LOUSE FAMILY TROCHILIPHAGIDAE — CARRIKER 315 



b'. Size small. Body 2.44; head short and wide (0.55X0.65); frons 0.43. 

 Transverse frontal carina slender and composed of two narrow bands 

 not reaching to lateral margins of head; no submarginal transverse 

 carina across occipital region; carinae of prothorax and pterothorax 

 more slender; mandibles longer, less thickened; joints of lateral, abdomi- 

 nal carinae much swollen illumani 



a'. Frons very slightly concave, not transverse, with rounded sides. 



b. Area anterior to transverse carina of frons more or less uniformly colored, 



without submarginal concave line, sides of temples with strongly 



irregular margins; eye prominent. 



c. Size large, body more than 2.50 (body 2.57; head 0.60X0.67; frons 



0.46). A heavy, submarginal, strongly sinuate carina across occiput; 



extensile muscles that push forward the sucking apparatus are longer; 



head longer at temples than at occiput; pterothorax longer (0.78), 



with straight, slightly undulating sides; sucking apparatus very heavy, 



with short slender tip sauli 



c'. No submarginal occipital carina; sucking apparatus long and slender, 

 with long, slender basal prongs; propulsion sclerite also long and 

 slender; numerous short, stout, pustulated setae scattered over head, 

 pterothorax, and legs; pterothorax short (0.35X0.78) and with sides 



uniformly convex columbianus 



b'. A submarginal, concave line across frons, with area anterior to it almost 

 hyaline. Head short and wide, with shorter body (2.37); head 0.53 X 

 0.64; frons 0.42; temples strongly expanded laterally, line of margins 

 broken at prominent eye; sucking apparatus heavy basally, with 

 thickened basal prongs; propulsion sclerite short and thickened; 

 sides of pterothorax slightly concave medially .... mandibularis 



Trochiloecetes prominens (Kellogg andChapman), 1899 



Physostomum prominens Kellogg and Chapman, Occ. Pap. California Acad. Sci., 

 vol. 6, p. 137, pi. 9, fig. 5, 1899. Host: Calyple cosine (Bourcier). 



With a transverse frons and length of 2.00, this species falls in the 

 key between sections A and B, and could be included in either. 

 Placed under section A, it would go with angustifrons under a', but 

 it differs decidedly from that species in the much wider frons, the 

 sides of which are rounded, not divergent; temples moderately convex 

 laterally, occiput only slightly sinuate. I have examined the type, 

 which is almost adult, but recently molted. The authors 

 attribute the fading out of the submarginal, abdominal carinae 

 posteriorly to immaturity, but this assumption is incorrect, the 

 fading out being a universal character. 



Trochiloecetes doratophorus (Carriker), 1903 



Physostonunn doralophorum Carriker, Univ. Nebraska Studies, vol. 3, p. 165, 

 pi. 5, fig. 4, 1903. Host: Selasphorus flammula Salvin. 



There is little to be added to the original description. The frons 

 is concave; eye prominent; sides of temples strongly convex; stylet 



