 MB. E. m'I/AChlan's betision of 



segment a large valve, on each side of which is a long straight spine dila- 

 ted towards the apex ; at the apex of the 7th ventral segment a deeply 

 bifid semitransparent valve, the produced points of which are directed 

 towards the base and opposed to the spines on the other valve; 

 between these valves is a deeply concave space; the clavate or 

 thickened portion of the terminal segment is provided with a long 

 sabre-shaped flattened yellow borei*, curved upwards. 

 Three examples, varying much in size, in the collection of the 

 British Museum. 



3. Stenosmylus (?) LONGiPENNis, Walker, vide infra. 



O. coNSPERSus, p. 234, 5=0smylus conspersus, Walker. A true 

 Osmylus. 



O. LONGIPENNIS, p. 235, 6. I place this provisionally in Stenosmylus; 

 but it is aberrant, an.d will probably eventually form a new genus. 



O. TUBERCULATUS, p. 235, 7= OsmyZws tuberculatus, Walker. Pro- 

 bably a true Osmylus. 



O. LONGicoRNis, p. 235, 8. This is a very abenrant insect, and, from 

 its setaceous antennae, it should perhaps be placed in the Chrysopides. 

 Hagen (Neurop. N. America, p. 210) places it provisionally in the 

 uncertain genus Meleoma, for want of further information. The type 

 is in bad condition, and I postpone further details on its structure. 



Genus Chetsopa, p. 236. 



C. viTTATA, p. 237, 1. Under this label are two or three small species 

 very distant from the true vittaia ; the example from Malaga may be 

 C. microcephala. 



C. coNGRUA, p. 238, 2= C. congrua. Walker. Allied to C. vulgaris, L., 

 but differs in its narrower and more pointed wings, more open neura- 

 tion, and shorter pubescence. 



C. REM OTA, p. 238, 3=C. remota, Walker. The examples from the 

 different locahties present no appreciable differences. 



C. OCEANICA, p. 238, 4=C. oceanica, Walker. Very closely allied to 

 remota, but apparently distinct. 



C. BASALis, p. 239, 5=C. basalis, Walker. 

 C CONCOLOR, p. 239, 6=C. congrua, Walker. 



C. VULGARIS, p. 239, 7. The one with the label "vulgaris" is a much 

 damaged and almost destroyed specimen, apparently C. alba ; the 

 others are vulgaris and alba. 



C. INVARIA, p. 241, 11 = C. invaria. Walker. 



C. DiviSA, p. 242, 13= C. collaris, Schneider. 



