480 PROCEEDINGS OF THE NATIONAL MUSEUM vol. los 



appears to be so pronounced only in this species; since this is at present 

 a unique specimen, the constancy of this character is unknown. 



Genus Climacia McLachlan 



CUmacia McLachlan, 1869, p. 21.— Banks, 1905, p. 26.— Navas, 1935 p. 31.— 

 Carpenter, 1940, p. 255. 



Variegated spongilla-flies. 



Genotype: Micromus areolaris Hagen, by original designation of 

 McLachlan (1869, p. 21). 



Head (figs. S,i; 9,b,d,g,h) : Antennae sometimes with as many as 71 

 segments, two whorls of setae on all but basal segment, on which the 

 setae are irregularly arranged ; face longer than in Sisyra; clypeus some- 

 times giving appearance of being lobod; labriun usually bilobed, about 

 1% times as broad as long, setose (fig. 9,d); postoccipital margin of 

 foramen convex medially, concave laterally on each side; maxillary 

 palpi with basal two segments short, fourth slightly longer, third 

 longer than first, second or fourth, fifth longest, narrow, more or less 

 cylindrical, broadest at point about thu'd of length, curved slightly 

 laterally and acute at apex, galea terminalh^ somewhat lobed, lacinia 

 broader than that of Sisyra, stipes narrower and straighter than that 

 of Sisyra (fig. 7,g); labium with postmentum and prementimi dis- 

 tinctly separated by a membrane, and anterior and posterior plates of 

 prementum also separated by a distinct membrane, anterior margin 

 of posterior plate witli median lobe, differing from Sisyra (fig. 7,h) 

 labial palpi with thh-d or terminal segment only slightly enlarged, 

 more cylindrical, apex acute, similar to but smaller than terminal 

 segment of maxillary palpi, second segment slightly longer than first; jl 

 mandibles usually with a greater number of and longer bristles along 

 both inner and apical surfaces than in Sisyra (fig. 9,g,h). 



Thorax (fig. 8,e,j,k): Pronotum larger, smoother than that of 

 Sisyra, and laterally more extended to overlap the cervicales and 

 dorsal portions of pleural sclerites; laterocervicales larger and more 

 prominent than in Sisyra, indentation {x, fig. 8,k) of posterior margin 

 of metepimeron deeper than in Sisyra, median projection of basister- 

 nite triangular; mesonotum and metanotum with scutellum narrower 

 anteriorly than in Sisyra, apical shield-shaped depression with 

 posterolateral margins shorter than in Sisyra. Legs with tarsi having 

 the first segment the longest, more than one-third the length of tarsus, 

 fom'th segment shortest. (Prothorax and neck illustrated by Cramp-' 

 ton, 1926, pi. 14, fig. 64.) 



FoREWiNG (fig. 11): Costal area with approximately 11-14 costal 

 cross-veins before the pterostigma; subcostal area moderately broad, 

 with one basal subcostal cross-vein below about the thu'd or fourth 

 costal cross-veins; Sc appearing coalesced with Rl at apex of wing 



