18 BULLETIN 108, UNITED STATES NATIONAL MUSEUM. 



KALOTERMES OCCmENTIS Walker. 



Soldier. — Pale castaneous; abdomen paler, especially below; man- 

 dibles black; legs brownish yellow. Head very large and broad, 

 broader behind than in front, about as broad as long (nearly 5 mm.), 

 depressed in the anterior middle area; eyes distinct, black, nearly 

 twice as high as broad; ridge over base of the antennae much ele- 

 vated and roughened; labrum nearly truncate on tip; mandibles 

 stout, short, about half the length of head, toothed about as usual, 

 the two teeth toward tip of left mandible subequal; gula not half as 

 wide in middle as in front. Antennae very short, third joint nearly 

 equal to next three joints. Pronotum twice as broad as long in the 

 middle, broadest across front, very deeply, roundly emarginate in 

 front, much narrowed behind, and the posterior sides rounded into the 



hind margin; the meso and met- 

 ; j ^ anotum have distinct wing pads; 



/ legs very short, femora much 



N;p—.. \ I I ; ..^^ swollen. (Fig. 8.) 



<■ .: ••- L™J Length, 14 to 15 mm. (Descrip- 



/■■■ / i, \ '^ 



/ / \ , i /^- tion drawn from one of Walker's 



r' 7 -•~.^._J [ h--"\.... types.) 



V, ( / '""/ ^ \. / Soldiers from west coast of Mex- 



/ / I "; \ ico. Lower California, Cape San 



Y / ?■ ■•1 1 — Hi Lucas, and Angel Guardia Island, 



■ 'FTv. e : i ""'^■--\....i Gulf of California, Townsend Ex- 



^L^ wT-vr-- ■, ■ pedition. 



-)\V A 'X y^ This is the type of Holmgren's 



/\ Y V — \ C'^'A genus Pteroierm.es; it is, however, 



V \j^" /v ( a true Kalotermes in all essential 



^^^^!5^ fx characters; the presence of wing 



^^^^^^r^tj^-^-^-'-J^ pads on soldiers of Kalotermes is 



^--<-_^3^r ) not unusual. 



"^ Winged. — Light castaneous 



Fig. 7.— Distribution of Kalotermes above, pale beneath; eyes large, 



occiDENTis. much less than diameter from 



lower margin of head and only about one and a half diameter 

 from hind margin; ocelli moderately large, close to eyes. An- 

 tennae nearly as long as head, of 20 to 21 joints; first three joints 

 darker than others, third slightly longer than the second. Pronotum 

 about twice as broad as long, broadest in middle, slightly, evenly 

 concave in front, posterior sides rounded into the hind margin. Wing 

 scale very large, plainly longer than pronotum. Abdomen very 

 large and broad. Head, thorax, and wing scales with moderately 

 long, erect hair; abdomen with fine hair, and some long, erect ones 

 in transverse rows. Wings pale grayish; costal veins yellowish, 

 about twice as long as body; four branches from radial sector to 



